SECTION 22 1113 FACILITY WATER DISTRIBUTION PIPING PART … · FACILITY WATER DISTRIBUTION PIPING...

Roseville ParksCedarholm Community Building

Specifications

FACILITY WATER DISTRIBUTION PIPING 22 1113 - 1

SECTION 22 1113

FACILITY WATER DISTRIBUTION PIPING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

B. City of Roseville, Minnesota, Standard Specifications for Watermain.

1.2 SUMMARY

A. This Section includes water-distribution piping and related components outside the building for water service and fire-service mains.

1.3 DEFINITIONS

A. EPDM: Ethylene propylene diene terpolymer rubber.

B. LLDPE: Linear, low-density polyethylene plastic.

C. PA: Polyamide (nylon) plastic.

D. PE: Polyethylene plastic.

E. PP: Polypropylene plastic.

F. PVC: Polyvinyl chloride plastic.

G. RTRF: Reinforced thermosetting resin (fiberglass) fittings.

H. RTRP: Reinforced thermosetting resin (fiberglass) pipe.

1.4 ACTION SUBMITTALS

A. Product Data: For each type of product indicated.

B. Certificate of compliance from the manufacturer certifying that the following products meet the respective requirements in this specification: 1. Water Main Pipe 2. Valves 3. Thrust Restraints 4. Service Pipe 5. DIP Fittings


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C. Submit proposed method of joint conductivity.

D. Submit proposed method and type of thrust restraint.

1.5 INFORMATIONAL SUBMITTALS

A. Field quality-control test reports.

1.6 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For water valves and specialties to include in emergency, operation, and maintenance manuals.

1.7 QUALITY ASSURANCE

A. Regulatory Requirements:

1. Comply with requirements of the City of Roseville, Minnesota. Including, but not limited to, tapping of water mains and backflow prevention.

2. Comply with state plumbing code requirements. 3. No valve or other control on the existing water system shall be operated for any purpose

by the Contractor without approval of the City of Roseville. 4. Contractor will give the City and all affected residents 48 hours notice of interruption of

service and advise of the probable time service will be restored. 5. Disruption of water service to residents on public or private systems shall be the

Contractor’s responsibility. Contractor shall supply alternate means of potable water at his/her cost.

B. Piping materials shall bear label, stamp, or other markings of specified testing agency.

1.8 DELIVERY, STORAGE, AND HANDLING

A. Preparation for Transport: Prepare valves, including fire hydrants, according to the following:

1. Ensure that valves are dry and internally protected against rust and corrosion. 2. Protect valves against damage to threaded ends and flange faces. 3. Set valves in best position for handling. Set valves closed to prevent rattling.

B. During Storage: Use precautions for valves, including fire hydrants, according to the following:

1. Do not remove end protectors unless necessary for inspection; then reinstall for storage. 2. Protect from weather. Store indoors and maintain temperature higher than ambient dew-

point temperature. Support off the ground or pavement in watertight enclosures when outdoor storage is necessary.

C. Handling: Use sling to handle valves and fire hydrants if size requires handling by crane or lift. Rig valves to avoid damage to exposed parts. Do not use handwheels or stems as lifting or rigging points. Follow Section 2.2 of AWWA C600.


Specifications


D. Store products according to Section 2.2 of AWWA C600 and the following requirements.

E. Deliver piping with factory-applied end caps. Maintain end caps through shipping, storage, and handling to prevent pipe-end damage and to prevent entrance of dirt, debris, and moisture.

F. Protect stored piping from moisture and dirt. Elevate above grade. Do not exceed structural capacity of floor when storing inside.

G. Protect flanges, fittings, and specialties from moisture and dirt.

H. Store plastic piping protected from direct sunlight. Support to prevent sagging and bending.

I. Inspect all pipe and products during the unloading process.

J. Notify Engineer of any cracked, flawed or otherwise defective products.

K. Remove all products found to be defective by the Engineer from the Site.

1.9 PROJECT CONDITIONS

A. Interruption of Existing Water-Distribution Service: Do not interrupt service to facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary water-distribution service according to requirements indicated:

1. Notify Owner’s representatiove no fewer than two days in advance of proposed interruption of service.

2. Do not proceed with interruption of water-distribution service without City of Cannon Fall’s written permission.

1.10 COORDINATION

A. Coordinate connection to water main with utility company.

PART 2 - PRODUCTS

2.1 DUCTILE-IRON PIPE AND FITTINGS

A. Water main installation shall be performed in accordance with the provisions of the latest published edition of the MnDOT Standard Specifications and the City Engineers Association of Minnesota Standard Specifications, and the City of Roseville Standard Specifications.

B. Push-on-Joint, Ductile-Iron Pipe: Class 52 or higher AWWA C151, with push-on-joint bell and plain spigot end unless grooved or flanged ends are indicated conforming to the requirements of ASA A-25.51. Cement-Mortar Lining: AWWA C104. All fittings, valves, and hydrants shall be secured utilizing Cor-Blue bolts.

1. Ductile-Iron Fittings: AWWA C153, ductile-iron compact pattern. 2. Cement-Mortar Lining: AWWA C104. 3. Joints: Mechanical.


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4. Gaskets: AWWA C111, rubber.

C. JOINT CONDUCTIVITY 1. Field Application Methods:

a. Burndy – Thermoweld by Burndy Corp., Norwalk, Connecticut. b. Cadweld by Erico Products Co., Cleveland, Ohio.

2. Copper Jumpers: a. Minimum 1/16-inch by ½-inch wide flat copper strip. b. Annealed round copper wire conforming to ASTM B152, Type DHP. c. Nuts and Bolts: Silicon Bronze.

2.2 CORROSION-PROTECTION PIPING ENCASEMENT

A. Encasement for Underground Metal Piping:

1. Standards: ASTM A 674 and AWWA C105/A21.5. 2. Form: tube. 3. Material: Polyethylene film. 4. Color: Black.

2.3 GATE VALVES

A. Gate Valves:

1. Available Manufacturers: Waterous Resilient Wedge, NRS, Clow F5155. Kennedy 571X, or equal.

2. Resilient Seated: AWWA C515. 3. Working Pressure: 200 psi. 4. Ends: Mechanical Joint. 5. Operating Stem: Non-Rising with O-ring Seals. 6. Operating Nut: 2-inch Square, Open Left.

Bolting materials shall be core blue bolt with hexagonal heads and shall have the 7. mechanical strength requirements of ASTM A307.

Gate valves shall have mechanical joint valve ends. Tapping valves shall have fullsize 8. cutter diameter with tapping valve ends9. Markings to be cast on the bonnet or body:

a. Open indicating arrow. b. Manufacturer’s name. c. Pressure rating. d. Year of manufacture. e. Size.

2.4 GATE VALVE ACCESSORIES AND SPECIALTIES

A. Valve Boxes: 1. Screw type Tyler Series 6860, Star Pipe Product Series or approved equal. 2. Cast Iron, 5-1/4-inch shaft and be extendable from 48-inches to 102-inches 3. Vertical, 3 piece, Buffalo type. 4. Box length to provide for 8.0 feet of pipe cover. 5. Drop 19 lids shall be marked “WATER.”


Specifications


6. Adjustable to 6 inches up or down from standard box length. 7. Valve box parts shall be labeled and cast with raised letters identifying manufacturer,

series number, part number and country where cast. 8. Risers shall be compatible with and shall properly fit Series 6860 Valve Box Top

Sections. Risers shall accommodate standard 5¼-inch drop lids.

2.5 WATER METERS

A. Comply with the requirements of the City of Roseville.

2.6 FIRE DEPARTMENT CONNECTIONS

A. Fire Department Connections:

1. Comply with the requirements of the City of Roseville.

PART 3 - EXECUTION

3.1 EARTHWORK

A. Refer to Section 31 20 00 "Earth Moving" for excavating, trenching, and backfilling.

3.2 PIPING APPLICATIONS

A. General: Use pipe, fittings, and joining methods for piping systems according to the following applications.

B. Transition couplings and special fittings with pressure ratings at least equal to piping pressure rating may be used, unless otherwise indicated.

C. Do not use flanges or unions for underground piping.

D. Underground water-service piping NPS 4 to NPS 8 shall be the following:

1. Ductile-iron, push-on-joint pipe.

3.3 VALVE APPLICATIONS

A. General Application: Use mechanical-joint-end valves for NPS 3 and larger underground installation. Use UL/FMG, nonrising-stem gate valves for installation with indicator posts.

3.4 PIPING INSTALLATION

A. Water-Main Connection: Tap water main according to requirements of water utility company and of size and in location indicated.


Specifications


B. Make connections larger than NPS 2 with tapping machine according to the following:

1. Install tapping sleeve and tapping valve according to MSS SP-60. 2. Install tapping sleeve on pipe to be tapped. Position flanged outlet for gate valve. 3. Use tapping machine compatible with valve and tapping sleeve; cut hole in main.

Remove tapping machine and connect water-service piping. 4. Install gate valve onto tapping sleeve. Comply with MSS SP-60. Install valve with stem

pointing up and with valve box.

C. Install ductile-iron, water-service piping according to AWWA C600 and AWWA M41.

1. Install PE corrosion-protection encasement according to ASTM A 674 or AWWA C105.

D. Bury piping with depth of cover over top at least 8.0 feet unless indicated otherwise.

E. Extend water-service piping and connect to water-supply source and building-water-piping systems at outside face of building wall in locations and pipe sizes indicated.

1. Terminate water-service piping at building wall until building-water-piping systems are installed. Terminate piping with caps, plugs, or flanges as required for piping material. Make connections to building-water-piping systems when those systems are installed.

F. Install underground piping with restrained joints at horizontal and vertical changes in direction. Use restrained-joint piping, thrust blocks, anchors, tie-rods and clamps, and other supports.

G. See Section 221116 "Domestic Water Piping" for potable-water piping inside the building.

3.5 JOINT CONSTRUCTION

A. Make pipe joints according to the following: 1. Ductile-Iron Piping, Gasketed Joints for Water-Service Piping: AWWA C600 and

AWWA M41.

3.6 ANCHORAGE INSTALLATION

A. Anchorage, General: Install water-distribution piping with restrained joints. Anchorages and restrained-joint types that may be used include the following:

1. Concrete thrust blocks. 2. Locking mechanical joints. 3. Set-screw mechanical retainer glands. 4. Bolted flanged joints. 5. Pipe clamps and tie rods.

B. Install anchorages for tees, plugs and caps, bends, crosses, valves, and hydrant branches. Include anchorages for the following piping systems:

1. Gasketed-Joint, Ductile-Iron, Water-Service Piping: According to AWWA C600.

C. Apply full coat of asphalt or other acceptable corrosion-resistant material to surfaces of installed ferrous anchorage devices.


Specifications


3.7 VALVE INSTALLATION

A. Verify that subgrade material is adequate to support valve assembly.

B. Install valves with stems vertical and plumb.

C. Install boxes plumb and center over the valve nut.

D. Verify that box remains plumb and centered during backfill.

E. Adjust box cover to required grade.

3.8 HYDRANT INSTALLATION

A. Verify that subgrade material is adequate to support hydrant.

B. Place thrust block, crushed rock and tar paper in accordance with Drawing details.

C. Install and maintain hydrant in a plumb position.

D. Where groundwater is present, plug drain hole and affix “Pump After Use” tag to hydrant.

3.9 JOINT CONDUCTIVITY

A. Provide electrical bond across all joints between pipes and appurtenances.

B. Install copper jumpers by either shop or field applications.

C. Fasten multiple jumper strips with silicon bronze bolts and nuts.

D. Welding: 1. Grind surfaces to be welded to remove coating and oxide and to provide clean metal

surface. 2. Use metallic-arc process for shop applications. 3. Use exothermic process for field applications. 4. Refinish welded area with protective coating after connection is made.

3.10 THRUST RESTRAINT

A. Install thrust restraints at all bends, tees, and plugs.

B. Concrete blocking: 1. Place between the fitting and undisturbed trench wall. 2. Minimum thickness: 12 inches. 3. Minimum area in square feet shall be in accordance with the following:

Pipe Tee or Plug ¼ Bend 1/32 & 1/8 Bend 1/16 Bend 6-inch 2.9 3.1 1.6 0.8 8-inch 3.7 5.3 2.9 1.4 10-inch 5.7 8.1 4.4 2.2 12-inch 8.1 13.4 6.6 3.2


Specifications


16-inch 15.1 21.4 11.6 5.9 20-inch 23.2 30.2 18.1 9.3 24-inch 33.6 48.5 26.1 13.3

4. Size blocking based on the larger main. 5. Verify that bolts are accessible after concrete is poured.

C. Timber Blocking: 1. Use for temporary blocking only for maximum 8-inch mains. 2. Minimum timber size: 4-inch by 4-inch.

D. Restrained Joints: 1. Submit method and type to City Engineer for approval. 2. Install in accordance with “Thrust Restraint Design for Ductile Iron Pipe”.

3.11 WATER METER INSTALLATION

A. Comply with the requirements of the City of Roseville.

3.12 CONNECTIONS

A. Connect water-distribution piping to utility water main in accordance with City of Roseville requirements.

B. Connect water-distribution piping to interior domestic water and fire-suppression piping.

3.13 FIELD QUALITY CONTROL

A. Perform the following tests upon completion of the system and prior to being placed into service: 1. Hydrostatic Pressure Test:

a. Perform test per City of Roseville requirements. 2. Disinfection:

a. Perform per City of Roseville requirements. 3. Electrical Conductivity Test:

a. Perform electrical conductivity test per City of Roseville requirements.

B. Prepare reports of testing activities.

END OF SECTION


Specifications

FACILITY SANITARY SEWERS 22 1313 - 1

SECTION 221313

FACILITY SANITARY SEWERS

PART 1 - GENERAL



B. City of Roseville Standard Specifications.

1.2 SUMMARY

A. Section Includes:

1. Pipe and fittings. 2. Cleanouts. 3. Televising of Sewer Lines


A. Product Certificates: For each type of pipe and fitting, from manufacturer.

B. Field quality-control reports.


A. Do not store plastic manholes, pipe, and fittings in direct sunlight.

B. Protect pipe, pipe fittings, and seals from dirt and damage.


A. Interruption of Existing Sanitary Sewerage Service: Do not interrupt service to facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary service according to requirements indicated:

1. Notify City, Engineer and Owner no fewer than two days in advance of proposed interruption of service.

2. Do not proceed with interruption of service without Owner's written permission.


Specifications


PART 2 - PRODUCTS

2.1 PVC PIPE AND FITTINGS

A. PVC Schedule 40 Sewer Piping:

1. Pipe: PVC Schedule 40 per City of Roseville standards. 2. Pipe and fittings must be laid on a continuous granular bed. Installation must comply with

ASTM D2321.

2.2 CLEANOUTS

A. PVC Cleanouts:

1. Description: PVC body with PVC threaded plug. Include PVC sewer pipe fitting and riser to cleanout of same material as sewer piping.

PART 3 - EXECUTION

3.1 EARTHWORK

A. Excavating, trenching, and backfilling are specified in Section 312000 "Earth Moving."


A. General Locations and Arrangements: Drawing plans and details indicate general location and arrangement of underground sanitary sewer piping. Location and arrangement of piping layout take into account design considerations. Install piping as indicated, to extent practical. Where specific installation is not indicated, follow piping manufacturer's written instructions.

B. Install piping beginning at low point, true to grades and alignment indicated with unbroken continuity of invert. Place bell ends of piping facing upstream. Install gaskets, seals, sleeves, and couplings according to manufacturer's written instructions for using lubricants, cements, and other installation requirements.

C. Install manholes for changes in direction unless fittings are indicated. Use fittings for branch connections unless direct tap into existing sewer is indicated.

D. Install gravity-flow, nonpressure, drainage piping according to the following:

1. Install piping pitched down in direction of flow, at minimum slope of 1 percent unless otherwise indicated.

E. Clear interior of piping and manholes of dirt and superfluous material as work progresses. Maintain swab or drag in piping, and pull past each joint as it is completed. Place plug in end of incomplete piping at end of day and when work stops.


Specifications


3.3 PIPE JOINT CONSTRUCTION

A. Join gravity-flow, nonpressure, drainage piping according to the following:

1. Join according to City of Roseville requirements.

3.4 CLEANOUT INSTALLATION

A. Install cleanouts and riser extensions from sewer pipes to cleanouts at grade. Install piping so cleanouts open in direction of flow in sewer pipe.

1. Use Light-Duty, top-loading classification cleanouts in earth or unpaved foot-traffic areas. 2. Use Medium-Duty, top-loading classification cleanouts in paved foot-traffic areas.

B. Set cleanout frames and covers in earth in cast-in-place-concrete block, 18 by 18 by 12 inches deep. Set with tops 1 inch above surrounding grade.

C. Set cleanout frames and covers in concrete pavement and roads with tops flush with pavement surface.

3.5 CONNECTIONS

A. Connect nonpressure, gravity-flow drainage piping to building's sanitary building drains specified in Section 221316 "Sanitary Waste and Vent Piping."

B. Make connections to existing piping and underground manholes according to City of Roseville requirements.

3.6 IDENTIFICATION

A. Comply with requirements in Section 31200 "Earth Moving" for underground utility identification devices. Arrange for installation of green warning tapes directly over piping and at outside edges of underground manholes.

1. Use tracer wire and warning tape over nonferrous piping and over edges of underground manholes in accordance with the City of Roseville standards.


A. Inspect interior of piping to determine whether line displacement or other damage has occurred. Inspect after approximately 24 inches of backfill is in place, and again at completion of Project.

1. Submit separate report for each system inspection. 2. Defects requiring correction include the following:

a. Alignment: Less than full diameter of inside of pipe is visible between structures. b. Deflection: Flexible piping with deflection that prevents passage of ball or cylinder

of size not less than 92.5 percent of piping diameter. c. Damage: Crushed, broken, cracked, or otherwise damaged piping. d. Infiltration: Water leakage into piping.


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e. Exfiltration: Water leakage from or around piping.

3. Replace defective piping using new materials, and repeat inspections until defects are within allowances specified.

4. Reinspect and repeat procedure until results are satisfactory.

B. Test new piping systems, and parts of existing systems that have been altered, extended, or repaired, for leaks and defects.

1. Do not enclose, cover, or put into service before inspection and approval. 2. Test completed piping systems according to requirements of authorities having

jurisdiction.3. Schedule tests and inspections by authorities having jurisdiction with at least 24 hours'

advance notice. 4. Submit separate report for each test. 5. Air Tests: Test sanitary sewerage according to requirements of authorities having

jurisdiction, UNI-B-6, and the following:

a. Option: Test plastic gravity sewer piping according to ASTM F 1417.

C. Leaks and loss in test pressure constitute defects that must be repaired.

D. Replace leaking piping using new materials, and repeat testing until leakage is within allowances specified.

E. If required by the City of Roseville, televise newly constructed sewer lines in accordance with the City’s standards.

3.8 CLEANING

A. Clean dirt and superfluous material from interior of piping.

END OF SECTION 22 1313


Specifications

SITE CLEARING 31 1000-1

SECTION 31 1000

SITE CLEARING

PART 1 - GENERAL



1.02 SUMMARY


1. Protecting existing vegetation to remain. 2. Removing existing vegetation. 3. Clearing and grubbing. 4. Stripping and stockpiling topsoil. 5. Removing above- and below-grade site improvements. 6. Temporary erosion- and sedimentation-control measures.

B. Related Sections:

1. Division 01 Section "Temporary Facilities and Controls" for temporary utility services, construction and support facilities, security and protection facilities.

2. Division 01 Section "Execution" for field engineering and surveying.

1.03 DEFINITIONS

A. Subsoil: All soil beneath the topsoil layer of the soil profile, and typified by the lack of organic matter and soil organisms.

B. Surface Soil: Soil that is present at the top layer of the existing soil profile at the Project site. In undisturbed areas, the surface soil is typically topsoil; but in disturbed areas such as urban environments, the surface soil can be subsoil.

C. Topsoil: Top layer of the soil profile consisting of existing native surface topsoil or existing in-place surface soil and is the zone where plant roots grow. Its appearance is generally friable, pervious, and black or a darker shade of brown, gray, or red than underlying subsoil; reasonably free of subsoil, clay lumps, gravel, and other objects more than 2 inches in diameter; and free of subsoil and weeds, roots, toxic materials, or other nonsoil materials.

D. Plant-Protection Zone: Area surrounding individual trees, groups of trees, shrubs, or other vegetation to be protected during construction, and indicated on Drawings.

E. Tree-Protection Zone: Area surrounding individual trees or groups of trees to be protected during construction, and indicated on Drawings or defined by a circle concentric with each tree with a radius 1.5 times the diameter of the drip line unless otherwise indicated.


Specifications


F. Vegetation: Trees, shrubs, groundcovers, grass, and other plants.

1.04 MATERIAL OWNERSHIP

A. Except for stripped topsoil and other materials indicated to be stockpiled or otherwise remain Owner's property, cleared materials shall become Contractor's property and shall be removed from Project site.

1.05 SUBMITTALS

A. Existing Conditions: Documentation of existing trees and plantings, adjoining construction, and site improvements that establishes preconstruction conditions that might be misconstrued as damage caused by site clearing.

1. Use sufficiently detailed photographs or videotape. 2. Include plans and notations to indicate specific wounds and damage conditions of each

tree or other plants designated to remain.

B. Record Drawings: Identifying and accurately showing locations of capped utilities and other subsurface structural, electrical, and mechanical conditions.


A. Traffic: Minimize interference with adjoining roads, streets, walks, and other adjacent occupied or used facilities during site-clearing operations.

1. Do not close or obstruct streets, walks, or other adjacent occupied or used facilities without permission from Owner and authorities having jurisdiction.

2. Provide alternate routes around closed or obstructed traffic ways if required by Owner or authorities having jurisdiction.

B. Utility Locator Service: Notify Gopher State One Call for area where Project is located before site clearing.

C. Hire a private utility locator service to locate any private utilities that may be located within the construction area before site clearing.

D. Do not commence site clearing operations until temporary erosion- and sedimentation-control and plant-protection measures are in place.

E. The following practices are prohibited within protection zones:

1. Storage of construction materials, debris, or excavated material. 2. Parking vehicles or equipment. 3. Foot traffic. 4. Erection of sheds or structures. 5. Impoundment of water. 6. Excavation or other digging unless otherwise indicated. 7. Attachment of signs to or wrapping materials around trees or plants unless otherwise

indicated.


Specifications


F. Do not direct vehicle or equipment exhaust towards protection zones.

G. Prohibit heat sources, flames, ignition sources, and smoking within or near protection zones.

H. Soil Stripping, Handling, and Stockpiling: Perform only when the topsoil is dry or slightly moist.

PART 2 - PRODUCTS

2.01 MATERIALS

A. Satisfactory Soil Material: Requirements for satisfactory soil material are specified in Division 31 Section "Earth Moving."

1. Obtain approved borrow soil material off-site when satisfactory soil material is not available on-site.

PART 3 - EXECUTION

3.01 PREPARATION

A. Protect and maintain benchmarks and survey control points from disturbance during construction.

B. Locate and clearly identify trees, shrubs, and other vegetation to remain. Flag each tree trunk at 54 inches above the ground.

C. Protect existing site improvements to remain from damage during construction.

1. Restore damaged improvements to their original condition, as acceptable to Owner.

3.02 TEMPORARY EROSION AND SEDIMENTATION CONTROL

A. Provide temporary erosion- and sedimentation-control measures to prevent soil erosion and discharge of soil-bearing water runoff or airborne dust to adjacent properties and walkways, according to erosion- and sedimentation-control Drawings and requirements of authorities having jurisdiction.

B. The Contractor shall provide a MNDOT certified Erosion Control Supervisor.

C. Verify that flows of water redirected from construction areas or generated by construction activity do not enter or cross protection zones.

D. Inspect, maintain, and repair erosion- and sedimentation-control measures during construction until permanent vegetation has been established.

E. Comply with all requirements of the project specific Storm Water Pollution Prevention Plan.

F. By submitting a bid, Contractor agrees to become a co-permittee on the Minnesota Pollution Control Agency NPDES permit and agrees to comply with all requirements of the permit.


Specifications


G. By submitting a bid, the Contractor agrees to pay any fines assessed to the Owner by the MPCA arising from the Contractor not complying with the requirements of the NPDES permit and/or the project specific Storm Water Pollution Prevention Plan.

H. Remove erosion and sedimentation controls and restore and stabilize areas disturbed during removal.

3.03 TREE AND PLANT PROTECTION

A. Repair or replace trees, shrubs, and other vegetation indicated to remain or be relocated that are damaged by construction operations, in a manner approved by Architect.

3.04 EXISTING UTILITIES

A. Locate, identify, disconnect, and seal or cap utilities indicated to be removed or abandoned in place.

1. Arrange with utility companies to shut off indicated utilities.

B. Interrupting Existing Utilities: Do not interrupt utilities serving facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary utility services according to requirements indicated:

1. Notify Architect not less than two days in advance of proposed utility interruptions. 2. Do not proceed with utility interruptions without Architect's written permission.

C. Excavate for and remove underground utilities indicated to be removed.

D. Coordinate any private or public utility relocations to be performed by the utility owner and required for construction of the project.

3.05 CLEARING AND GRUBBING

A. Remove obstructions, trees, shrubs, and other vegetation to permit installation of new construction.

1. Do not remove trees, shrubs, and other vegetation specifically indicated to remain or to be relocated.

2. Grind down stumps and remove roots, obstructions, and debris to a depth of 18 inches below exposed subgrade.

3. Use only hand methods for grubbing within protection zones. 4. Chip removed tree branches and dispose of off-site.

B. Fill depressions caused by clearing and grubbing operations with satisfactory soil material unless further excavation or earthwork is indicated.

1. Place fill material in horizontal layers not exceeding a loose depth of 8 inches, and compact each layer to a density equal to adjacent original ground.


Specifications


3.06 TOPSOIL STRIPPING

A. Remove sod and grass before stripping topsoil.

B. Strip topsoil in a manner to prevent intermingling with underlying subsoil or other waste materials.

1. Remove subsoil and nonsoil materials from topsoil, including clay lumps, gravel, and other objects more than 2 inches in diameter; trash, debris, weeds, roots, and other waste materials.

C. Stockpile topsoil away from edge of excavations without intermixing with subsoil. Grade and shape stockpiles to drain surface water. Cover to prevent windblown dust and erosion by water.

1. Limit height of topsoil stockpiles to 10 feet. 2. Do not stockpile topsoil within protection zones. 3. Dispose of surplus topsoil off site. Surplus topsoil is that which exceeds quantity to be

reused. 4. Stabilize stockpiles utilizing Rapid Stabilization Method 2 (Mn/DOT Type 1 mulch and

Mn/DOT Type 5 soil stabilizer).

3.07 SITE IMPROVEMENTS

A. Remove existing above- and below-grade improvements as indicated and necessary to facilitate new construction.

B. Remove slabs, paving, curbs, gutters, and aggregate base as indicated.

1. Unless existing full-depth joints coincide with line of demolition, neatly saw-cut along line of existing pavement to remain before removing adjacent existing pavement. Saw-cut faces vertically. Saw-cutting shall be considered incidental to the removal of pavement.

2. Paint cut ends of steel reinforcement in concrete to remain with two coats of antirust coating, following coating manufacturer's written instructions. Keep paint off surfaces that will remain exposed.

3.08 DISPOSAL OF SURPLUS AND WASTE MATERIALS

A. Remove surplus soil material, unsuitable topsoil, obstructions, demolished materials, and waste materials including trash and debris, and legally dispose of them off Owner's property.

B. Separate recyclable materials produced during site clearing from other non-recyclable materials. Store or stockpile without intermixing with other materials and transport them to recycling facilities. Do not interfere with other Project work.

END OF SECTION


Specifications

EARTH MOVING 31 2000-1

SECTION 31 2000

EARTH MOVING

PART 1 - GENERAL



1.02 SUMMARY


1. Preparing subgrades for slabs-on-grade, walks, pavements, and turf. 2. Drainage course for concrete slabs-on-grade. 3. Subbase course for concrete walks and pavements. 4. Subbase course and base course for asphalt paving.


1. Division 01 Section "Construction Progress Documentation" for recording preexcavation and earth moving progress.

2. Division 01 Section "Temporary Facilities and Controls" for temporary controls, utilities, and support facilities; also for temporary site fencing if not in another Section.

3. Division 03 Section "Cast-in-Place Concrete" for granular course if placed over vapor retarder and beneath the slab-on-grade.

4. Divisions 21, 22, 23, 26, 27, 28, and 33 Sections for installing underground mechanical and electrical utilities and buried mechanical and electrical structures.

5. Division 31 Section "Site Clearing" for site stripping, grubbing, stripping and stockpiling topsoil, and removal of above- and below-grade improvements and utilities.

6. Division 31 Section "Excavation Support and Protection" for shoring, bracing, and sheet piling of excavations.

7. Division 32 Section "Turf and Grasses" for finish grading in turf and grass areas, including preparing and placing planting soil for turf areas.

8. Division 32 Section "Plants" for finish grading in planting areas and tree and shrub pit excavation and planting.

9. Division 33 Section "Subdrainage" for drainage of pavements and landscaped areas.

1.03 DEFINITIONS

A. Backfill: Soil material or controlled low-strength material used to fill an excavation.

1. Initial Backfill: Backfill placed beside and over pipe in a trench, including haunches to support sides of pipe.

2. Final Backfill: Backfill placed over initial backfill to fill a trench.

B. Base Course: Aggregate layer placed between the subbase course and hot-mix asphalt paving.


Specifications


C. Bedding Course: Aggregate layer placed over the excavated subgrade in a trench before laying pipe.

D. Borrow Soil: Satisfactory soil imported from off-site for use as fill or backfill.

E. Drainage Course: Aggregate layer supporting the slab-on-grade that also minimizes upward capillary flow of pore water.

F. Excavation: Removal of material encountered above subgrade elevations and to lines and dimensions indicated.

1. Authorized Additional Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions as directed by Architect. Authorized additional excavation and replacement material will be paid for according to Contract provisions for changes in the Work.

2. Bulk Excavation: Excavation more than 10 feet in width and more than 30 feet in length. 3. Unauthorized Excavation: Excavation below subgrade elevations or beyond indicated

lines and dimensions without direction by Architect. Unauthorized excavation, as well as remedial work directed by Architect, shall be without additional compensation.

G. Fill: Soil materials used to raise existing grades.

H. Rock: Rock material in beds, ledges, unstratified masses, conglomerate deposits, and boulders of rock material 3/4 cu. yd. or more in volume that exceed a standard penetration resistance of 100 blows/2 inches when tested by a geotechnical testing agency, according to ASTM D 1586.

I. Structures: Buildings, footings, foundations, retaining walls, slabs, tanks, curbs, mechanical and electrical appurtenances, or other man-made stationary features constructed above or below the ground surface.

J. Subbase Course: Aggregate layer placed between the subgrade and base course for hot-mix asphalt pavement, or aggregate layer placed between the subgrade and a cement concrete pavement or a cement concrete or hot-mix asphalt walk.

K. Subgrade: Uppermost surface of an excavation or the top surface of a fill or backfill immediately below subbase, drainage fill, drainage course, or topsoil materials.

L. Utilities: On-site underground pipes, conduits, ducts, and cables, as well as underground services within buildings.

M. Topsoil Borrow: Soil to be placed in turf and planting areas.

1.04 SUBMITTALS

A. Product Data: For each type of the following manufactured products required:

1. Geotextiles. 2. Controlled low-strength material, including design mixture.

B. Samples for Verification: For the following products, in sizes indicated below:

1. Geotextile: 12 by 12 inches.


Specifications


C. Qualification Data: For qualified testing agency.

D. Material Test Reports: For each on-site and borrow soil material proposed for fill and backfill as follows:

1. Classification according to ASTM D 2487. 2. Laboratory compaction curve according to ASTM D 698.

E. Preexcavation Photographs or Videotape: Show existing conditions of adjoining construction and site improvements, including finish surfaces, that might be misconstrued as damage caused by earth moving operations. Submit before earth moving begins.


A. Geotechnical Testing Agency Qualifications: Qualified according to ASTM E 329 and ASTM D 3740 for testing indicated.


A. Traffic: Minimize interference with adjoining roads, streets, walks, and other adjacent occupied or used facilities during earth moving operations.

1. Do not close or obstruct streets, walks, or other adjacent occupied or used facilities without permission from Owner and authorities having jurisdiction.

2. Provide alternate routes around closed or obstructed traffic ways if required by Owner or authorities having jurisdiction.

B. Utility Locator Service: Notify Gopher State One Call for area where Project is located before beginning earth moving operations.

C. Do not commence earth moving operations until temporary erosion- and sedimentation-control measures are in place.

D. Do not commence earth moving operations until plant protection measures are in place.

E. The following practices are prohibited within plant protection zones:

1. Storage of construction materials, debris, or excavated material. 2. Parking vehicles or equipment. 3. Foot traffic. 4. Erection of sheds or structures. 5. Impoundment of water. 6. Excavation or other digging unless otherwise indicated. 7. Attachment of signs to or wrapping materials around trees or plants unless otherwise

indicated.

F. Do not direct vehicle or equipment exhaust towards protection zones.

G. Prohibit heat sources, flames, ignition sources, and smoking within or near protection zones.


Specifications


PART 2 - PRODUCTS

2.01 SOIL MATERIALS

A. General: Provide borrow soil materials when sufficient satisfactory soil materials are not available from excavations.

B. Satisfactory Soils: Soil Classification Groups GW, GP, GM, SW, SP, and SM according to ASTM D 2487, or a combination of these groups; free of rock or gravel larger than 3 inches in any dimension, debris, waste, frozen materials, vegetation, and other deleterious matter.

C. Unsatisfactory Soils: Soil Classification Groups GC, SC, CL, ML, OL, CH, MH, OH, and PT according to ASTM D 2487, or a combination of these groups.

1. Unsatisfactory soils also include satisfactory soils not maintained within 1 percent below to 3 percent above optimum moisture content at time of compaction.

D. Subbase Material: Mn/DOT Select Granular Borrow per Standard Specifications for Construction, Section 3149.2B2.

E. Base Course: Mn/DOT Specification 3138, Class 5.

F. Engineered Fill: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; with at least 90 percent passing a 1-1/2-inch sieve and not more than 12 percent passing a No. 200 sieve.

G. Bedding Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; except with 100 percent passing a 1-inch sieve and not more than 8 percent passing a No. 200 sieve.

H. Drainage Course: Narrowly graded mixture of crushed stone, or crushed or uncrushed gravel; ASTM D 448; coarse-aggregate grading Size 57; with 100 percent passing a 1-1/2-inch sieve and 0 to 5 percent passing a No. 8 sieve.

I. Filter Material: Narrowly graded mixture of natural or crushed gravel, or crushed stone and natural sand; ASTM D 448; coarse-aggregate grading Size 67; with 100 percent passing a 1-inch sieve and 0 to 5 percent passing a No. 4 sieve.

J. Sand: ASTM C 33; fine aggregate.

K. Impervious Fill: Clayey gravel and sand mixture capable of compacting to a dense state.

L. Non Frost-Susceptible Backfill: Select granular borrow (MNDOT Specification 3149.2B2) modified to contain no more than 8 percent of the particles by weight passing a #200 sieve.

2.02 GEOTEXTILES

A. Subsurface Drainage Geotextile: Mn/DOT standard specification section 3733, Type I.

B. Separation Geotextile: Mn/DOT standard specification section 3733, Type V.


Specifications


PART 3 - EXECUTION

3.01 PREPARATION

A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by earth moving operations.

B. Protect and maintain erosion and sedimentation controls during earth moving operations.

C. Protect subgrades and foundation soils from freezing temperatures and frost. Remove temporary protection before placing subsequent materials.

3.02 DEWATERING

A. Prevent surface water and ground water from entering excavations, from ponding on prepared subgrades, and from flooding Project site and surrounding area.

B. Protect subgrades from softening, undermining, washout, and damage by rain or water accumulation.

1. Reroute surface water runoff away from excavated areas. Do not allow water to accumulate in excavations. Do not use excavated trenches as temporary drainage ditches.

3.03 EXPLOSIVES

A. Explosives: Do not use explosives.

3.04 EXCAVATION, GENERAL

A. Unclassified Excavation: Excavate to subgrade elevations regardless of the character of surface and subsurface conditions encountered. Unclassified excavated materials may include rock, soil materials, and obstructions. No changes in the Contract Sum or the Contract Time will be authorized for rock excavation or removal of obstructions.

1. If excavated materials intended for fill and backfill include unsatisfactory soil materials and rock, replace with satisfactory soil materials.

3.05 EXCAVATION FOR STRUCTURES

A. Review the project Geotechnical Evaluation Report and comply with recommendations for subgrade corrections and over excavations beneath the proposed building. Excavate to indicated elevations and dimensions within a tolerance of plus or minus 1 inch and provide subgrade corrections and over-excavations as necessary. Extend excavations a sufficient distance from structures for placing and removing concrete formwork, for installing services and other construction, and for inspections.


Specifications


1. Excavations for Footings and Foundations: Do not disturb bottom of excavation. Excavate by hand to final grade just before placing concrete reinforcement. Trim bottoms to required lines and grades to leave solid base to receive other work.

2. Excavation for Underground Tanks, Basins, and Mechanical or Electrical Utility Structures: Excavate to elevations and dimensions indicated within a tolerance of plus or minus 1 inch. Do not disturb bottom of excavations intended as bearing surfaces.

B. Remove all topsoil, pavement and existing fill from below the proposed building. See the project Geotechnical Evaluation Report for recommended depths of unsuitable materials to be removed.

C. Oversize (widen) excavations for the proposed building 1 foot horizontally beyond the outer edges of the building perimeter footings for each foot the excavations extend below the bottom-of-footing elevations.

D. Excavations at Edges of Tree- and Plant-Protection Zones:

1. Excavate by hand to indicated lines, cross sections, elevations, and subgrades. Use narrow-tine spading forks to comb soil and expose roots. Do not break, tear, or chop exposed roots. Do not use mechanical equipment that rips, tears, or pulls roots.

2. Cut and protect roots according to requirements in Division 01 Section "Temporary Tree and Plant Protection."

3.06 FOR WALKS AND PAVEMENTS

A. Remove topsoil, organic existing fill, buried topsoil and alluvial clays present within 3 feet of pavement subgrade elevations from beneath proposed pavements. Excavate surfaces under walks and pavements to indicated lines, cross sections, elevations, and subgrades where the above mentioned soil materials are not present.

3.07 EXCAVATION FOR UTILITY TRENCHES

A. Excavate trenches to indicated gradients, lines, depths, and elevations.

B. Excavate trenches to uniform widths to provide the following clearance on each side of pipe or conduit. Excavate trench walls vertically from trench bottom to 12 inches higher than top of pipe or conduit, unless otherwise noted.

1. Clearance: 12 inches each side of pipe or conduit.

C. Trench Bottoms: Excavate trenches 4 inches deeper than bottom of pipe elevation to allow for bedding course. Hand excavate for bell of pipe.

1. Excavate trenches 6 inches deeper than elevation required in rock or other unyielding bearing material to allow for bedding course.

3.08 SUBGRADE INSPECTION

A. Notify Architect when excavations have reached required subgrade.


Specifications


B. If Architect determines that unsatisfactory soil is present, continue excavation and replace with compacted backfill or fill material as directed.

C. Prepare subgrade per the requirements of Mn/DOT 2112.3.

D. Reconstruct subgrades damaged by freezing temperatures, frost, rain, accumulated water, or construction activities, as directed by Architect, without additional compensation.

3.09 UNAUTHORIZED EXCAVATION

A. Fill unauthorized excavation under foundations or wall footings by extending bottom elevation of concrete foundation or footing to excavation bottom, without altering top elevation. Lean concrete fill, with 28-day compressive strength of 2500 psi, may be used when approved by Architect.

1. Fill unauthorized excavations under other construction, pipe, or conduit as directed by Architect.

3.010 STORAGE OF SOIL MATERIALS

A. Stockpile borrow soil materials and excavated satisfactory soil materials without intermixing. Place, grade, and shape stockpiles to drain surface water. Cover to prevent windblown dust.

1. Stockpile soil materials away from edge of excavations. Do not store within drip line of remaining trees.

3.011 BACKFILL

A. Place and compact backfill in excavations promptly, but not before completing the following:

1. Construction below finish grade including, where applicable, subdrainage, dampproofing, waterproofing, and perimeter insulation.

2. Surveying locations of underground utilities for Record Documents. 3. Testing and inspecting underground utilities. 4. Removing concrete formwork. 5. Removing trash and debris. 6. Removing temporary shoring and bracing, and sheeting. 7. Installing permanent or temporary horizontal bracing on horizontally supported walls.

B. On-site soils free of organic soil and debris, classifying as sandy lean clay, silty sand, poorly graded sand and poorly graded sand with silt can be considered for reuse as backfill and fill. The sandy lean clay and silty sand, however, being fine-grained, will be more difficult to compact if wet or allowed to become wet, or if spread and compacted over wet surfaces.

C. Silt, organic silt and clay, and lean clay with sand should only be placed in non-structural green spaces or hauled from the site.

D. Place backfill on subgrades free of mud, frost, snow, or ice.


Specifications


3.012 SOIL FILL

A. Plow, scarify, bench, or break up sloped surfaces steeper than 1 vertical to 4 horizontal so fill material will bond with existing material.

B. Scarify, blend, moisture condition and recompact the upper 8 inches of exposed materials prior to placing required additional fill in paved areas.

C. Place and compact fill material in layers to required elevations as follows:

1. Under grass and planted areas, use satisfactory soil material. 2. Under walks and pavements, use satisfactory soil material.

D. Place soil fill on subgrades free of mud, frost, snow, or ice.

3.013 SOIL MOISTURE CONTROL

A. Uniformly moisten or aerate subgrade and each subsequent fill or backfill soil layer before compaction to within 1 percent below to 3 percent above optimum moisture content.

1. Do not place backfill or fill soil material on surfaces that are muddy, frozen, or contain frost or ice.

2. Remove and replace, or scarify and air dry, otherwise satisfactory soil material that exceeds optimum moisture content by 3 percent and is too wet to compact to specified dry unit weight.

3.014 COMPACTION OF SOIL BACKFILLS AND FILLS

A. Place backfill and fill soil materials in layers not more than 4 inches in loose depth for material.

B. Place backfill and fill soil materials evenly on all sides of structures to required elevations, and uniformly along the full length of each structure.

C. Compact soil materials to not less than the following percentages of maximum dry unit weight according to ASTM D 698:

1. Under structures, building slabs and steps scarify and recompact top 8 inches of existing subgrade and each layer of backfill or fill soil material at 98 percent.

2. Under walkways, scarify and recompact top 6 inches below subgrade and compact each layer of backfill or fill soil material at 95 percent.

3. Under turf or unpaved areas, scarify and recompact top 6 inches below subgrade and compact each layer of backfill or fill soil material at 90 percent.

4. For utility trenches in non-paved areas, compact each layer of initial and final backfill soil material at 90 percent.

5. Pavement areas – more than 3 feet below subgrade elevations, scarify and recompact top 8 inches of existing subgrade and each layer of backfill or fill soil material at 95 percent.

6. Pavement areas – at or within 3 feet of pavement subgrade elevations, scarify and recompact top 8 inches of existing subgrade and each layer of backfill or fill soil material at 100 percent


Specifications


3.015 GRADING

A. General: Uniformly grade areas to a smooth surface, free of irregular surface changes. Comply with compaction requirements and grade to cross sections, lines, and elevations indicated.

1. Provide a smooth transition between adjacent existing grades and new grades. 2. Cut out soft spots, fill low spots, and trim high spots to comply with required surface

tolerances.

B. Site Rough Grading: Slope grades to direct water away from buildings and to prevent ponding. Finish subgrades to required elevations within the following tolerances:

1. Turf or Unpaved Areas: Plus or minus 1 inch. 2. Walks: Plus or minus 1 inch. 3. Pavements: Plus or minus 1/2 inch.

C. Grading inside Building Lines: Finish subgrade to a tolerance of 1/2 inch when tested with a 10-foot straightedge.

3.016 SUBBASE AND BASE COURSES UNDER PAVEMENTS AND WALKS

A. Place subbase course and base course on subgrades free of mud, frost, snow, or ice.

B. On prepared subgrade, place subbase course and base course under pavements and walks as follows:

1. Place base course material over subbase course under hot-mix asphalt pavement. The base course shall be constructed in accordance with the provisions of Mn/DOT 2211, except as modified below:

2. Aggregate base material shall be compacted in accordance with the Specified Density Method as outlined in Mn/DOT Section 2211.3C1. Testing will be required in accordance with these specifications.

3. Shape subbase course and base course to required crown elevations and cross-slope grades.

4. Place subbase course and base course 6 inches or less in compacted thickness in a single layer.

5. Place subbase course and base course that exceeds 6 inches in compacted thickness in layers of equal thickness, with no compacted layer more than 6 inches thick or less than 3 inches thick.

6. Compact subbase course and base course at optimum moisture content to required grades, lines, cross sections, and thickness to not less than 100 percent of maximum dry unit weight according to ASTM D 698.

C. Pavement Shoulders: Place shoulders along edges of subbase course and base course to prevent lateral movement. Construct shoulders, at least 12 inches wide, of satisfactory soil materials and compact simultaneously with each subbase and base layer to not less than 98 percent of maximum dry unit weight according to ASTM D 698.


Specifications



A. Special Inspections: Owner will engage a qualified special inspector to perform the following special inspections:

1. Determine prior to placement of fill that site has been prepared in compliance with requirements.

2. Determine that fill material and maximum lift thickness comply with requirements. 3. Determine, at the required frequency, that in-place density of compacted fill complies with

requirements.

B. Testing Agency: Owner will engage a qualified geotechnical engineering testing agency to perform tests and inspections.

C. Allow testing agency to inspect and test subgrades and each fill or backfill layer. Proceed with subsequent earth moving only after test results for previously completed work comply with requirements.

D. Footing Subgrade: At footing subgrades, at least one test of each soil stratum will be performed to verify design bearing capacities. Subsequent verification and approval of other footing subgrades may be based on a visual comparison of subgrade with tested subgrade when approved by Architect.

E. Testing agency will test compaction of soils in place according to ASTM D 1556, ASTM D 2167, ASTM D 2922, and ASTM D 2937, as applicable. Tests will be performed at the following locations and frequencies:

1. Paved Areas: At subgrade and at each compacted fill and backfill layer, at least one test for every 2000 sq. ft. or less of paved area or building slab, but in no case fewer than three tests.

F. When testing agency reports that subgrades, fills, or backfills have not achieved degree of compaction specified, scarify and moisten or aerate, or remove and replace soil materials to depth required; recompact and retest until specified compaction is obtained.

3.018 PROTECTION

A. Protecting Graded Areas: Protect newly graded areas from traffic, freezing, and erosion. Keep free of trash and debris.

B. Repair and reestablish grades to specified tolerances where completed or partially completed surfaces become eroded, rutted, settled, or where they lose compaction due to subsequent construction operations or weather conditions.

1. Scarify or remove and replace soil material to depth as directed by Architect; reshape and recompact.

C. Where settling occurs before Project correction period elapses, remove finished surfacing, backfill with additional soil material, compact, and reconstruct surfacing.

1. Restore appearance, quality, and condition of finished surfacing to match adjacent work, and eliminate evidence of restoration to greatest extent possible.


Specifications


3.019 DISPOSAL OF SURPLUS AND WASTE MATERIALS

A. Remove surplus satisfactory soil and waste materials, including unsatisfactory soil, trash, and debris, and legally dispose of them off Owner's property.

END OF SECTION


Specifications

312010 - 1 BIORETENTION

SECTION 312010

BIORETENTION BASIN

PART 1 - GENERAL




1. Section 311000 "Site Clearing" for clearing and grubbing operations, temporary erosion and sediment control requirements, and tree protection.

2. Section 312000 “Earth Moving” for excavating, compacting, and grading the subgrade; for excavating and backfilling the anchor trench; for protecting the earthwork; and soil conditioning operations.

3. Section 329200 “Turf and Grasses” for final turf establishment within or adjacent to the biofiltration basin.

4. Section 329300 “Plants” for final planting requirements within the biofiltration basin. 5. Section 334100 “Storm Utility Drainage Piping” for installation of storm drainage pipes

and the overflow structures draining the biofiltration basin.

C. MnDOT Standard Specifications for Construction, 2016 Edition.

1.2 SUMMARY

A. This specification will consist of providing all materials, equipment, and labor including, but not limited to, construction of the Bioretention Basin. The basins will receive and filter stormwater runoff from paved surfaces. The work consists of:

1. Providing all materials, equipment, and labor required for excavation of the Bioretention Basin and scarification of the soils below the bioretention soil.

2. Providing all materials, equipment and labor required to produce and install Minnesota Stormwater Manual 4.1.2 Mix B: Enhanced Filtration Blend (Engineered Soil Mix B).

3. Providing all materials, equipment, and labor required to temporarily or permanently stabilize surfaces that drain to the Bioretention Basin.

1.3 DEFINITIONS

A. Bioretention Soil: Specially prepared soil blend with a high infiltration capacity that will be used within the biofiltration basin. The soil blend shall be Minnesota Stormwater Manual 4.1.2 Mix B: Enhanced Filtration Blend (Engineered Soil Mix B).

B. In-situ Soil: Soil that is present at the Project site prior to start of grading activities. This may the soil at the ground surface or may be the soil at the bottom of excavations.


Specifications


1.4 MATERIAL OWNERSHIP

A. Except for stripped topsoil and other materials indicated to be stockpiled or otherwise remain Owner's property, cleared materials shall become Contractor's property and shall be removed from Project site.


A. Delivery of materials to the site for prior approval:

1. Bioretention Soil – Engineered Soil Mix B.

B. Material Testing:

1. Engineered Soil Mix B: Provide the name of supplier, location of all materials, and sample one month prior to delivery of materials to the site. All pre-construction testing is the responsibility of the Contractor. The Contractor must provide the Engineer with with a five-gallon sample of Bioretention Soil mixture a minimum of one month prior to delivery so the materials can be evaluated for conformance with the material requirements as described in Part 2.1 of this Section. Materials shall not be delivered to the site, and work must not proceed until the sample has been approved by the Engineer. If during construction, the Contractor switches to different stockpiles of the base materials, the Contractor must provide the Engineer with enough notice to visually inspect the new stockpiles prior to mixing.

2. Compost: The compost supplier shall provide documentation that the compost has been sampled and tested as required by the Seal of Testing Assurance (STA) Program of the United States Composting Council (USCC)


A. Prior to beginning the installation, sufficient material quantities shall be onsite to complete the installation and stabilize exposed areas without delay.

B. Installation with dry soil conditions is critical to prevent smearing and compaction. Schedule work for periods of dry weather. Do not work if soil conditions are wet.

C. Excavation, soil placement, and rapid stabilization of perimeter slopes with temporary Rapid Stabilization Type 3 or Type 4 per MnDOT 2575.3 (Table 2575-3) or permanent turf establishment must be completed before the next precipitation event.

D. Contractor must construct the Bioretention Basin, unless otherwise noted, to the correct position based on the line and grade information provided by Engineer and Owner.

E. The project area must be staked off and marked to keep all construction traffic and equipment out of the Bioretention Basin.

1.7 MEASUREMENT AND PAYMENT

A. Bioretention Soil – Engineered Soil Mix B: Measurement and payment for accepted quantities of Engineered Soil Mix B installed will be paid for at the Contract unit price per cubic yard.


Specifications


B. Temporary Stabilization: Temporary blocks at curb and gutter openings intended for sediment control shall be considered incidental. Temporary Rapid Stabilization, if required, shall be paid for under SECTION 329200 – TURF AND GRASSES

PART 2 - PRODUCTS

2.1 SOIL AND AGGREGATE MATERIALS

A. Bioretention Soil – Engineered Soil Mix B: Provide well blended soil consisting of a homogenous mixture of 80 percent sand and 20 percent organic leaf compost by volume and meeting:

1. Sand: Meet the gradation requirements of ASTM C-33 Coarse Washed Sand (MnDOT 3126).

2. Organic Leaf Compost: Meet the requirements of MnDOT Standard Specification 3890 for “Grade 2 Compost.”

3. Organic content must range from 2.5 percent to 5 percent by weight. 4. The clay and fines (particles passing the No. 200 sieve) content of the mixture shall not

be greater than 3 percent by weight. 5. The Engineered Soil Mix B shall not contain any topsoil or filter aggregate with fines. 6. The Engineered Soil Mix B shall be premixed and delivered to the site and shall not be

mixed on site.

PART 3 - EXECUTION

3.1 CONSTRUCTION

A. Bioretention Soil: Place the Bioretention Soil in accordance with MnDOT Standard Specification 2105 and the following:

Contractor will be solely responsible for determining the means and methods for meeting the requirements of the placement of the Bioretention Soil. 1. Use backhoe with tooth bucket for basin excavation to avoid compacting or smearing of

soils. Do not use skid steer for excavation within the basin. Use tooth bucket to scarify (rip) underlying soils to remove compaction. Gently mix the first lift of engineered soils with the loosened underlying soils to avoid stratification and promote permeability. Use excavator bucket to place materials. Construction equipment shall not be allowed into the basin. Leveling and final grading within the basin must be completed by hand.

2. Place material in accordance with project Plans and Drawings. The Contractor must place all Bioretention Soil, unless otherwise noted, to the correct position based on the line and grade information provided in the Plans and Drawings. Additionally, the Contractor must construct the material such that the finished thickness is not less than the thickness specified. The allowable tolerances are:

0.5 feet horizontal, 0.1 feet vertical

3. Side slopes of bioretention basin shall be 3h:1v or flatter. 4. Materials placed not meeting the specifications must be removed and placed properly at

the Contractor’s expense. Prevent mixing of dissimilar materials during unloading, stockpiling, or removal from stockpile.


Specifications


5. Turf sod placed in flow paths shall be secured with at least six stakes per square yard. Place stakes along uphill seam edges to prevent undermining flows until sod roots establish.

6. Restrict all construction traffic from accessing the biofiltration basins after placement of Bioretention Soil. This may require temporary fencing installed at Contractor’s expense and at the direction of the Owner or Engineer.

7. Interim erosion prevention and sediment control shall be required to secure the site from risk of precipitation damage at the end of each work day. Do not leave infiltration areas and/or perimeter slopes exposed overnight.

8. Install temporary blocks at curb and gutter openings immediately following curb installation to protect basin from sediment and/or high flow damages. Do not allow water from pavement cleaning operations or runoff from exposed soils into the basin.

9. Bioretention basin shall not be completed until the contributing drainage areas with exposed soils has been fully stabilized and upland drainage areas have been diverted to prevent runoff from entering the basin or into the work areas. Do not use bioretention basin as temporary sediment basins.

10. Keep bioretention basin off-line by restricting stormwater inflow until vegetation is well established in the basin and all up gradient areas have been stabilized and impervious surfaces cleared of construction sediment.

11. (see Section 3.2 PERFORMANCE). 12. Maintenance to establish new plantings will require a total of 1” of water per week and

active weed management that shall extend through the first full growing season after planting.

3.2 PERFORMANCE:

A. Bioretention performance evaluations shall follow the four level assessment procedure described in the Assessment of Stormwater Best Management Practices, (University of Minnesota, February 2007).

B. The bioretention basin performance shall allow for infiltration of all standing water within the basin to occur in less than 48 hours after precipitation ceases. If the Engineer deems that any of the material previously placed is not in conformance with this specification, the Contractor shall remove the material in question and replace with clean material to the Engineer’s satisfaction at the Contractor’s expense. After planting in the biofiltration basins is completed, the Engineer may assess a daily charge of $200.00 for non-compliance, on a calendar day basis, until the Contractor achieves compliance with the 48-hour draw down time

C. Once placed, if testing indicates that performance of the Bioretention Soil does not meet the requirements herein, the Owner reserves the right to require the Contractor, at the Contractor’s expense, to partially or fully remediate or replace the Bioretention Soil within the biofiltration basins plus any modifications to the in-situ soil (scarification) plus any vegetation that is disturbed by the remediation or replacement operation. Following the remediation operation, the Owner reserves the right to hold CONTACTOR responsible for an additional one year period.

3.3 SAMPLING

A. Bioretention Soil:

Sampling shall be in accordance with MnDOT Standard Specifications 3877.3 and the following:

PRE-PLACEMENT OF BIORETENTION SOIL


Specifications


See Section 1.5 ACTION SUBMITTALS for preplacement sampling and testing.

Materials shall not be delivered to the site, and work must not proceed until the Engineer has approved the materials.

POST PLACEMENT OF BIORETENTION SOIL

One random sample (approximately five (5) gallons) from the biofiltration basins may be collected by the Owner’s representative after placement of the Bioretention Soil by the Contractor any time during the first year after placement. Over the one year period the Owner reserves the right to require the Contractor to perform one or all of the following tests of either pre-placement or post-placement samples, at no cost to the Owner, if any of the biofiltration basins fail to drain within 48 hours after precipitation ceases during the course of the one year period:

1. Permeability (Constant Head) (ASTM D2434) test on the sample(s) held by the Owner’s representative at the in-situ compaction.

2. Hydrometer test on the sample held by the Owner’s representative. 3. In-situ ring infiltrometer field test.

Owner reserves the right to take additional samples within the one year period following placement of the Bioretention Soil.

END OF SECTION 31 2010


Specifications

ASPHALT PAVING 32 1216-1

SECTION 32 1216

ASPHALT PAVING

PART 1 - GENERAL



B. Plant mixed asphalt pavement shall conform to the current Mn/DOT Specification 2360 Plant Mixed Asphalt Pavement.

1.02 SUMMARY


1. Hot-mix asphalt paving. 2. Pavement-marking paint.


1. Division 31 Section "Earth Moving" for aggregate subbase and base courses and for aggregate pavement shoulders.

1.03 DEFINITION

A. Hot-Mix Asphalt Paving Terminology: Refer to ASTM D 8 for definitions of terms.

1.04 SUBMITTALS

A. Product Data: For each type of product indicated. Include technical data and tested physical and performance properties.

1. Job-Mix Designs: Certification, by authorities having jurisdiction, of approval of each job mix proposed for the Work.

B. Qualification Data: For qualified manufacturer and Installer.

C. Material Certificates: For each paving material, from manufacturer.

D. Material Test Reports: For each paving material.


Specifications



A. Manufacturer Qualifications: A paving-mix manufacturer registered with and approved by the Minnesota Department of Transportation.

B. Testing Agency Qualifications: Qualified according to ASTM D 3666 for testing indicated.

C. Regulatory Requirements: Comply with materials, workmanship, and other applicable requirements of current Mn/DOT Specification 2360 Plant Mixed Asphalt Pavement for asphalt paving work.

1. Measurement and payment provisions and safety program submittals included in standard specifications do not apply to this Section.


A. Deliver pavement-marking materials to Project site in original packages with seals unbroken and bearing manufacturer's labels containing brand name and type of material, date of manufacture, and directions for storage.

B. Store pavement-marking materials in a clean, dry, protected location within temperature range required by manufacturer. Protect stored materials from direct sunlight.


A. Environmental Limitations: Do not apply asphalt materials if subgrade is wet or excessively damp, if rain is imminent or expected before time required for adequate cure, or if the following conditions are not met:

1. Tack Coat: Minimum surface temperature of 60 deg F. 2. Asphalt Base Course: Minimum surface temperature of 40 deg F and rising at time of

placement. 3. Asphalt Surface Course: Minimum surface temperature of 60 deg F at time of placement.

B. Pavement-Marking Paint: Proceed with pavement marking only on clean, dry surfaces and at a minimum ambient or surface temperature of 55 deg F for water-based materials, and not exceeding 95 deg F.

PART 2 - PRODUCTS

2.01 AGGREGATES

A. General: Use materials and gradations that have performed satisfactorily in previous installations.

B. Coarse Aggregate: Comply with requirements of current Mn/DOT Specification 2360 Plant Mixed Asphalt Pavement for asphalt paving work.

C. Fine Aggregate: Comply with requirements of current Mn/DOT Specification 2360 Plant Mixed Asphalt Pavement for asphalt paving work.


Specifications


D. Mineral Filler: Comply with requirements of current Mn/DOT Specification 2360 Plant Mixed Asphalt Pavement for asphalt paving work.

2.02 ASPHALT MATERIALS

A. Asphalt Binder: Comply with requirements of current Mn/DOT Specification 2360 Plant Mixed Asphalt Pavement for asphalt paving work.

B. Asphalt Cement: Comply with requirements of current Mn/DOT Specification 2360 Plant Mixed Asphalt Pavement for asphalt paving work.

C. Tack Coat: Comply with section 2357.1 through 2357.3 of the Minnesota Department of Transportation’s Standard Specifications for Construction.

D. Water: Potable.

2.03 AUXILIARY MATERIALS

A. Sand: Comply with requirements of current Mn/DOT Specification 2360 Plant Mixed Asphalt Pavement for asphalt paving work.

B. Pavement-Marking Paint: MPI #32 Alkyd Traffic Marking Paint.

1. Color: White.

2.04 MIXES

A. Hot-Mix Asphalt: Dense, hot-laid, hot-mix asphalt plant mixes approved by the Minnesota Department of Transportation and complying with the following requirements:

1. Provide mixes with a history of satisfactory performance in geographical area where Project is located.

2. Refer to the plans for mix designations.

PART 3 - EXECUTION

3.01 EXAMINATION

A. Verify that subgrade is dry and in suitable condition to begin paving.

B. Proof-roll subgrade below pavements with heavy pneumatic-tired equipment to identify soft pockets and areas of excess yielding. Do not proof-roll wet or saturated subgrades.

1. Completely proof-roll subgrade in one direction, repeating proof-rolling in direction perpendicular to first direction. Limit vehicle speed to 3 mph.

2. Proof roll with a loaded 10-wheel, tandem-axle dump truck weighing not less than 15 tons.

3. Excavate soft spots, unsatisfactory soils, and areas of excessive pumping or rutting, as determined by Architect, and replace with compacted backfill or fill as directed.


Specifications


C. Proceed with paving only after unsatisfactory conditions have been corrected.

D. Verify that utilities, traffic loop detectors, and other items requiring a cut and installation beneath the asphalt surface have been completed and that asphalt surface has been repaired flush with adjacent asphalt prior to beginning installation of imprinted asphalt.

3.02 SURFACE PREPARATION

A. General: Immediately before placing asphalt materials, remove loose and deleterious material from substrate surfaces. Ensure that prepared subgrade is ready to receive paving.

B. Tack Coat: Apply uniformly to surfaces of existing pavement in conformance with section 2357 of Minnesota Department of Transportation’s Standard Specification for Construction, latest edition. Tack coat shall be applied at a rate of 0.05 gallons per square yard. Application shall be made at contact surfaces, at joints where bituminous abuts concrete, at joints where “feathering” of the new bituminous mix occurs at the termination of work and between new bituminous courses and along cold longitudinal joints.

1. Allow tack coat to cure undisturbed before applying hot-mix asphalt paving. 2. Avoid smearing or staining adjoining surfaces, appurtenances, and surroundings.

Remove spillages and clean affected surfaces.

3.03 HOT-MIX ASPHALT PLACING

A. Machine place hot-mix asphalt on prepared surface, spread uniformly, and strike off. Place asphalt mix by hand to areas inaccessible to equipment in a manner that prevents segregation of mix. Place each course to required grade, cross section, and thickness when compacted.

1. Place hot-mix asphalt base course in number of lifts and thicknesses indicated. 2. Place hot-mix asphalt surface course in single lift. 3. Spread mix at minimum temperature of 250 deg F. 4. Begin applying mix along centerline of crown for crowned sections and on high side of

one-way slopes unless otherwise indicated. 5. Regulate paver machine speed to obtain smooth, continuous surface free of pulls and

tears in asphalt-paving mat.

B. Place paving in consecutive strips not less than 10 feet wide unless infill edge strips of a lesser width are required.

1. After first strip has been placed and rolled, place succeeding strips and extend rolling to overlap previous strips. Complete a section of asphalt base course before placing asphalt surface course.

C. Promptly correct surface irregularities in paving course behind paver. Use suitable hand tools to remove excess material forming high spots. Fill depressions with hot-mix asphalt to prevent segregation of mix; use suitable hand tools to smooth surface.


Specifications


3.04 JOINTS

A. Construct joints to ensure a continuous bond between adjoining paving sections. Construct joints free of depressions, with same texture and smoothness as other sections of hot-mix asphalt course.

1. Clean contact surfaces and apply tack coat to joints. 2. Offset longitudinal joints, in successive courses, a minimum of 6 inches. 3. Offset transverse joints, in successive courses, a minimum of 24 inches. 4. Construct transverse joints at each point where paver ends a day's work and resumes

work at a subsequent time. Construct these joints using either "bulkhead" or "papered" method according to AI MS-22, for both "Ending a Lane" and "Resumption of Paving Operations."

5. Compact joints as soon as hot-mix asphalt will bear roller weight without excessive displacement.

6. Compact asphalt at joints to a density within 2 percent of specified course density.

3.05 COMPACTION

A. General: Begin compaction as soon as placed hot-mix paving will bear roller weight without excessive displacement. Compact hot-mix paving with hot, hand tampers or with vibratory-plate compactors in areas inaccessible to rollers.

1. Complete compaction before mix temperature cools to 185 deg F.

B. Breakdown Rolling: Complete breakdown or initial rolling immediately after rolling joints and outside edge. Examine surface immediately after breakdown rolling for indicated crown, grade, and smoothness. Correct laydown and rolling operations to comply with requirements.

C. Intermediate Rolling: Begin intermediate rolling immediately after breakdown rolling while hot-mix asphalt is still hot enough to achieve specified density. Continue rolling until hot-mix asphalt course has been uniformly compacted to the following density:

1. Average Density: Comply with requirements of current Mn/DOT Specification 2360 Plant Mixed Asphalt Pavement for asphalt paving work.

D. Finish Rolling: Finish roll paved surfaces to remove roller marks while hot-mix asphalt is still warm.

E. Edge Shaping: While surface is being compacted and finished, trim edges of pavement to proper alignment. Bevel edges while asphalt is still hot; compact thoroughly.

F. Repairs: Remove paved areas that are defective or contaminated with foreign materials and replace with fresh, hot-mix asphalt. Compact by rolling to specified density and surface smoothness.

G. Protection: After final rolling, do not permit vehicular traffic on pavement until it has cooled and hardened.

H. Erect barricades to protect paving from traffic until mixture has cooled enough not to become marked.


Specifications


3.06 INSTALLATION TOLERANCES

A. Pavement Thickness: Compact each course to produce the thickness indicated within the following tolerances:

1. Base Course: Plus or minus 1/2 inch. 2. Surface Course: Plus 1/4 inch, no minus.

B. Pavement Surface Smoothness: Compact each course to produce a surface smoothness within the following tolerances as determined by using a 10-foot straightedge applied transversely or longitudinally to paved areas:

1. Base Course: 1/4 inch. 2. Surface Course: 1/8 inch.

3.07 PAVEMENT MARKING

A. Do not apply pavement-marking paint until layout, colors, and placement have been verified with Architect.

B. Allow paving to age for 30 days before starting pavement marking.

C. Sweep and clean surface to eliminate loose material and dust.

D. Apply paint with mechanical equipment to produce pavement markings, of dimensions indicated, with uniform, straight edges. Apply at manufacturer's recommended rates to provide a minimum wet film thickness of 15 mils.

E. All pavement markings shall be installed in accordance with the Minnesota Manual on Uniform Traffic Control Devices, most recent version.


A. Testing Agency: Owner will engage a qualified testing agency to perform tests and inspections.

B. Thickness: In-place compacted thickness of hot-mix asphalt courses will be determined according to ASTM D 3549.

C. Surface Smoothness: Finished surface of each hot-mix asphalt course will be tested for compliance with smoothness tolerances.

D. In-Place Density: Testing agency will take samples of uncompacted paving mixtures and compacted pavement according to ASTM D 979 or AASHTO T 168.

1. Reference maximum theoretical density will be determined by averaging results from four samples of hot-mix asphalt-paving mixture delivered daily to site, prepared according to ASTM D 2041, and compacted according to job-mix specifications.

2. In-place density of compacted pavement will be determined by testing core samples according to ASTM D 1188 or ASTM D 2726.

a. One core sample will be taken for every 1000 sq. yd. or less of installed pavement, with no fewer than 3 cores taken.


Specifications


b. Field density of in-place compacted pavement may also be determined by nuclear method according to ASTM D 2950 and correlated with ASTM D 1188 or ASTM D 2726.

E. Replace and compact hot-mix asphalt where core tests were taken.

F. Remove and replace or install additional hot-mix asphalt where test results or measurements indicate that it does not comply with specified requirements.

3.09 DISPOSAL

A. Except for material indicated to be recycled, remove excavated materials from Project site and legally dispose of them in an EPA-approved landfill.

1. Do not allow milled materials to accumulate on-site.

END OF SECTION


Specifications

CONCRETE PAVING 32 1313-1

SECTION 32 1313

CONCRETE PAVING

PART 1 - GENERAL



B. Minnesota Department of Transportation’s Standard Specifications for Construction, 2016 Edition.

1.02 SUMMARY


1. Driveways. 2. Curbs and gutters. 3. Walks. 4. Exposed aggregate banding.


1. Division 03 Section "Cast-in-Place Concrete" for general building applications of concrete.

2. Division 32 Section "Concrete Paving Joint Sealants" for joint sealants in expansion and contraction joints within concrete paving and in joints between concrete paving and asphalt paving or adjacent construction.

C. In addition to this specification, comply with the requirements of Mn/DOT Standard Specification Sections 2301, 2521, 2531 and all referenced sections within. Method of Measurement and Method of Payment sections do not apply to this project. Incentive payments also do not apply to this project.

1.03 DEFINITIONS

A. Cementitious Materials: Portland cement alone or in combination with one or more of blended hydraulic cement, fly ash and other pozzolans, and ground granulated blast-furnace slag.

1.04 SUBMITTALS


B. Other Action Submittals:


Specifications


1. Design Mixtures: For each concrete paving mixture. Include alternate design mixtures when characteristics of materials, Project conditions, weather, test results, or other circumstances warrant adjustments.

C. Qualification Data: For qualified ready-mix concrete manufacturer and testing agency.

D. Material Certificates: For the following, from manufacturer:

1. Cementitious materials. 2. Steel reinforcement and reinforcement accessories. 3. Fiber reinforcement. 4. Admixtures. 5. Curing compounds. 6. Applied finish materials. 7. Bonding agent or epoxy adhesive. 8. Joint fillers.

E. Material Test Reports: For each of the following:

1. Aggregates. Include service-record data indicating absence of deleterious expansion of concrete due to alkali-aggregate reactivity.

F. Field quality-control reports.


A. Ready-Mix-Concrete Manufacturer Qualifications: A firm experienced in manufacturing ready-mixed concrete products and that complies with ASTM C 94/C 94M requirements for production facilities and equipment and that is certified by the Minnesota Department of Transportation to produce ready-mix-concrete.

1. Manufacturer certified according to NRMCA's "Certification of Ready Mixed Concrete Production Facilities" (Quality Control Manual - Section 3, "Plant Certification Checklist").

2. Manufacturer certified by Mn/DOT to provide ready-mix-concrete.

B. Testing Agency Qualifications: Qualified according to ASTM C 1077 and ASTM E 329 for testing indicated and qualified per MnDOT Standard Specification Section 2301.

1. Personnel conducting field tests shall be qualified by Mn/DOT for the test being performed..

C. Concrete Testing Service: Engage a qualified and certified testing agency to perform material evaluation tests and to design concrete mixtures.

D. ACI Publications: Comply with ACI 301 unless otherwise indicated.


A. Traffic Control: Maintain access for vehicular and pedestrian traffic as required for other construction activities.


Specifications


PART 2 - PRODUCTS

2.01 FORMS

A. Form Materials: Plywood, metal, metal-framed plywood, or other approved panel-type materials to provide full-depth, continuous, straight, and smooth exposed surfaces.

1. Use flexible or uniformly curved forms for curves with a radius of 100 feet or less. Do not use notched and bent forms.

B. Form Coatings: Provide commercial formulation form-coating compounds with a maximum VOC of 350 grams/liter that will not bond with, stain, or adversely affect concrete surfaces or color and will not impair subsequent treatments of concrete surfaces, including but not limited to water-curing, curing compound, stains or paints.

2.02 STEEL REINFORCEMENT

A. Recycled Content: Provide steel reinforcement with an average recycled content of steel so postconsumer recycled content plus one-half of preconsumer recycled content is not less than 25 percent.

B. Epoxy-Coated Reinforcing Bars: ASTM A 775/A 775M or ASTM A 934/A 934M; with ASTM A 615/A 615M, Grade 60 deformed bars.

C. Epoxy-Coated-Steel Wire: ASTM A 884/A 884M, Class A coated, plain.

D. Epoxy-Coated, Joint Dowel Bars: ASTM A 775/A 775M; with ASTM A 615/A 615M, Grade 60, plain-steel bars.

E. Tie Bars: ASTM A 615/A 615M, Grade 60, deformed.

F. Hook Bolts: ASTM A 307, Grade A, internally and externally threaded. Design hook-bolt joint assembly to hold coupling against paving form and in position during concreting operations, and to permit removal without damage to concrete or hook bolt.

G. Bar Supports: Bolsters, chairs, spacers, and other devices for spacing, supporting, and fastening reinforcing bars, welded wire reinforcement, and dowels in place. Manufacture bar supports according to CRSI's "Manual of Standard Practice" from steel wire, plastic, or precast concrete of greater compressive strength than concrete specified, and as follows:

1. Equip wire bar supports with sand plates or horizontal runners where base material will not support chair legs.

2. For epoxy-coated reinforcement, use epoxy-coated or other dielectric-polymer-coated wire bar supports.

H. Epoxy Repair Coating: Liquid, two-part, epoxy repair coating, compatible with epoxy coating on reinforcement.


Specifications


2.03 CONCRETE MATERIALS

A. Cementitious Material: Comply with the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within. Use the following cementitious materials, of same type, brand, and source throughout Project:

1. Portland Cement: ASTM C 150, gray portland cement Type II.

B. Normal-Weight Aggregates: Comply with the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within.

1. Exposed Aggregate: 3/8 inch river rock.

C. Water: Potable and complying with ASTM C 94/C 94M.

D. Air-Entraining Admixture: Comply with the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within.

E. Chemical Admixtures: Comply with the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within.

2.04 CURING MATERIALS

A. Comply with the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within.

2.05 RELATED MATERIALS

A. Joint Fillers: ASTM D 1751, asphalt-saturated cellulosic fiber in preformed strips.

2.06 CONCRETE MIXTURES

A. Prepare design mixtures, proportioned according to the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within, for each type and strength of normal-weight concrete, and as determined by either laboratory trial mixtures or field experience.

B. Proportion mixtures to provide normal-weight concrete with the following properties:

1. Compressive Strength 28 Days: 4000 psi. 2. Maximum Water-Cementitious Materials Ratio at Point of Placement: 0.45.

C. Add air-entraining admixture at manufacturer's prescribed rate to result in normal-weight concrete at point of placement having an air content as follows:

1. Air Content: 5 to 7 percent.

D. Chemical Admixtures: Use admixtures according to the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within.


Specifications


E. Cementitious Materials: Limit percentage by weight of cementitious materials other than portland cement according to ACI 301 requirements for concrete exposed to deicing chemicals.

1. Fly Ash or Pozzolan: 25 percent. 2. Ground Granulated Blast-Furnace Slag: 50 percent. 3. Combined Fly Ash or Pozzolan, and Ground Granulated Blast-Furnace Slag: 50 percent,

with fly ash or pozzolan not exceeding 25 percent.

2.07 CONCRETE MIXING

A. Ready-Mixed Concrete: Measure, batch, and mix concrete materials and concrete according to the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within. Furnish batch certificates for each batch discharged and used in the Work.

B. Project-Site Mixing: Measure, batch, and mix concrete materials and concrete according to the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within. Mix concrete materials in appropriate drum-type batch machine mixer.

PART 3 - EXECUTION

3.01 EXAMINATION

A. Examine exposed subgrades and subbase surfaces for compliance with requirements for dimensional, grading, and elevation tolerances.

B. Prepare subgrade per the requirements of Mn/DOT 2112.3.

C. Proceed with installation only after unsatisfactory conditions have been corrected.

3.02 PREPARATION

A. Remove loose material from compacted subbase surface immediately before placing concrete.

3.03 EDGE FORMS AND SCREED CONSTRUCTION

A. Set, brace, and secure edge forms, bulkheads, and intermediate screed guides to required lines, grades, and elevations. Install forms to allow continuous progress of work and so forms can remain in place at least 24 hours after concrete placement.

B. Clean forms after each use and coat with form-release agent to ensure separation from concrete without damage.

3.04 STEEL REINFORCEMENT

A. General: Comply with the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within.


Specifications


B. General: Comply with CRSI's "Manual of Standard Practice" for fabricating, placing, and supporting reinforcement

C. Clean reinforcement of loose rust and mill scale, earth, ice, or other bond-reducing materials.

D. Arrange, space, and securely tie bars and bar supports to hold reinforcement in position during concrete placement. Maintain minimum cover to reinforcement.

E. Epoxy-Coated Reinforcement: Use epoxy-coated steel wire ties to fasten epoxy-coated reinforcement. Repair cut and damaged epoxy coatings with epoxy repair coating according to ASTM D 3963/D 3963M.

F. Install fabricated bar mats in lengths as long as practicable. Handle units to keep them flat and free of distortions. Straighten bends, kinks, and other irregularities, or replace units as required before placement. Set mats for a minimum 2-inch overlap of adjacent mats.

3.05 JOINTS

A. General: Comply with the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within.

B. General: Form construction, isolation, and contraction joints and tool edges true to line, with faces perpendicular to surface plane of concrete. Construct transverse joints at right angles to centerline unless otherwise indicated.

1. When joining existing paving, place transverse joints to align with previously placed joints unless otherwise indicated.

C. Construction Joints: Set construction joints at side and end terminations of paving and at locations where paving operations are stopped for more than one-half hour unless paving terminates at isolation joints.

1. Continue steel reinforcement across construction joints unless otherwise indicated. Do not continue reinforcement through sides of paving strips unless otherwise indicated.

2. Provide tie bars at sides of paving strips where indicated. 3. Butt Joints: Use bonding agent at joint locations where fresh concrete is placed against

hardened or partially hardened concrete surfaces. 4. Doweled Joints: Install dowel bars and support assemblies at joints where indicated.

Lubricate or coat with asphalt one-half of dowel length to prevent concrete bonding to one side of joint.

D. Isolation Joints: Form isolation joints of preformed joint-filler strips abutting concrete curbs, catch basins, manholes, inlets, structures, other fixed objects, and where indicated.

1. Locate expansion joints at intervals of 50 feet unless otherwise indicated. 2. Extend joint fillers full width and depth of joint. 3. Terminate joint filler not less than 1/2 inch or more than 1 inch below finished surface if

joint sealant is indicated. 4. Place top of joint filler 1/16” below finished concrete surface if joint sealant is not

indicated. 5. Furnish joint fillers in one-piece lengths. Where more than one length is required, lace or

clip joint-filler sections together.


Specifications


6. During concrete placement, protect top edge of joint filler with metal, plastic, or other temporary preformed cap. Remove protective cap after concrete has been placed on both sides of joint.

E. Contraction Joints: Form weakened-plane contraction joints, sectioning concrete into areas as indicated. Construct contraction joints per plan sheet details.

F. Edging: After initial floating, tool edges of paving, gutters, curbs, and joints in concrete with an edging tool to a 1/4-inch radius. Repeat tooling of edges after applying surface finishes.

3.06 CONCRETE PLACEMENT

A. Comply with the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within.

B. Before placing concrete, inspect and complete formwork installation, steel reinforcement, and items to be embedded or cast-in.

C. Remove snow, ice, or frost from subbase surface and steel reinforcement before placing concrete. Do not place concrete on frozen surfaces.

D. Moisten subbase to provide a uniform dampened condition at time concrete is placed. Do not place concrete around manholes or other structures until they are at required finish elevation and alignment.

E. Comply with ACI 301 requirements for measuring, mixing, transporting, and placing concrete.

F. Do not add water to concrete during delivery or at Project site. Do not add water to fresh concrete after testing.

G. Deposit and spread concrete in a continuous operation between transverse joints. Do not push or drag concrete into place or use vibrators to move concrete into place.

H. Consolidate concrete according to ACI 301 by mechanical vibrating equipment supplemented by hand spading, rodding, or tamping.

1. Consolidate concrete along face of forms and adjacent to transverse joints with an internal vibrator. Keep vibrator away from joint assemblies, reinforcement, or side forms. Use only square-faced shovels for hand spreading and consolidation. Consolidate with care to prevent dislocating reinforcement, dowels and joint devices.

I. Screed paving surface with a straightedge and strike off.

J. Commence initial floating using bull floats or darbies to impart an open-textured and uniform surface plane before excess moisture or bleed water appears on the surface. Do not further disturb concrete surfaces before beginning finishing operations or spreading surface treatments.

K. Curbs and Gutters: Use design mixture for automatic machine placement. Produce curbs and gutters to required cross section, lines, grades, finish, and jointing.

L. Slip-Form Paving: Use design mixture for automatic machine placement. Produce paving to required thickness, lines, grades, finish, and jointing.


Specifications


1. Compact subbase and prepare subgrade of sufficient width to prevent displacement of slip-form paving machine during operations.

M. Cold-Weather Placement: Protect concrete work from physical damage or reduced strength that could be caused by frost, freezing, or low temperatures. Comply with the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within. Comply with ACI 306.1 and the following:

1. When air temperature has fallen to or is expected to fall below 40 deg F, uniformly heat water and aggregates before mixing to obtain a concrete mixture temperature of not less than 50 deg F and not more than 80 deg F at point of placement.

2. Do not use frozen materials or materials containing ice or snow. 3. Do not use calcium chloride, salt, or other materials containing antifreeze agents or

chemical accelerators unless otherwise specified and approved in design mixtures.

N. Hot-Weather Placement: Comply with the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within. Comply with ACI 301 and as follows when hot-weather conditions exist:

1. Cool ingredients before mixing to maintain concrete temperature below 90 deg F at time of placement. Chilled mixing water or chopped ice may be used to control temperature, provided water equivalent of ice is calculated in total amount of mixing water.

2. Cover steel reinforcement with water-soaked burlap so steel temperature will not exceed ambient air temperature immediately before embedding in concrete.

3. Fog-spray forms, steel reinforcement, and subgrade just before placing concrete. Keep subgrade moisture uniform without standing water, soft spots, or dry areas.

3.07 CONCRETE FINISHING

A. General: Do not add water to concrete surfaces during finishing operations.

B. Float Finish: Begin the second floating operation when bleed-water sheen has disappeared and concrete surface has stiffened sufficiently to permit operations. Float surface with power-driven floats or by hand floating if area is small or inaccessible to power units. Finish surfaces to true planes. Cut down high spots and fill low spots. Refloat surface immediately to uniform granular texture.1. Medium Broom Finish: Draw a medium-bristle broom across float-finished concrete

surface perpendicular to line of traffic to provide a uniform, fine-line texture.

C. Exposed Aggregate Finish: Proceed as soon as the surface grout can be removed by simultaneous brushing and flushing with water without overexposing or dislodging the aggregate. Avoid traffic on the concrete during this operation. Use same method of exposure throughout the work. Wash water must be contained and disposed of utilizing an MPCA approved method.

3.08 CONCRETE PROTECTION AND CURING

A. General: Protect freshly placed concrete from premature drying and excessive cold or hot temperatures.

B. Comply with ACI 306.1 for cold-weather protection.


Specifications


C. Evaporation Retarder: Apply evaporation retarder to concrete surfaces if hot, dry, or windy conditions cause moisture loss approaching 0.2 lb/sq. ft. x h before and during finishing operations. Apply according to manufacturer's written instructions after placing, screeding, and bull floating or darbying concrete but before float finishing.

D. Begin curing after finishing concrete but not before free water has disappeared from concrete surface.

E. Curing Methods: Comply with the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within.

3.09 PAVING TOLERANCES

A. Comply with tolerances in the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within. No incentives payments will be made.


A. Testing Agency: Owner will engage a qualified testing agency to perform tests and inspections.

B. Testing Services: Testing of composite samples of fresh concrete obtained according to ASTM C 172 shall be performed according to the requirements of Mn/DOT Standard Specification 2301, 2521 and 2531 and referenced standards within.

C. Strength of each concrete mixture will be satisfactory if average of any three consecutive compressive-strength tests equals or exceeds specified compressive strength and no compressive-strength test value falls below specified compressive strength by more than 500 psi.

D. Test results shall be reported in writing to Architect, concrete manufacturer, and Contractor within 48 hours of testing. Reports of compressive-strength tests shall contain Project identification name and number, date of concrete placement, name of concrete testing and inspecting agency, location of concrete batch in Work, design compressive strength at 28 days, concrete mixture proportions and materials, compressive breaking strength, and type of break for both 7- and 28-day tests.

E. Nondestructive Testing: Impact hammer, sonoscope, or other nondestructive device may be permitted by Architect but will not be used as sole basis for approval or rejection of concrete.

F. Additional Tests: Testing and inspecting agency shall make additional tests of concrete when test results indicate that slump, air entrainment, compressive strengths, or other requirements have not been met, as directed by Architect.

G. Concrete paving will be considered defective if it does not pass tests and inspections.

H. Additional testing and inspecting, at Contractor's expense, will be performed to determine compliance of replaced or additional work with specified requirements.

I. Prepare test and inspection reports.


Specifications


3.011 REPAIRS AND PROTECTION

A. Remove and replace concrete paving that is broken, damaged, or defective or that does not comply with requirements in this Section. Remove work in complete sections from joint to joint unless otherwise approved by Architect.

B. Drill test cores, where directed by Architect, when necessary to determine magnitude of cracks or defective areas. Fill drilled core holes in satisfactory paving areas with portland cement concrete bonded to paving with epoxy adhesive.

C. Protect concrete paving from damage. Exclude traffic from paving for at least 14 days after placement. When construction traffic is permitted, maintain paving as clean as possible by removing surface stains and spillage of materials as they occur.

D. Maintain concrete paving free of stains, discoloration, dirt, and other foreign material. Sweep paving not more than two days before date scheduled for Substantial Completion inspections.

END OF SECTION


Specifications

CONCRETE PAVING JOINT SEALANTS 32 1373-1

SECTION 32 1373

CONCRETE PAVING JOINT SEALANTS

PART 1 - GENERAL



1.02 SUMMARY


1. Cold-applied joint sealants. 2. Hot-applied joint sealants.


1. Division 32 Section "Asphalt Paving" for constructing joints between concrete and asphalt pavement.

2. Division 32 Section "Concrete Paving" for constructing joints in concrete pavement. 3. Mn/DOT Specification Sections 2301, 2521, 2531, 3722, 3723 and all other sections

referenced within.

1.03 PRECONSTRUCTION TESTING

A. Preconstruction Compatibility and Adhesion Testing: Submit to joint-sealant manufacturers, for testing indicated below, Samples of materials that will contact or affect joint sealants.

1. Use ASTM C 1087 to determine whether priming and other specific joint-preparation techniques are required to obtain rapid, optimum adhesion of joint sealants to joint substrates.

2. Submit no fewer than eight pieces of each type of material, including joint substrates, shims, joint-sealant backings, secondary seals, and miscellaneous materials.

3. Schedule sufficient time for testing and analyzing results to prevent delaying the Work. 4. For materials failing tests, obtain joint-sealant manufacturer's written instructions for

corrective measures including use of specially formulated primers. 5. Testing will not be required if joint-sealant manufacturers submit joint-preparation data

that are based on previous testing, not older than 24 months, of sealant products for compatibility with and adhesion to joint substrates and other materials matching those submitted.

1.04 SUBMITTALS

A. Product Data: For each joint-sealant product indicated.


Specifications


B. Samples for Verification: For each kind and color of joint sealant required, provide Samples with joint sealants in 1/2-inch- wide joints formed between two 6-inch- long strips of material matching the appearance of exposed surfaces adjacent to joint sealants.

C. Pavement-Joint-Sealant Schedule: Include the following information:

1. Joint-sealant application, joint location, and designation. 2. Joint-sealant manufacturer and product name. 3. Joint-sealant formulation. 4. Joint-sealant color.

D. Qualification Data: For qualified Installer and testing agency.

E. Product Certificates: For each type of joint sealant and accessory, from manufacturer.

F. Product Test Reports: Based on evaluation of comprehensive tests performed by a qualified testing agency, for joint sealants.

G. Preconstruction Compatibility and Adhesion Test Reports: From joint-sealant manufacturer, indicating the following:

1. Materials forming joint substrates and joint-sealant backings have been tested for compatibility with and adhesion to joint sealants.

2. Interpretation of test results and written recommendations for primers and substrate preparation needed for adhesion.


A. Installer Qualifications: Manufacturer's authorized representative who is trained and approved for installation of units required for this Project.

B. Source Limitations: Obtain each type of joint sealant from single source from single manufacturer.

C. Product Testing: Test joint sealants using a qualified testing agency.

1. Testing Agency Qualifications: An independent testing agency qualified according to ASTM C 1021 to conduct the testing indicated.


A. Do not proceed with installation of joint sealants under the following conditions:

1. When ambient and substrate temperature conditions are outside limits permitted by joint-sealant manufacturer or are below 40 deg F.

2. When joint substrates are wet. 3. Where joint widths are less than those allowed by joint-sealant manufacturer for

applications indicated. 4. Where contaminants capable of interfering with adhesion have not yet been removed

from joint substrates.


Specifications


PART 2 - PRODUCTS

2.01 MATERIALS

A. Compatibility: Provide joint sealants, backing materials, and other related materials that are compatible with one another and with joint substrates under conditions of service and application, as demonstrated by joint-sealant manufacturer based on testing and field experience.

B. Colors of Exposed Joint Sealants: As selected by Architect from manufacturer's full range.

2.02 COLD-APPLIED JOINT SEALANTS

A. Type NS Silicone Sealant for Concrete: Single-component, low-modulus, neutral-curing, non-sag silicone sealant complying with ASTM D 5893 for Type NS.

1. Products: a. Crafco Inc.; RoadSaver Silicone. b. Dow Corning Corporation; 888.

B. Type SL Silicone Sealant for Concrete and Asphalt: Single-component, low-modulus, neutral-curing, self-leveling silicone sealant complying with ASTM D 5893 for Type SL.

1. Products: a. Crafco Inc.; RoadSaver Silicone SL. b. Dow Corning Corporation; 890-SL.

C. Multi-component Low-Modulus Sealant for Concrete and Asphalt: Proprietary formulation consisting of reactive petropolymer and activator components producing a pourable, self-leveling sealant.

1. Products: a. Meadows, W. R., Inc.; Sof-Seal.

2.03 HOT-APPLIED JOINT SEALANTS

A. Elastomeric Sealant for Concrete: Single-component formulation complying with ASTM D 3406.

1. Products: a. Crafco Inc.; Superseal 444/777. b. Meadows, W. R., Inc.; Poly-Jet 3406.

B. Sealant for Concrete and Asphalt: Single-component formulation complying with ASTM D 3405.

1. Products: a. Koch Materials Company; Product No. 9005. b. Koch Materials Company; Product No. 9030. c. Meadows, W. R., Inc.; Sealtight Hi-Spec.


Specifications


2.04 JOINT-SEALANT BACKER MATERIALS

A. General: Provide joint-sealant backer materials that are non-staining; are compatible with joint substrates, sealants, primers, and other joint fillers; and are approved for applications indicated by joint-sealant manufacturer based on field experience and laboratory testing.

B. Round Backer Rods for Cold- and Hot-Applied Sealants: ASTM D 5249, Type 1, of diameter and density required to control sealant depth and prevent bottom-side adhesion of sealant.

C. Backer Strips for Cold- and Hot-Applied Sealants: ASTM D 5249; Type 2; of thickness and width required to control sealant depth, prevent bottom-side adhesion of sealant, and fill remainder of joint opening under sealant.

D. Round Backer Rods for Cold-Applied Sealants: ASTM D 5249, Type 3, of diameter and density required to control sealant depth and prevent bottom-side adhesion of sealant.

2.05 PRIMERS

A. Primers: Product recommended by joint-sealant manufacturer where required for adhesion of sealant to joint substrates indicated, as determined from preconstruction joint-sealant-substrate tests and field tests.

PART 3 - EXECUTION

3.01 EXAMINATION

A. Examine joints indicated to receive joint sealants, with Installer present, for compliance with requirements for joint configuration, installation tolerances, and other conditions affecting joint-sealant performance.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

3.02 PREPARATION

A. Surface Cleaning of Joints: Clean out joints immediately before installing joint sealants to comply with joint-sealant manufacturer's written instructions.

B. Joint Priming: Prime joint substrates where indicated or where recommended in writing by joint-sealant manufacturer, based on preconstruction joint-sealant-substrate tests or prior experience. Apply primer to comply with joint-sealant manufacturer's written instructions. Confine primers to areas of joint-sealant bond; do not allow spillage or migration onto adjoining surfaces.

3.03 INSTALLATION OF JOINT SEALANTS

A. General: Comply with joint-sealant manufacturer's written installation instructions for products and applications indicated, unless more stringent requirements apply.


Specifications


B. Sealant Installation Standard: Comply with recommendations in ASTM C 1193 for use of joint sealants as applicable to materials, applications, and conditions indicated.

C. Install backer materials of type indicated to support sealants during application and at position required to produce cross-sectional shapes and depths of installed sealants relative to joint widths that allow optimum sealant movement capability.

1. Do not leave gaps between ends of backer materials. 2. Do not stretch, twist, puncture, or tear backer materials. 3. Remove absorbent backer materials that have become wet before sealant application

and replace them with dry materials.

D. Install sealants using proven techniques that comply with the following and at the same time backings are installed:

1. Place sealants so they directly contact and fully wet joint substrates. 2. Completely fill recesses provided for each joint configuration. 3. Produce uniform, cross-sectional shapes and depths relative to joint widths that allow

optimum sealant movement capability.

E. Tooling of Non-sag Sealants: Immediately after sealant application and before skinning or curing begins, tool sealants according to requirements specified below to form smooth, uniform beads of configuration indicated; to eliminate air pockets; and to ensure contact and adhesion of sealant with sides of joint.

1. Remove excess sealants from surfaces adjacent to joint. 2. Use tooling agents that are approved in writing by joint-sealant manufacturer and that do

not discolor sealants or adjacent surfaces.

F. Provide joint configuration to comply with joint-sealant manufacturer's written instructions, unless otherwise indicated.

G. Provide recessed joint configuration for silicone sealants of recess depth and at locations indicated.

3.04 CLEANING

A. Clean off excess joint sealant or sealant smears adjacent to joints as the Work progresses, by methods and with cleaning materials approved in writing by manufacturers of joint sealants and of products in which joints occur.

3.05 PROTECTION

A. Protect joint sealants, during and after curing period, from contact with contaminating substances and from damage resulting from construction operations or other causes so sealants are without deterioration or damage at time of Substantial Completion. If, despite such protection, damage or deterioration occurs, cut out and remove damaged or deteriorated joint sealants immediately and replace with joint sealant so installations in repaired areas are indistinguishable from the original work.

END OF SECTION


Specifications

TURF AND GRASSES 32 9200-1

SECTION 32 9200

TURF AND GRASSES

PART 1 - GENERAL



B. Minnesota Department of Transportation’s “Standard Specifications for Construction”, 2005 Edi-tion.

1.02 SUMMARY


1. Sodding.

2. Seeding

3. Erosion-control material(s).


1. Division 31 Section “Site Clearing” for topsoil stripping and stockpiling.

2. Division 31 Section “Earth Moving” for excavation, filling and backfilling, and rough grading.

1.03 SUBMITTALS


1. Fertilizers

B. Qualification Data: For qualified landscape/sod/seed Installer specified in the “Quality Assurance” Article to demonstrate their capabilities and experience. Include lists of completed projects with project names and addresses, names and address of Consultants and owners, and other information specified

C. Product Certificates: For fertilizer from manufacturer.

D. Maintenance Instructions: Recommended procedures to be established by Owner for maintenance of turf and native grass seeded areas during a calendar year. Submit before expiration of required initial maintenance periods.


A. Installer Qualifications: A qualified landscape Installer whose work has resulted in successful turf and native grass seed establishment.


Specifications


1. Experience: Five years experience in turf installation in addition to requirements in Division 01 Section “Quality Requirements.”

2. Installer’s Field Supervision: Require Installer to maintain an experienced full-time supervisor on Project site when work is in progress.

3. Maintenance Proximity: Not more than one (1) hour normal travel time from Installer’s place of business to Project site.

4. Pesticide Applicator: State licensed, commercial.

B. Soil-Testing Laboratory Qualifications: An independent laboratory or university laboratory, recognized by the State Department of Agriculture, with the experience and capability to conduct the testing indicated and that specializes in types of tests to be performed.

C. Soil Analysis: For each unamended soil type, furnish soil analysis and a written report by a qualified soil-testing laboratory stating percentages of organic matter; gradation of sand, silt, and clay content, deleterious material; pH; and mineral and plant-nutrient content of the soil.

1. Testing methods and written recommendations shall comply with USDA’s Handbook No. 60.

2. The soil-testing laboratory shall oversee soil sampling, with depth, location, and number of samples to be taken per instructions from Architect. A minimum of three (3) representative samples shall be taken from varied locations for each soil to be used or amended for planting purposes.

3. Report suitability of tested soil for turf growth. a. Based on the test results, state recommendations for soil treatments and soil

amendments to be incorporated. State recommendations in weight per 1000 sq. ft. (92.9 sq. m) or volume per cu. yd. (0.76 cu. m) for nitrogen, phosphorus, and potash nutrients and soil amendments to be added to produce satisfactory planting soil suitable for healthy, viable plants.

b. Report presence of problem salts, minerals, or heavy metals, including aluminum, arsenic, barium, cadmium, chromium, cobalt, lead, lithium, and vanadium. If such problem materials are present, provide additional recommendations for corrective action.


A. Seed and Other Packaged Materials: Deliver packaged materials in original, unopened containers showing weight, certified analysis, name and address of manufacturer, and indication of conformance with state and federal laws, as applicable.

B. Sod: Harvest, deliver, store, and handle sod according to requirements in “Specifications for Turfgrass Sod Materials” and “Specifications for Turfgrass Sod Transplanting and Installation” in TPI’s “Guideline Specifications to Turfgrass Sodding.” Deliver sod in time for planting within 24 hours of harvesting. Protect sod from breakage and drying.

C. Bulk Materials:

1. Do not dump or store bulk materials near structures, utilities, walkways and pavements, or on existing turf areas or plants.

2. Provide erosion-control measures to prevent erosion or displacement of bulk materials, discharge of soil-bearing water runoff, and airborne dust reaching adjacent properties, water conveyance systems, or walkways.


Specifications


3. Accompany each delivery of bulk fertilizers and soil amendments with appropriate certificates.


A. Planting Restrictions: Plant during normal planting seasons as approved by the Consultant. Coordinate planting periods with initial maintenance periods to provide required maintenance from date of Substantial Completion.

B. Weather Limitations: Proceed with planting only when existing and forecasted weather conditions permit planting to be performed when beneficial and optimum results may be obtained. Apply products during favorable weather conditions according to manufacturer’s written instructions.

1.07 MAINTENANCE SERVICE

A. Initial Turf Maintenance Service: Provide full maintenance by skilled employees of landscape Installer. Maintain as required in Part 3. Begin maintenance immediately after each area is planted and continue until acceptable turf is established but for not less than the following periods:

1. Sodded Turf: 30 days from date of Substantial Completion.

2. Seeded Turf: 60 days from date of Substantial Completion.

B. Watering: Provide and maintain temporary piping, hoses, and lawn-watering equipment to convey water from sources and to keep lawns/meadows uniformly moist to a depth of 4-inches. Water lawn at the minimum rate of 1-inch per week.

PART 2 - PRODUCTS

2.01 SEED

A. Grass Seed: Fresh, clean, dry, new-crop seed complying with AOSA's "Rules for Testing Seeds" for purity and germination tolerances.

B. Seed Species:

1. Type 1 Seed Mix: Applied at 210 pounds per acre and proportioned by weight as follows:

a. 30 percent Brooklawn Kentucky Bluegrass b. 20 percent Able I Kentucky Bluegrass c. 25 percent Paragon GLR Perennial Ryegrass d. 25 percent Evening Shade Perennial Ryegrass

2.02 TURFGRASS SOD

A. Turfgrass Sod: Provide sod of grass species and varieties, proportions by weight, and minimum percentages of purity, germination, and maximum percentage of weed seed to comply with Mn/DOT 3878 and shall be type “mineral” sod, per Mn/DOT 3878.2D.


Specifications


2.03 FERTILIZERS

A. Commercial Fertilizer: Commercial-grade complete fertilizer of neutral character, consisting of fast- and slow-release nitrogen, 50 percent derived from natural organic sources of urea formaldehyde, phosphorous, and potassium in the following composition:

1. Composition: Nitrogen, phosphorous, and potassium in amounts recommended in soil reports from a qualified soil-testing laboratory.

2.04 TOPSOIL

A. Imported topsoil or manufactured topsoil from off-site sources. Obtain topsoil displaced from naturally well-drained construction or mining sites where topsoil occurs at least 6 inches (100 mm) in turf areas.

1. Additional Properties of Imported Topsoil or Manufactured Topsoil: Screened and free of stones 1 inch (25 mm) or larger in any dimension; free of roots, plants, sod, clods, clay lumps, pockets of coarse sand, paint, paint washout, concrete slurry, concrete layers or chunks, cement, plaster, building debris, oils, gasoline, diesel fuel, paint thinner, turpentine, tar, roofing compound, acid, and other extraneous materials harmful to plant growth; free of obnoxious weeds and invasive plants including quackgrass, Johnsongrass, poison ivy, nutsedge, nimblewill, Canada thistle, bindweed, bentgrass, wild garlic, ground ivy, perennial sorrel, and bromegrass; not infested with nematodes, grubs, other pests, pest eggs, or other undesirable organisms and disease-causing plant pathogens; friable and with sufficient structure to give good tilth and aeration. Continuous, air-filled, pore-space content on a volume/volume basis shall be at least 15 percent when moisture is present at field capacity. Soil shall have a field capacity of at least 15 percent on a dry weight basis.

2.05 MULCHES

A. Straw Mulch: Provide air-dry, clean, mildew- and seed-free, grain straw mulch for use in conjunction with native grass seeded areas. Mulch shall comply with Mn/DOT Standard Specification 3882 Type I (straw mulch) or Type V (hydrocellulose mulch) for those areas to be seeded.

B. Fiber Mulch: Biodegradable, dyed-wood, cellulose-fiber mulch; nontoxic and free of plant growth or germination inhibitors; with a maximum moisture content of 15 percent and a Ph range of 4.5 to 6.5.

C. Nonasphaltic Tackifier: Colloidal tackifier recommended by fiber-mulch manufacturer for slurry application; nontoxic and free of plant-growth or germination inhibitors.

2.06 PESTICIDES

A. General: Pesticide, registered and approved by EPA, acceptable to authorities having jurisdiction, and of type recommended by manufacturer for each specific problem and as required for Project conditions and application. Do not use restricted pesticides unless authorized in writing by authorities having jurisdiction.

B. Pre-Emergent Herbicide (Selective and Non-Selective): Effective for controlling the germination or growth of weeds within planted areas at the soil level directly below the mulch layer.


Specifications


C. Post-Emergent Herbicide (Selective and Non-Selective): Effective for controlling weed growth that has already germinated.

2.07 EROSION CONTROL MATERIALS

A. Straw Biorolls:

B. Erosion-Control Blankets: Biodegradable wood excelsior, straw, or coconut-fiber mat enclosed in a photodegradable plastic mesh. Include manufacturer’s recommended steel wire staples, 6-inches (150 mm) long.

C. Erosion-Control Stabilization Mats: Cellular, non-biodegradable slope-stabilization mats designed to isolate and contain small areas of soil over steeply sloped surface or areas of concentrated water flow, of 3-inch nominal mat thickness. Include manufacturer’s recommended anchorage system for slope conditions.

1. Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following: a. Invisible Structures, Inc.; Slopetame 2. b. Presto Products Company, a business of Alcoa; Geoweb. c. Tenax Corporation - USA; Tenweb.

D. Rapid Stabilization Type 3 or 4: Per MnDOT 2575.3 Table 2575-3.

PART 3 - EXECUTION

3.01 EXAMINATION

A. Examine areas to be planted for compliance with requirements and other conditions affecting performance.

1. Verify that no foreign or deleterious material or liquid such as paint, paint washout, concrete slurry, concrete layers or chunks, cement, plaster, oils, gasoline, diesel fuel, paint thinner, turpentine, tar, roofing compound, or acid has been deposited in soil within a planting area.

2. Do not mix or place soils and soil amendments in frozen, wet, or muddy conditions.

3. Suspend soil spreading, grading, and tilling operations during periods of excessive soil moisture until the moisture content reaches acceptable levels to attain the required results.

4. Uniformly moisten excessively dry soil that is not workable and which is too dusty.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

C. If contamination by foreign or deleterious material or liquid is present in soil within a planting area, remove the soil and contamination as directed by Consultant and replace with new soil.

3.02 PREPARATION

A. Protect structures, utilities, sidewalks, pavements, and other facilities, trees, shrubs, and plantings from damage caused by planting operations.


Specifications


1. Protect adjacent and adjoining areas from hydroseeding and hydromulching overspray if applicable.

2. Protect grade stakes set by others until directed to remove them.

B. Install erosion-control measures to prevent erosion or displacement of soils and discharge of soil-bearing water runoff or airborne dust to adjacent properties and walkways.

3.03 TURF AREA PREPARATION

A. Limit turf subgrade preparation to areas to be seeded, sodded, and disturbed by construction.

B. Newly Graded Subgrades: Loosen subgrade to a minimum depth of 4 inches. Remove stones larger than 1-1/2 inches in any dimension and sticks, roots, rubbish, and other extraneous matter and legally dispose of them off Owner’s property.

1. Spread topsoil, apply soil amendments and fertilizer on surface, and thoroughly blend planting soil. a. Delay mixing fertilizer with planting soil if planting will not proceed within a few

days.

2. Spread topsoil to a depth of 4 inches but not less than required to meet finish grades after light rolling and natural settlement. Do not spread if topsoil or subgrade is frozen, muddy, or excessively wet. a. Spread approximately 1/2 the thickness of planting soil over loosened subgrade.

Mix thoroughly into top 2 inches of subgrade. Spread remainder of topsoil. b. Reduce elevation of topsoil to allow for soil thickness of sod.

C. Unchanged Subgrades: If turf is to be planted in areas unaltered or undisturbed by excavating, grading, or surface-soil stripping operations, prepare surface soil as follows:

1. Remove existing grass, vegetation, and turf. Do not mix into surface soil.

2. Loosen surface soil to a depth of at least 6 inches. Apply soil amendments and fertilizers according to planting soil mix proportions and mix thoroughly into top 4 inches of soil. Till soil to a homogeneous mixture of fine texture.

3. Remove stones larger than 1/2 inch in any dimension and sticks, roots, trash, and other extraneous matter.

4. Legally dispose of waste material, including grass, vegetation, and turf, off Owner’s property.

D. Finish Grading: Grade planting areas to a smooth, uniform surface plane with loose, uniformly fine texture. Grade to within plus or minus 1/2 inch of finish elevation. Roll and rake, remove ridges, and fill depressions to meet finish grades. Limit finish grading to areas that can be planted in the immediate future.

E. Moisten prepared area before planting if soil is dry. Water thoroughly and allow surface to dry before planting. Do not create muddy soil.

F. Before planting, obtain Consultant’s acceptance of finish grading; restore planting areas if eroded or otherwise disturbed after finish grading.

3.04 PREPARATION FOR EROSION-CONTROL MATERIALS


Specifications


A. Prepare area as specified in “Turf Area Preparation” Article.

B. For erosion-control mats, install planting soil in two lifts, with second lift equal to thickness of erosion-control mats. Install erosion-control mat and fasten as recommended by material manufacturer.

C. Fill cells of erosion-control mat with planting soil and compact before planting.

D. For erosion-control blanket or mesh, install from top of slope, working downward, and as recommended by material manufacturer for site conditions. Fasten as recommended by material manufacturer.

E. For straw biorolls, install and fasten per the details and Mn/DOT Standard Specification 2573.

F. For Rapid Stabilization Type 3 or 4, follow MnDOT 2575.3

G. Moisten prepared area before planting if surface is dry. Water thoroughly and allow surface to dry before planting. Do not create muddy soil.

3.05 SODDING

A. Lay sod within 24 hours of harvesting. Do not lay sod if dormant or if ground is frozen or muddy.

B. Lay sod to form a solid mass with tightly fitted joints. Butt ends and sides of sod; do not stretch or overlap. Stagger sod strips or pads to offset joints in adjacent courses. Avoid damage to subgrade or sod during installation. Tamp and roll lightly to ensure contact with subgrade, eliminate air pockets, and form a smooth surface. Work sifted soil or fine sand into minor cracks between pieces of sod; remove excess to avoid smothering sod and adjacent grass.

1. Lay sod across angle of slopes exceeding 1:3.

2. Anchor sod on slopes exceeding 1:6 with steel staples spaced as recommended by sod manufacturer but not less than 2 anchors per sod strip to prevent slippage.

C. Saturate sod with fine water spray within two hours of planting. During first week after planting, water daily or more frequently as necessary to maintain moist soil to a minimum depth of 1-1/2 inches below sod.

3.06 SEEDING

A. Spring seeding shall be completed prior to June 15th. Fall seeding shall be completed between August 15th and September 30th. Areas prepared for seed between the spring and fall seeding dates shall be protected and maintained. Application of herbicides to clear all weeds within the prepared areas shall be occur by August 1st.

B. Seeding shall be done by a machine seeder (Brillion, Gancy, or other approved seeder) evenly distributed on a still day at the application rates specified, crossing the ground two ways, providing one-half of the total application in one pass. If Brillion seeder is used, double application may be accomplished by overlapping one-half each swath so that double coverage is ensured. If seeder is other than Brillion, firming of seed bed with a corrugated cultipacker or other approved method will be required. After seeding, straw mulch shall be uniformly applied to all seeded areas and disc-anchored. On steeper slopes (3:1 or steeper), spray Type I tackifier hydraulic soil stabilizer meeting the requirements of Mn/DOT Section 3884 over mulch.


Specifications


3.07 TURF MAINTENANCE

A. Maintain and establish turf by watering, fertilizing, weeding, mowing, trimming, replanting, and performing other operations as required to establish healthy, viable turf. Roll, regrade, and replant bare or eroded areas and remulch to produce a uniformly smooth turf. Provide materials and installation the same as those used in the original installation.

1. Fill in as necessary soil subsidence that may occur because of settling or other processes. Replace materials and turf damaged or lost in areas of subsidence.

2. In areas where mulch has been disturbed by wind or maintenance operations, add new mulch and anchor as required to prevent displacement.

3. Apply treatments as required to keep turf and soil free of pests and pathogens or disease. Use integrated pest management practices whenever possible to minimize the use of pesticides and reduce hazards.

4. Maintenance period for all turf areas shall be 60 days minimum or until satisfactory turf is established.

B. Watering: Install and maintain temporary piping, hoses, and turf-watering equipment to convey water from sources and to keep turf uniformly moist to a depth of 4 inches.

1. Schedule watering to prevent wilting, puddling, erosion, and displacement of seed or mulch. Lay out temporary watering system to avoid walking over muddy or newly planted areas.

2. Water turf with fine spray at a minimum rate of 1 inch per week unless rainfall precipitation is adequate.

C. Mow turf as soon as top growth is tall enough to cut. Repeat mowing to maintain specified height without cutting more than 1/3 of grass height. Remove no more than 1/3 of grass-leaf growth in initial or subsequent mowings. Do not delay mowing until grass blades bend over and become matted. Do not mow when grass is wet.

D. Turf Postfertilization: Apply fertilizer after initial mowing and when grass is dry.

3.08 SATISFACTORY TURF

A. Turf installations shall meet the following criteria as determined by the Consultant:

1. Satisfactory Sodded Turf: At end of maintenance period, a healthy, well-rooted, even-colored, viable turf has been established, free of weeds, open joints, bare areas, and surface irregularities.

2. Satisfactory Seeded Turf: At end of maintenance period, a healthy, uniform, close stand of grass has been established, free of weeds and surface irregularities, with coverage exceeding 95 percent over any 10 sq. ft. and bare spots not exceeding 3 by 3 inches.

B. Use specified materials to reestablish turf that does not comply with requirements and continue maintenance until turf is satisfactory.

3.09 PESTICIDE APPLICATION

A. Apply pesticides and other chemical products and biological control agents in accordance with requirements of authorities having jurisdiction and manufacturer’s written recommendations.


Specifications


Coordinate applications with Owner’s operations and others in proximity to the Work. Notify Owner before each application is performed.

B. Post-Emergent Herbicides (Selective and Non-Selective): Apply only as necessary to treat already-germinated weeds and in accordance with manufacturer’s written recommendations.

3.010 CLEANUP AND PROTECTION

A. Promptly remove soil and debris created by turf work from paved areas. Clean wheels of vehicles before leaving site to avoid tracking soil onto roads, walks, or other paved areas.

B. Erect temporary fencing or barricades and warning signs as required to protect newly planted areas from traffic. Maintain fencing and barricades throughout initial maintenance period and remove after plantings are established.

C. Remove non-degradable erosion-control measures after grass establishment period.

END OF SECTION


Specifications

PLANTS 329300 - 1

SECTION 32 9300

PLANTS

PART 1 - GENERAL



1.2 SUMMARY


1. Plants. 2. Tree stabilization. 3. Tree-watering devices. 4. Landscape edgings.

B. Related Requirements: 1. Section 329200 "Turf and Grasses" for turf and erosion-control materials.

1.3 DEFINITIONS

A. Backfill: The earth used to replace or the act of replacing earth in an excavation.

B. Balled and Burlapped Stock: Plants dug with firm, natural balls of earth in which they were grown, with a ball size not less than sizes indicated; wrapped with burlap, tied, rigidly supported, and drum laced with twine with the root flare visible at the surface of the ball as recommended by ANSI Z60.1.

C. Container-Grown Stock: Healthy, vigorous, well-rooted plants grown in a container, with a well-established root system reaching sides of container and maintaining a firm ball when removed from container. Container shall be rigid enough to hold ball shape and protect root mass during shipping and be sized according to ANSI Z60.1 for type and size of plant required.

D. Finish Grade: Elevation of finished surface of planting soil.

E. Pesticide: A substance or mixture intended for preventing, destroying, repelling, or mitigating a pest. Pesticides include insecticides, miticides, herbicides, fungicides, rodenticides, and molluscicides. They also include substances or mixtures intended for use as a plant regulator, defoliant, or desiccant. Some sources classify herbicides separately from pesticides.

F. Pests: Living organisms that occur where they are not desired or that cause damage to plants, animals, or people. Pests include insects, mites, grubs, mollusks (snails and slugs), rodents (gophers, moles, and mice), unwanted plants (weeds), fungi, bacteria, and viruses.

G. Planting Area: Areas to be planted.


Specifications

PLANTS 329300 - 2

H. Planting Soil: All planting areas shall receive 12” compacted depth of Select Topsoil Borrow meeting the requirements of Mn/DOT Section 3877.2.B. Planting beds shall be excavated to 12” depth, rototilled, and backfilled with 6” lifts of planting soil. The first lift shall be thoroughly blended with rototilled subgrade.

I. Backfill for all tree holes shall comply with the requirements of Mn/DOT Section 3877.2.B. Thoroughly blend the bottom two inches of topsoil into the subgrade. Excavation and removal of existing soil and placement of topsoil shall be incidental to tree planting operations with no additional payment therefore.

J. Plant; Plants; Plant Material: These terms refer to vegetation in general, including trees, shrubs, vines, ground covers, ornamental grasses, bulbs, corms, tubers, or herbaceous vegetation.

K. Root Flare: Also called "trunk flare." The area at the base of the plant's stem or trunk where the stem or trunk broadens to form roots; the area of transition between the root system and the stem or trunk.

L. Stem Girdling Roots: Roots that encircle the stems (trunks) of trees below the soil surface.

M. Subgrade: The surface or elevation of subsoil remaining after excavation is complete, or the top surface of a fill or backfill before planting soil is placed.

1.4 COORDINATION

A. Coordination with Turf Areas (Lawns): Plant trees, shrubs, and other plants after finish grades are established and before planting turf areas unless otherwise indicated.

1. When planting trees, shrubs, and other plants after planting turf areas, protect turf areas, and promptly repair damage caused by planting operations.


A. Product Data: For each type of product.

1. Plant Materials: Include quantities, sizes, quality, and sources for plant materials.

B. Samples for Verification: For each of the following:

1. Hardwood Mulch: 1-quart volume of each organic mulch required; in sealed plastic bags labeled with composition of materials by percentage of weight and source of mulch. Each Sample shall be typical of the lot of material to be furnished; provide an accurate representation of color, texture, and organic makeup.


A. Qualification Data: For landscape Installer. Include list of similar projects completed by Installer demonstrating Installer's capabilities and experience. Include project names, addresses, and year completed, and include names and addresses of owners' contact persons.

B. Product Certificates: For each type of manufactured product, from manufacturer, and complying with the following:


Specifications

PLANTS 329300 - 3

1. Manufacturer's certified analysis of standard products. 2. Analysis of other materials by a recognized laboratory made according to methods

established by the Association of Official Analytical Chemists, where applicable.

C. Pesticides and Herbicides: Product label and manufacturer's application instructions specific to Project.

D. Sample Warranty: For special warranty.

1.7 CLOSEOUT SUBMITTALS

A. Maintenance Data: Recommended procedures to be established by Owner for maintenance of plants during a calendar year. Submit before expiration of required maintenance periods.


A. Installer Qualifications: A qualified landscape installer whose work has resulted in successful establishment of plants.

1. Professional Membership: Installer shall be a member in good standing of either the Professional Landcare Network or the American Nursery and Landscape Association.

2. Experience: Five years' experience in landscape installation in addition to requirements in Section 014000 "Quality Requirements."

3. Installer's Field Supervision: Require Installer to maintain an experienced full-time supervisor on Project site when work is in progress.

4. Pesticide Applicator: State licensed, commercial.

B. Provide quality, size, genus, species, and variety of plants indicated, complying with applicable requirements in ANSI Z60.1.

1. Selection of plants purchased under allowances is made by Architect, who tags plants at their place of growth before they are prepared for transplanting.

C. Measurements: Measure according to ANSI Z60.1. Do not prune to obtain required sizes.

1. Trees and Shrubs: Measure with branches and trunks or canes in their normal position. Take height measurements from or near the top of the root flare for field-grown stock and container-grown stock. Measure main body of tree or shrub for height and spread; do not measure branches or roots tip to tip. Take caliper measurements 6 inches above the root flare for trees up to 4-inch caliper size, and 12 inches above the root flare for larger sizes.

2. Other Plants: Measure with stems, petioles, and foliage in their normal position.

D. Plant Material Observation: Architect may observe plant material either at place of growth or at site before planting for compliance with requirements for genus, species, variety, cultivar, size, and quality. Architect may also observe trees and shrubs further for size and condition of balls and root systems, pests, disease symptoms, injuries, and latent defects and may reject unsatisfactory or defective material at any time during progress of work. Remove rejected trees or shrubs immediately from Project site.

1. Notify Architect of sources of planting materials twenty-one days in advance of delivery to site.


Specifications

PLANTS 329300 - 4


A. Packaged Materials: Deliver packaged materials in original, unopened containers showing weight, certified analysis, name and address of manufacturer, and indication of compliance with state and Federal laws if applicable.

B. Bulk Materials:

1. Do not dump or store bulk materials near structures, utilities, walkways and pavements, or on existing turf areas or plants.

2. Provide erosion-control measures to prevent erosion or displacement of bulk materials; discharge of soil-bearing water runoff; and airborne dust reaching adjacent properties, water conveyance systems, or walkways.

3. Accompany each delivery of bulk materials with appropriate certificates.

C. Do not prune trees and shrubs before delivery. Protect bark, branches, and root systems from sun scald, drying, wind burn, sweating, whipping, and other handling and tying damage. Do not bend or bind-tie trees or shrubs in such a manner as to destroy their natural shape. Provide protective covering of plants during shipping and delivery. Do not drop plants during delivery and handling.

D. Handle planting stock by root ball.

E. Apply antidesiccant to trees and shrubs using power spray to provide an adequate film over trunks (before wrapping), branches, stems, twigs, and foliage to protect during digging, handling, and transportation.

1. If deciduous trees or shrubs are moved in full leaf, spray with antidesiccant at nursery before moving and again two weeks after planting.

F. Wrap trees and shrubs with burlap fabric over trunks, branches, stems, twigs, and foliage to protect from wind and other damage during digging, handling, and transportation.

G. Deliver plants after preparations for planting have been completed, and install immediately. If planting is delayed more than six hours after delivery, set plants and trees in their appropriate aspect (sun, filtered sun, or shade), protect from weather and mechanical damage, and keep roots moist. 1. Set balled stock on ground and cover ball with soil, peat moss, sawdust, or other

acceptable material. 2. Do not remove container-grown stock from containers before time of planting. 3. Water root systems of plants stored on-site deeply and thoroughly with a fine-mist spray.

Water as often as necessary to maintain root systems in a moist, but not overly wet condition.

1.10 FIELD CONDITIONS

A. Field Measurements: Verify actual grade elevations, service and utility locations, irrigation system components, and dimensions of plantings and construction contiguous with new plantings by field measurements before proceeding with planting work.

B. Weather Limitations: Proceed with planting only when existing and forecasted weather conditions permit planting to be performed when beneficial and optimum results may be obtained. Apply products during favorable weather conditions according to manufacturer's written instructions and warranty requirements.


Specifications

PLANTS 329300 - 5

1.11 PLANT ESTABLISHMENT PERIOD

A. Plant establishment period shall be two years and in accordance with Mn/DOT Section 2571.3.K

PART 2 - PRODUCTS

2.1 PLANT MATERIAL

A. General: Furnish nursery-grown plants true to genus, species, variety, cultivar, stem form, shearing, and other features indicated in Plant List, Plant Schedule, or Plant Legend indicated on Drawings and complying with ANSI Z60.1; and with healthy root systems developed by transplanting or root pruning. Provide well-shaped, fully branched, healthy, vigorous stock, densely foliated when in leaf and free of disease, pests, eggs, larvae, and defects such as knots, sun scald, injuries, abrasions, and disfigurement.

1. Trees with damaged, crooked, or multiple leaders; tight vertical branches where bark is squeezed between two branches or between branch and trunk ("included bark"); crossing trunks; cut-off limbs more than 3/4 inch in diameter; or with stem girdling roots are unacceptable.

2. Collected Stock: Do not use plants harvested from the wild, from native stands, from an established landscape planting, or not grown in a nursery unless otherwise indicated.

B. Provide plants of sizes, grades, and ball or container sizes complying with ANSI Z60.1 for types and form of plants required. Plants of a larger size may be used if acceptable to Architect, with a proportionate increase in size of roots or balls.

C. Root-Ball Depth: Furnish trees and shrubs with root balls measured from top of root ball, which begins at root flare according to ANSI Z60.1. Root flare shall be visible before planting.

D. Labeling: Label at least one plant of each variety, size, and caliper with a securely attached, waterproof tag bearing legible designation of common name and full scientific name, including genus and species. Include nomenclature for hybrid, variety, or cultivar, if applicable for the plant.

E. If formal arrangements or consecutive order of plants is indicated on Drawings, select stock for uniform height and spread, and number the labels to assure symmetry in planting.

2.2 FERTILIZERS

A. Planting Tablets: Tightly compressed chip-type, long-lasting, slow-release, commercial-grade planting fertilizer in tablet form. Tablets shall break down with soil bacteria, converting nutrients into a form that can be absorbed by plant roots.

1. Provide Agriform tablets by Osocote or approved equal. 2. Nutrient Composition: 10-10-5 by weight plus micronutrients. 3. Provide three tablets per tree.


Specifications

PLANTS 329300 - 6

2.3 MULCHES

A. Organic Mulch: Free from deleterious materials and suitable as a top dressing of trees and shrubs, consisting of one of the following:

1. Type: Shredded hardwood. 2. Size Range: 2 inches maximum, 1/2 inch minimum. 3. Color: Natural.

2.4 PESTICIDES

A. General: Pesticide registered and approved by the EPA, acceptable to authorities having jurisdiction, and of type recommended by manufacturer for each specific problem and as required for Project conditions and application. Do not use restricted pesticides unless authorized in writing by authorities having jurisdiction.

B. Pre-Emergent Herbicide (Selective and Nonselective): Effective for controlling the germination or growth of weeds within planted areas at the soil level directly below the mulch layer.

C. Post-Emergent Herbicide (Selective and Nonselective): Effective for controlling weed growth that has already germinated.

2.5 TREE-STABILIZATION MATERIALS

A. Trunk-Stabilization Materials: 1. Shall only be used if required by the Architect. All trunk stabilization methods shall be in

accordance with Mn/DOT standard details and incidental to planting operations with no additional compensation therefore.

2.6 LANDSCAPE EDGINGS

A. Steel Edging: Standard commercial-steel edging, fabricated in sections of standard lengths, with loops stamped from or welded to face of sections to receive stakes. The Contractor shall furnish and install steel edging at planting areas not bounded by pavement. Steel edging shall be considered incidental to planting operations with no additional payment therefore.

1. Edging Size: 3/16 inch thick by 4 inches deep. 2. Stakes: Tapered steel, a minimum of 15 inches long. 3. Accessories: Standard tapered ends, corners, and splicers. 4. Finish: Manufacturer's standard paint.

a. Paint Color: Black.

2.7 TREE-WATERING DEVICES

A. Slow-Release Watering Device: Standard product manufactured for drip irrigation of plants and emptying its water contents over an extended time period manufactured from UV-light-stabilized nylon-reinforced polyethylene sheet, PVC, or HDPE plastic.

1. Color: As selected by Architect from manufacturer's full range.


Specifications

PLANTS 329300 - 7

2.8 MISCELLANEOUS PRODUCTS

A. Antidesiccant: Water-insoluble emulsion, permeable moisture retarder, film forming, for trees and shrubs. Deliver in original, sealed, and fully labeled containers and mix according to manufacturer's written instructions.

B. Burlap: Non-synthetic, biodegradable.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas to receive plants, with Installer present, for compliance with requirements and conditions affecting installation and performance of the Work.

1. Verify that no foreign or deleterious material or liquid such as paint, paint washout, concrete slurry, concrete layers or chunks, cement, plaster, oils, gasoline, diesel fuel, paint thinner, turpentine, tar, roofing compound, or acid has been deposited in soil within a planting area.

2. Verify that plants and vehicles loaded with plants can travel to planting locations with adequate overhead clearance.

3. Suspend planting operations during periods of excessive soil moisture until the moisture content reaches acceptable levels to attain the required results.

4. Uniformly moisten excessively dry soil that is not workable or which is dusty.

B. If contamination by foreign or deleterious material or liquid is present in soil within a planting area, remove the soil and contamination as directed by Architect and replace with new planting soil.


3.2 PREPARATION

A. Protect structures, utilities, sidewalks, pavements, and other facilities and turf areas and existing plants from damage caused by planting operations.

B. Install erosion-control measures to prevent erosion or displacement of soils and discharge of soil-bearing water runoff or airborne dust to adjacent properties and walkways.

C. Lay out individual tree and shrub locations and areas for multiple plantings. Stake locations, outline areas, adjust locations when requested, and obtain Architect's acceptance of layout before excavating or planting. Make minor adjustments as required.

D. Lay out plants at locations directed by Architect. Stake locations of individual trees and shrubs and outline areas for multiple plantings.

3.3 PLANTING AREA ESTABLISHMENT

A. All planting areas shall receive 12” compacted depth of Select Topsoil Borrow meeting the requirements of Mn/DOT Section 3877.2.B. Planting beds shall be excavated to 12” depth,


Specifications

PLANTS 329300 - 8

rototilled, and backfilled with 6” lifts of planting soil. The first lift shall be thoroughly blended with rototilled subgrade.

B. Before planting, obtain Architect's acceptance of finish grading; restore planting areas if eroded or otherwise disturbed after finish grading.

3.4 EXCAVATION FOR TREES AND SHRUBS

A. Planting Pits and Trenches: Excavate circular planting pits.

1. Excavate planting pits with sides sloping inward at a 45-degree angle. Excavations with vertical sides are unacceptable. Trim perimeter of bottom leaving center area of bottom raised slightly to support root ball and assist in drainage away from center. Do not further disturb base. Ensure that root ball will sit on undisturbed base soil to prevent settling. Scarify sides of planting pit smeared or smoothed during excavation.

2. Excavate approximately three times as wide as ball diameter for balled and burlapped and container-grown stock.

3. Excavate at least 12 inches wider than root spread and deep enough to accommodate vertical roots for bare-root stock.

4. Do not excavate deeper than depth of the root ball, measured from the root flare to the bottom of the root ball.

5. If area under the plant was initially dug too deep, add soil to raise it to the correct level and thoroughly tamp the added soil to prevent settling.

6. Maintain angles of repose of adjacent materials to ensure stability. Do not excavate subgrades of adjacent paving, structures, hardscapes, or other new or existing improvements.

7. Maintain supervision of excavations during working hours. 8. Keep excavations covered or otherwise protected when unattended by Installer's

personnel.

B. Obstructions: Notify Architect if unexpected rock or obstructions detrimental to trees or shrubs are encountered in excavations.

1. Hardpan Layer: Drill 6-inch-diameter holes, 24 inches apart, into free-draining strata or to a depth of 10 feet, whichever is less, and backfill with free-draining material.

C. Drainage: Notify Architect if subsoil conditions evidence unexpected water seepage or retention in tree or shrub planting pits.

D. Fill excavations with water and allow to percolate away before positioning trees and shrubs.

3.5 TREE, SHRUB, AND VINE PLANTING

A. Inspection: At time of planting, verify that root flare is visible at top of root ball according to ANSI Z60.1. If root flare is not visible, remove soil in a level manner from the root ball to where the top-most root emerges from the trunk. After soil removal to expose the root flare, verify that root ball still meets size requirements.

B. Roots: Remove stem girdling roots and kinked roots. Remove injured roots by cutting cleanly; do not break.

C. Balled and Burlapped Stock: Set each plant plumb and in center of planting pit or trench with root flare 1 inch above adjacent finish grades.


Specifications

PLANTS 329300 - 9

1. Backfill: Planting soil as specified above.2. After placing some backfill around root ball to stabilize plant, carefully cut and remove

burlap, rope, and wire baskets from tops of root balls and from sides, but do not remove from under root balls. Remove pallets, if any, before setting. Do not use planting stock if root ball is cracked or broken before or during planting operation.

3. Backfill around root ball in layers, tamping to settle soil and eliminate voids and air pockets. When planting pit is approximately one-half filled, water thoroughly before placing remainder of backfill. Repeat watering until no more water is absorbed.

4. Place planting tablets equally distributed around each planting pit when pit is approximately one-half filled. Place tablets beside the root ball about 1 inch from root tips; do not place tablets in bottom of the hole.

a. Quantity: Three for each tree.

5. Continue backfilling process. Water again after placing and tamping final layer of soil.

D. Container-Grown Stock: Set each plant plumb and in center of planting pit or trench with root flare 1 inch above adjacent finish grades.

1. Backfill: Planting soil as specified above. 2. Carefully remove root ball from container without damaging root ball or plant. 3. Backfill around root ball in layers, tamping to settle soil and eliminate voids and air

pockets. When planting pit is approximately one-half filled, water thoroughly before placing remainder of backfill. Repeat watering until no more water is absorbed.

4. Place planting tablets equally distributed around each planting pit when pit is approximately one-half filled. Place tablets beside the root ball about 1 inch from root tips; do not place tablets in bottom of the hole.

a. Quantity: Two per plant.

5. Continue backfilling process. Water again after placing and tamping final layer of soil.

E. Slopes: When planting on slopes, set the plant so the root flare on the uphill side is flush with the surrounding soil on the slope; the edge of the root ball on the downhill side will be above the surrounding soil. Apply enough soil to cover the downhill side of the root ball.

3.6 PLANTING AREA MULCHING

A. Mulch backfilled surfaces of planting areas and other areas indicated. Mulch shall comply with Mn/DOT Type 6 and the following:

1. The mulch shall consist of raw wood material from hard timber. 2. The mulch shall be twice-ground/shredded such that no individual piece shall exceed 2”

in any dimension. 3. Furnishing and installing mulch shall be considered incidental to planting operations with

no additional payment therefore. 4. Mulch shall be applied according to the plans and details. 5. Hardwood Mulch in Planting Areas: Apply 4-inch average thickness of organic mulch over

whole surface of planting area, and finish level with adjacent finish grades. Do not place mulch within 3 inches of trunks or stems.


Specifications

PLANTS 329300 - 10

3.7 EDGING INSTALLATION

A. Steel Edging: Install steel edging where indicated according to manufacturer's written instructions. Anchor with steel stakes spaced approximately 30 inches apart, driven below top elevation of edging.

3.8 INSTALLING SLOW-RELEASE WATERING DEVICE

A. Provide one device for each tree.

B. Place device on top of the mulch at base of tree stem and fill with water according to manufacturer's written instructions.

3.9 PLANT MAINTENANCE

A. Maintain plantings by pruning, cultivating, watering, weeding, fertilizing, mulching, restoring planting saucers, adjusting and repairing tree-stabilization devices, resetting to proper grades or vertical position, and performing other operations as required to establish healthy, viable plantings.

B. Fill in, as necessary, soil subsidence that may occur because of settling or other processes. Replace mulch materials damaged or lost in areas of subsidence.

C. Apply treatments as required to keep plant materials, planted areas, and soils free of pests and pathogens or disease. Use integrated pest management practices when possible to minimize use of pesticides and reduce hazards. Treatments include physical controls such as hosing off foliage, mechanical controls such as traps, and biological control agents.

3.10 PESTICIDE APPLICATION

A. Apply pesticides and other chemical products and biological control agents according to authorities having jurisdiction and manufacturer's written recommendations. Coordinate applications with Owner's operations and others in proximity to the Work. Notify Owner before each application is performed.

B. Pre-Emergent Herbicides (Selective and Nonselective): Apply to tree, shrub, and ground-cover areas according to manufacturer's written recommendations. Do not apply to seeded areas.

C. Post-Emergent Herbicides (Selective and Nonselective): Apply only as necessary to treat already-germinated weeds and according to manufacturer's written recommendations.

3.11 REPAIR AND REPLACEMENT

A. General: Repair or replace existing or new trees and other plants that are damaged by construction operations, in a manner approved by Architect.

1. Submit details of proposed pruning and repairs. 2. Perform repairs of damaged trunks, branches, and roots within 24 hours, if approved. 3. Replace trees and other plants that cannot be repaired and restored to full-growth status,

as determined by Architect.


Specifications

PLANTS 329300 - 11

B. Remove and replace trees that are more than 25 percent dead or in an unhealthy condition before the end of the corrections period or are damaged during construction operations that Architect determines are incapable of restoring to normal growth pattern. 1. Provide one new tree of 4-inch caliper size for each tree being replaced that measures

more than 6 inches in caliper size.

3.12 CLEANING AND PROTECTION

A. During planting, keep adjacent paving and construction clean and work area in an orderly condition. Clean wheels of vehicles before leaving site to avoid tracking soil onto roads, walks, or other paved areas.

B. Remove surplus soil and waste material including excess subsoil, unsuitable soil, trash, and debris and legally dispose of them off Owner's property.

C. Protect plants from damage due to landscape operations and operations of other contractors and trades. Maintain protection during installation and maintenance periods. Treat, repair, or replace damaged plantings.

D. After installation and before Substantial Completion remove nursery tags, nursery stakes, tie tape, labels, wire, burlap, and other debris from plant material, planting areas, and Project site.

E. At time of Substantial Completion, verify that tree-watering devices are in good working order and leave them in place. Replace improperly functioning devices.

END OF SECTION


Specifications

334100 - 1 STORM UTILITY DRAINAGE PIPING

SECTION 33 4100

STORM UTILITY DRAINAGE PIPING

PART 1 - GENERAL



B. MnDOT Standard Specifications for Construction, 2014 Edition.

1.2 SUMMARY


1. Pipe and pipes fittings. 2. Flared end section with trash guard. 3. Catch Basins/Catch Basin Manhole. 4. Casting assemblies. 5. Adjust Casting.



B. Shop Drawings:

1. Manholes: Include plans, elevations, sections, details, frames, and covers. 2. Catch basins: Include plans, elevations, sections, details, frames, covers, and grates.


A. Field quality-control reports.


A. Do not store plastic manholes, pipe, and fittings in direct sunlight.

B. Protect pipe, pipe fittings, and seals from dirt and damage.

C. Handle manholes according to manufacturer's written rigging instructions.

D. Handle catch basins according to manufacturer's written rigging instructions.


Specifications



A. Interruption of Existing Storm Drainage Service: Do not interrupt service to facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary service according to requirements indicated:

1. Notify Engineer no fewer than two days in advance of proposed interruption of service. 2. Do not proceed with interruption of service without Engineer’s written permission. 3. Notify City of Roseville Public Works no fewer than two days in advance of proposed

connection to storm drainage systems within public right of way:

B. Public Works Permit: Acquire permit prior to installation of storm sewer within the public right-of-way.

1. Contact City of Roseville Utilities Division for permit application and fee information. See Plans for information.

C. If select material is encountered in the top portion of the trench excavation, such material shall be stockpiled separately from the remainder of the excavated material and placed in the top 4 feet when backfilling.

1.7 MEASUREMENT AND PAYMENT

A. Storm Sewer Installation: This work includes the installation of reinforced concrete storm sewer, removal of existing pipe and drainage structures, connecting to existing pipes or drainage structures, and furnishing and installing concrete pipe ties according to the Contract Drawings and specifications or as specified by the Engineer. Measurement and payment shall be made at the Contract unit price per linear foot of the appropriate storm sewer installed, which shall be compensation in full for all equipment, material, and labor required to complete the work. 1. Connect to Existing Structures: Connections from subsurface drainage features to

proposed and existing manholes and catch basins shall be precast or core drilled and sealed to provide a clean, water-tight fit. Any damage caused to the existing storm sewer pipe shall be repaired at no expense to the Department and to the satisfaction of the Engineer. These connections are incidental.

2. Connect to Existing Storm Sewer: This work consists of constructing connections into existing storm sewers in accordance with the applicable MnDOT Standard Specifications and the following: Any damage caused to the existing storm sewer pipe shall be repaired at no expense to the Department and to the satisfaction of the Engineer. These connections are incidental.

3. Bulkheads: All bulkheads called for on the Plans required in storm drains, catch basins, manholes or sanitary sewers shall be constructed of brick and mortar to the satisfaction of the Engineer, and shall be incidental.

B. Catch Basins/Catch Basin Manhole/Drop Inlets: Measurement and payment for accepted quantities of Catch Basin/Catch Basin Manholes will be paid for at the Contract unit price per each, complete in place for the various diameters and types, which will be full compensation for materials and materials, excavation, special protection, placing and jointing precast sections, transition slabs, flat tops, construction of base slabs, inverts, connection of inlet and outlet pipes, cleaning and inspection, removal and/or abandonment of existing manholes, or structures, and backfilling outside of pavement areas.


Specifications


C. Casting Assemblies: Measurement and payment for the casting assemblies, including adjustment to finished grade, shall be included with the new catch basin or new manhole at the contract price. New casting assemblies furnished and installed for existing manholes or catch basins shall be measured separately and the contract price shall include adjustment to final grade, saw-cutting & any necessary pavement removal/patching around the existing manhole, and salvaging of the old.

D. Adjust Catch Basin/Replace Casting: Measurement and payment for adjust casting, will be paid for at the Contract unit price per each, complete in place, which will be full compensation for materials and materials including placement of new casting, adjustment to finished grade, saw-cutting & any necessary pavement removal/patching around the existing manhole, and salvaging of the old.

PART 2 - PRODUCTS

2.1 PVC PIPE, FITTINGS, CATCH BASIN MANHOLES/DROP INLETS

A. PVC Sewer Pipe and Fittings:

1. Comply with ASTM F891

B. Catch Basin Manholes/Drop Inlets 1. Manufactured from PVC stock. Pipe connections stubs shall be manufactured from PVC

pipe stock and formed to provide a watertight connections per ASTM D3212 with elastomeric seals conforming to ASTM 477.

2. Grates and Frames: Integrated ductile Iron, provided by the same manufacturer as the catch basins/drop inlets and conforming to ASTM A536 grade 70-50-05. Grates and Frames shall be painted black. See Plans for grate types.

3. Concrete Slab: See Plans for detail. 4. Loading: H-10 medium duty traffic load (pedestrian) 5. Backfill: MnDOT Class V.

2.2 CONCRETE PIPE AND FITTINGS

A. Reinforced-Concrete Sewer Pipe and Fittings:

1. Pipe: Reinforced Concrete Pipe (RCP) shall conform to the requirements of Section 3236 and ASTM C76. Bell-and-spigot or tongue-and-groove ends meeting MnDOT Standard Plate 3000L, or newer. Lift holes will not be permitted in pipe smaller than 54 inches in diameter.

2. Flared End Section with Trash Guard: City of Roseville plate “Flared End Section and Trash Guard”, or approved equal.

3. Joints: “O”-ring joint gaskets shall comply with MnDOT Standard Specifications 2503 and Plate 3006G.

4. Pipe laying, trenching and backfilling shall be in accordance with CEAM Specifications Section 2571 and as stated herein before

5. Pipe ties: Concrete pipe ties shall be furnished and installed in accordance with Standard Plate 3145 in the locations and pipe runs identified in the plans and as directed by the Engineer.


Specifications


2.3 CATCH BASINS/CATCH BASIN MANHOLE/DROP INLETS

A. Standard Precast Concrete Catch Basins: Comply with City of Roseville standard plates MnDOT Standard Specification 2506.

1. Description: ASTM C 478, precast, reinforced concrete, of depth indicated, with provision for watertight joints.

2. Catch Basins: City of Roseville plate “Catch Basin Manhole” with Neenah R3067-R 3. Catch Basin Manholes: City of Roseville plate “Catch Basin Manhole” with plate “Manhole

Top Slab”, and MnDOT no. 700-7 frame with solid cover and center lift hole only, or approved equal.

4. Drop Inlets: City of Roseville plate “Catch Basin 27” Diameter” or City of Roseville plate “Catch Basin Manhole” with plate “Manhole Top Slab” and Neenah R-4342, or approved equal.

5. Size: As specified in the Plans. 6. Base Section: 6-inch minimum thickness for floor slab for Catch Basin Manhole, 6-inch

cast in place or 5-inch precast minimum thickness for Catch Basin 27” Diameter. 7. Riser Sections: 5-inch minimum thickness, diameter to match base section, and lengths

to provide depth indicated. 8. Top Section: Offset flat-slab-top type matching City of Roseville Standard Detail included

in the Plans where indicated. 9. Adjust Catch Basin/Replace Casting: City of Roseville plate “Manhole Casting and

Adjusting Detail” or approved equal. Replace existing casting with Neenah R-3067-C. 10. Joint Sealant: Manhole section joints shall be Type R-4. Ram-Nek material or approved

“O”-ring gasket at each joint; rubber gaskets complying with ASTM C 443. 11. Grade Rings: Include two to four precast reinforced-concrete or HDPE adjusting rings, of

5- to 9-inch total thickness, that match frame and grate. 12. All manhole steps shall conform to Neenah Foundry Step No. R-1981J, or approved

equal, in dimension and strength. Manhole steps shall be spaced 16" on center on the downstream face of the manhole unless specified otherwise. Cast iron manhole steps shall be manufactured from high-test metal having a minimum tensile strength of 35,000 pounds per square inch. Aluminum manhole steps of a design similar to the cast iron steps specified may be used. Aluminum manhole steps shall be made of Apex Ternalloy No. 5 aluminum alloy. Copolymer Polypropylene plastic manhole steps (PSI-PF) may be used or equal.

13. Pipe Connectors: ASTM C 923, cast or fitted into manhole walls, for each pipe connection.

B. Frames and Grates:

1. Conform to the City of Roseville Standard Details included in the Plans. Catch basin manhole casting assemblies shall be MnDOT no. 700-7 frame with solid cover and center lift hole only, or approved equal.

2. Catch basin area drains and drop inlet stool grates shall be Neenah R-4342, or approved equal.

3. Catch basin casting assemblies on all new manhole-type structures shall be Neenah Foundry No. R-3067-R, or approved equal.

4. Castings for adjust catch basin/replace casting shall be Neenah R-3067-C, or approved equal.


Specifications


C. Bulkheads: All bulkheads called for on the Plans required in storm drains, catch basins, manholes or sanitary sewers shall be constructed of brick and mortar to the satisfaction of the Engineer.

2.4 CONCRETE

A. General: Cast-in-place concrete according to ACI 318, ACI 350/350R, and the following:

1. Cement: ASTM C 150, Type II. 2. Fine Aggregate: ASTM C 33, sand. 3. Coarse Aggregate: ASTM C 33, crushed gravel. 4. Water: Potable.

B. Portland Cement Design Mix: 4000 psi minimum, with 0.45 maximum water/cementitious materials ratio.

1. Reinforcing Fabric: ASTM A 185/A 185M, steel, welded wire fabric, plain. 2. Reinforcing Bars: ASTM A 615/A 615M, Grade 60 (420 MPa) deformed steel.

C. Manhole Channels and Benches: Factory or field formed from concrete. Portland cement design mix, 4000 psi minimum, with 0.45 maximum water/cementitious materials ratio. Include channels and benches in manholes.

1. Channels: Concrete invert, formed to same width as connected piping, with height of vertical sides to three-fourths of pipe diameter. Form curved channels with smooth, uniform radius and slope.

a. Invert Slope: As needed to match elevations of in-flow and out-flow pipes.

2. Benches: Concrete, sloped to drain into channel.

a. Slope: 4 percent.

D. Ballast and Pipe Supports: Portland cement design mix, 3000 psi minimum, with 0.58 maximum water/cementitious materials ratio.

1. Reinforcing Fabric: ASTM A 185/A 185M, steel, welded wire fabric, plain. 2. Reinforcing Bars: ASTM A 615/A 615M, Grade 60 (420 MPa) deformed steel.

2.5 FLARED END SECTION WITH TRASH GUARD

A. Flared End Section with Trash Guard: Reinforced concrete apron complying with the City of Roseville Standard Details included in the Plans.

2.6 BEDDING

A. Crushed rock for pipe bedding shall be clean material between 1-1/2 inch and 3 inch size.

B. Provisions of Mn/DOT Specifications 3149.2D shall apply for pipe bedding and for granular trench backfill, except that no salvaged bituminous or crushed concrete will be allowed.


Specifications


2.7 TRENCH DRAINS

A. Trench: Rectangular concrete, formed to fit frame. Follow frame manufacturer forming and material details and recommendations.

B. Frame: Neenah R-4990-AX, 8-inch width, with Type D solid lid or equivalent meeting ASTM-A48, Class 35-B gray iron for heavy-duty use. See Plans for solid lid extents.

PART 3 - EXECUTION

3.1 EARTHWORK

A. Excavation, trenching, and backfilling are specified in Section 312000 "Earth Moving."


A. General Locations and Arrangements: Drawing plans and details indicate general location and arrangement of underground storm drainage piping. Location and arrangement of piping layout take into account design considerations. Install piping as indicated, to extent practical. Where specific installation is not indicated, follow piping manufacturer's written instructions.

B. Install piping beginning at low point, true to grades and alignment indicated with unbroken continuity of invert. Place bell ends of piping facing upstream. Install gaskets, seals, sleeves, and couplings according to manufacturer's written instructions for use of lubricants, cements, and other installation requirements.

C. Install manholes for changes in direction unless fittings are indicated. Use fittings for branch connections unless direct tap into existing sewer is indicated.

D. Install proper size increasers, reducers, and couplings where different sizes or materials of pipes and fittings are connected. Reducing size of piping in direction of flow is prohibited.

E. When installing pipe under streets or other obstructions that cannot be disturbed, use pipe-jacking process of microtunneling.

1. The Contractor may use standard trench construction methods for the pipe crossing Chalet Road unless otherwise specified by the Engineer.

F. Install gravity-flow, nonpressure drainage piping according to the following:

1. Install piping pitched down in direction of flow at the grades necessary to provide a constant slope for the invert elevations specified.

a. Check alignment and grade per MnDOT Standard Specifications for Construction, 2014 Edition.

2. Install PVC sewer piping according to ASTM D 2321 and ASTM F 1668. 3. Install reinforced-concrete sewer piping according to ASTM C 1479 and ACPA's

"Concrete Pipe Installation Manual."


Specifications



A. Join gravity-flow, nonpressure drainage piping according to the following:

1. Join PVC sewer piping according to ASTM D 2321 and ASTM D 3034 for elastomeric-seal joints or ASTM D 3034 for elastomeric-gasketed joints.

2. Join reinforced-concrete sewer piping according to MnDOT Standard Specifications 2503 and Plate 3006G

B. All joints and connections in the storm sewer system shall be gastight and watertight.

3.4 CATCH BASIN/CATCH BASIN MAHOLE/DROP INLET INSTALLATION

A. General: Install manholes, complete with appurtenances and accessories indicated.

B. Comply with MnDOT Standard Specifications for Construction, latest edition.

C. Construct catch basins to sizes and shapes indicated.

1. Set bases on a minimum 6 inches of clean sand or foundation material.

D. Measurement and payment at the contract price shall include connecting to existing pipes and back fill in accordance to MnDOT specifications.

E. Set frames and grates to elevations indicated (1.5 to 2” below finished grade).

1. Catch basin drop inlets located in rain gardens are intended to be set above the basin bottom to encourage infiltration into the soil.

F. Encase casting and concrete adjusting rings in a concrete collar according to MnDOT Standard Plate 4026A.

1. Concrete collar: Use concrete curb and gutter mix or MnDOT Standard Specification 2506.2B mortar mix.

G. Measurement and payment for the casting assemblies, including adjustment to finished grade and the concrete collar, shall be included with the new catch basin or manhole at the contract price. New casting assemblies furnished and installed for existing manholes or catch basins shall be measured separately and the contract price shall include adjustment to final grade.

3.5 CONNECTIONS

A. Connect nonpressure, gravity-flow drainage piping in building's storm building drains specified in Section 221413 "Facility Storm Drainage Piping."

B. All joints and connections in the storm sewer system shall be gastight and watertight.

C. Make connections to existing piping and underground manholes.

1. Use commercially manufactured wye fittings for piping branch connections. Remove section of existing pipe; install wye fitting into existing piping; and encase entire wye


Specifications


fitting, plus 6-inch overlap, with not less than 6 inches of concrete with 28-day compressive strength of 3000 psi.

2. Make branch connections from side into existing piping, NPS 4 to NPS 20. Remove section of existing pipe, install wye fitting into existing piping, and encase entire wye with not less than 6 inches of concrete with 28-day compressive strength of 3000 psi.

3. Make branch connections from side into existing piping, NPS 21 or larger, or to underground manholes and structures by cutting into existing unit and creating an opening large enough to allow 3 inches of concrete to be packed around entering connection. Cut end of connection pipe passing through pipe or structure wall to conform to shape of and be flush with inside wall unless otherwise indicated. On outside of pipe, manhole, or structure wall, encase entering connection in 6 inches of concrete for minimum length of 12 inches to provide additional support of collar from connection to undisturbed ground.

a. Use concrete that will attain a minimum 28-day compressive strength of 3000 psi unless otherwise indicated.

b. Use epoxy-bonding compound as interface between new and existing concrete and piping materials.

4. Protect existing piping, manholes, and structures to prevent concrete or debris from entering while making tap connections. Remove debris or other extraneous material that may accumulate.

D. Connect subsurface drains from parking lots, biofiltration basins, and foundation drains to manholes or catch basins by core-drilling or precast holes. Use resilient rubber joints to make clean, water-tight connections.

3.6 IDENTIFICATION

A. Comply with the requirements in Section 312000 "Earth Moving." Arrange for installation of green warning tape directly over piping and at outside edge of underground structures.

1. Use detectable warning tape over ferrous piping. 2. Use detectable warning tape over nonferrous piping and over edges of underground

structures.


A. Inspect interior of piping to determine whether line displacement or other damage has occurred. Inspect after approximately 24 inches of backfill is in place, and again at completion of Project.

1. Submit separate reports for each system inspection. 2. Perform deflection testing per “Standard Utilities Specifications” as published by the City

Engineer’s Association of Minnesota. 3. Defects requiring correction include the following:

a. Alignment: Less than full diameter of inside of pipe is visible between structures. b. Deflection: Flexible piping with deflection that prevents passage of ball or cylinder

of size not less than 92.5 percent of piping diameter. c. Damage: Crushed, broken, cracked, or otherwise damaged piping. d. Infiltration: Water leakage into piping. e. Exfiltration: Water leakage from or around piping.


Specifications


4. Replace defective piping using new materials, and repeat inspections until defects are within allowances specified.

5. Reinspect and repeat procedure until results are satisfactory.

B. Test new piping systems, and parts of existing systems that have been altered, extended, or repaired, for leaks and defects.

1. Do not enclose, cover, or put into service before inspection and approval. 2. Test completed piping systems according to requirements of authorities having

jurisdiction.3. Schedule tests and inspections by authorities having jurisdiction with at least 24 hours'

advance notice. 4. Submit separate report for each test. 5. Gravity-Flow Storm Drainage Piping: Test according to requirements of authorities having

jurisdiction, UNI-B-6, and the following:

a. Option: Test plastic piping according to ASTM F 1417. b. Option: Test concrete piping according to ASTM C 924.

C. Leaks and loss in test pressure constitute defects that must be repaired.

D. Replace leaking piping using new materials, and repeat testing until leakage is within allowances specified.

3.8 CLEANING

A. Clean interior of piping of dirt and superfluous materials. Flush with water. All dirt and debris shall be prevented from entering the downstream storm sewer system by means of watertight plugs or suitable methods.

END OF SECTION


Specifications

SUBDRAINAGE PIPING 33 4616-1

SECTION 33 4616

SUBDRAINAGE PIPING

PART 1 - GENERAL



B. MnDOT Standard Specifications for Construction, 2005 Edition.

C. Section 334100 “Storm Utility Drainage Piping” for installation of storm drainage pipes and the overflow structures draining the rain gardens.

1.02 SUMMARY


1. Perforated-wall pipe and fittings. 2. Fine Filter Aggregate (Modified)

1.03 SUBMITTALS

A. Product Data:

1. Perforated pipe and fittings.

B. Provide the name of the supplier, location of all materials, and samples of the following one month prior to delivery of materials to the site:

1. Fine Filter Aggregate (Modified) (1-gallon sample).

C. Material Test Reports: From a qualified testing agency indicating and interpreting test results for compliance of the following with requirements indicated:

1. Fine Filter Aggregate (Modified) particle size distribution.


A. Protect the rain garden soils from compaction when excavating for the subsurface drains.

B. Use only tracked vehicles within the rain garden areas.


Specifications


PART 2 - PRODUCTS

2.01 PERFORATED-WALL PIPES AND FITTINGS

A. Perforated PE Pipe and Fittings, NPS 6:

1. Comply with MnDOT Specification 2502. 2. Provide Corrugated Polyethylene Drainage Tubing with uniform slot perforations in

accordance with MnDOT Specification 3278.

a. Drilled holes are not allowed.

3. Couplings: Manufacturer's standard, band type. 4. Fittings: Comply with MnDOT Specification 3278 and ASTM D3212.

2.02 FILTER AGGREGATE

A. Description: An aggregate material for use around subsurface drains to act as a free-draining separation between the soil and the perforated pipe.

B. Fine Filter Aggregate (Modified): Meet the requirements of MnDOT 3149.2J.2 with the following added requirements:

1. Not more than 35 percent shall pass the No. 10 sieve. 2. Not more than 5 percent shall pass the No. 40 sieve.

C. Thickness: 4 inch minimum thickness surrounding perforated pipe.

PART 3 - EXECUTION

3.01 EXAMINATION

A. Examine surfaces and areas for suitable conditions where subdrainage systems are to be installed.

B. If subdrainage is required for landscaping, locate and mark existing utilities, underground structures, and aboveground obstructions before beginning installation and avoid disruption and damage of services.


3.02 EARTHWORK

A. Excavating, trenching, and backfilling are specified in Division 31 Section "Earth Moving".


Specifications


3.03 LANDSCAPING DRAINAGE INSTALLATION

A. Provide trench width to allow installation of filter aggregate and subsurface drain. Grade bottom of trench excavations with a minimum 0.3 percent slope, and compact to firm, solid bed for drainage system.

B. Place supporting layer of Fine Filter Aggregate (Modified) course over compacted subgrade, to compacted depth of not less than 4 inches, to provide a continuous filter with no gaps or mixing of soil into the aggregate.

C. Install drainage conduits as indicated in Part 3 "Piping Installation" Article for landscaping subdrainage with horizontal distance of at least 6 inches between conduit and trench walls.

D. Add Fine Filter Aggregate (Modified) course to sides and top of subsurface drains.

E. The aggregate must be inspected and approved by the Engineer prior to covering with soil.

1. If the Engineer deems that the aggregate has been contaminated, the Contractor will remove the contaminated material and replace with clean aggregate to the Engineer’s satisfaction at the Contractor’s expense.

F. After satisfactory testing, fill to Grade: Place satisfactory soil fill material over drainage course.

1. Compact soil only enough to limit settlement and remain flush with adjacent soil. The soil is intended to provide stormwater treatment by allowing water to infiltrate through soil into perforated pipe.


A. Install piping beginning at low points of system, true to grades and alignment indicated, with unbroken continuity of invert. Bed piping with full bearing in filtering material. Install gaskets, seals, sleeves, and couplings according to manufacturer's written instructions and other requirements indicated.

1. Landscaping Subdrainage: Install piping pitched down in direction of flow, at a minimum slope of 0.3 percent and with a minimum cover of 24 inches unless otherwise indicated.

2. Lay perforated pipe with perforations down. 3. Excavate recesses in trench bottom for bell ends of pipe. Lay pipe with bells facing

upslope and with spigot end entered fully into adjacent bell.

B. Use increasers, reducers, and couplings made for different sizes or materials of pipes and fittings being connected. Reduction of pipe size in direction of flow is prohibited.


A. Join perforated PE pipe and fittings with couplings according to ASTM D 3212 with loose banded, coupled, or push-on joints.

B. Special Pipe Couplings: Join piping made of different materials and dimensions with special couplings made for this application. Use couplings that are compatible with and fit materials and dimensions of both pipes.


Specifications


3.06 CONNECTIONS

A. Comply with requirements for piping specified in Division 33 Section "Storm Utility Drainage Piping". Drawings indicate general arrangement of piping, fittings, and specialties.

1. Core-drill holes to provide connections to catch basin drop inlets. Joints shall be water-tight.


A. Tests and Inspections:

1. After installing drainage course to top of piping, test drain piping with water to ensure free flow before backfilling.

2. Remove obstructions, replace damaged components, and repeat test until results are satisfactory.

B. Drain piping will be considered defective if it does not pass tests and inspections.

C. Prepare test and inspection reports.

3.08 CLEANING

A. Clear interior of installed piping and structures of dirt and other superfluous material as work progresses. Maintain swab or drag in piping and pull past each joint as it is completed. Place plugs in ends of uncompleted pipe at end of each day or when work stops.

END OF SECTION

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