SECTION 21 05 00 - COMMON WORK RESULTS FOR FIRE …...COMMON WORK RESULTS FOR FIRE SUPPRESSION 21 05...

COMMON WORK RESULTS FOR FIRE SUPPRESSION 21 05 00 - 1

SECTION 21 05 00 - COMMON WORK RESULTS FOR FIRE SUPPRESSION

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.

1.2 SUMMARY

A. This Section includes the following:

1. Piping materials and installation instructions common to most piping systems.

2. Mechanical sleeve seals.

3. Sleeves.

4. Escutcheons.

5. Equipment installation requirements common to equipment sections.

6. Painting and finishing.

7. Supports and anchorages.

8. Pipe pressure tests.

1.3 DEFINITIONS

A. Finished Spaces: Spaces other than mechanical and electrical equipment rooms, furred

spaces, pipe chases, unheated spaces immediately below roof, spaces above ceilings,

unexcavated spaces, crawlspaces, and tunnels.

B. Exposed, Interior Installations: Exposed to view indoors. Examples include finished

occupied spaces and mechanical equipment rooms.

C. Exposed, Exterior Installations: Exposed to view outdoors or subject to outdoor ambient

temperatures and weather conditions. Examples include rooftop locations.

D. Concealed, Interior Installations: Concealed from view and protected from physical contact

by building occupants. Examples include above ceilings and in chases.

E. Concealed, Exterior Installations: Concealed from view and protected from weather

conditions and physical contact by building occupants but subject to outdoor ambient

temperatures. Examples include installations within unheated shelters.

F. The following are industry abbreviations for rubber materials:

1. EPDM: Ethylene-propylene-diene terpolymer rubber.

1.4 SUBMITTALS

A. Product Data: For the following:

1. Mechanical sleeve seals.

2. Escutcheons.

B. Welding certificates.


1.5 QUALITY ASSURANCE

A. Steel Support Welding: Qualify processes and operators according to AWS D1.1,

"Structural Welding Code--Steel."

B. Steel Pipe Welding: Qualify processes and operators according to ASME Boiler and

Pressure Vessel Code: Section IX, "Welding and Brazing Qualifications."

1. Comply with provisions in ASME B31 Series, "Code for Pressure Piping."

2. Certify that each welder has passed AWS qualification tests for welding processes

involved and that certification is current.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Deliver pipes and tubes 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.

1.7 COORDINATION

A. Arrange for pipe spaces, chases, slots, and openings in building structure during progress of

construction, to allow for fire-suppression installations.

B. Coordinate installation of required supporting devices and set sleeves in poured-in-place

concrete and other structural components as they are constructed.

C. Coordinate requirements for access panels and doors for fire-suppression items requiring

access that are concealed behind finished surfaces. Access panels and doors are specified in

Division 08 Section "Access Doors and Frames."

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. In other Part 2 articles where subparagraph titles below introduce lists, the following

requirements apply for product selection:

1. Available Manufacturers: Subject to compliance with requirements, manufacturers

offering products that may be incorporated into the Work include, but are not limited

to, the manufacturers specified.

2.2 PIPE, TUBE, AND FITTINGS

A. Refer to individual Division 21 piping Sections for pipe, tube, and fitting materials and

joining methods.

B. Pipe Threads: ASME B1.20.1 for factory-threaded pipe and pipe fittings.

2.3 JOINING MATERIALS

A. Refer to individual Division 21 piping Sections for special joining materials not listed

below.

B. Pipe-Flange Gasket Materials: Suitable for chemical and thermal conditions of piping

system contents.

1. ASME B16.21, nonmetallic, flat, asbestos-free, 1/8-inch maximum thickness unless

thickness or specific material is indicated.


a. Full-Face Type: For flat-face, Class 125, cast-iron and cast-bronze flanges.

b. Narrow-Face Type: For raised-face, Class 250, cast-iron and steel flanges.

2. AWWA C110, rubber, flat face, 1/8 inch thick, unless otherwise indicated; and full-

face or ring type, unless otherwise indicated.

C. Flange Bolts and Nuts: ASME B18.2.1, carbon steel, unless otherwise indicated.

D. Welding Filler Metals: Comply with AWS D10.12 for welding materials appropriate for

wall thickness and chemical analysis of steel pipe being welded.

2.4 MECHANICAL SLEEVE SEALS

A. Description: Modular sealing element unit, designed for field assembly, to fill annular

space between pipe and sleeve.

1. Available Manufacturers:

a. Metraflex Co.

b. Pipeline Seal and Insulator, Inc.

B. Sealing Elements: EPDM interlocking links shaped to fit surface of pipe. Include type and

number required for pipe material and size of pipe.

C. Pressure Plates: Stainless steel. Include two for each sealing element.

D. Connecting Bolts and Nuts: Stainless steel of length required to secure pressure plates to

sealing elements. Include one for each sealing element.

2.5 SLEEVES

A. Galvanized-Steel Sheet: 0.0239-inch minimum thickness; round tube closed with welded

longitudinal joint.

B. Steel Pipe: ASTM A 53, Type E, Grade B, Schedule 40, galvanized, plain ends.

C. Cast Iron: Cast or fabricated "wall pipe" equivalent to ductile-iron pressure pipe, with plain

ends and integral waterstop, unless otherwise indicated.

D. Stack Sleeve Fittings: Manufactured, cast-iron sleeve with integral clamping flange.

Include clamping ring and bolts and nuts for membrane flashing.

2.6 ESCUTCHEONS

A. Description: Manufactured wall and ceiling escutcheons and floor plates, with an ID to

closely fit around pipe, tube, and insulation of insulated piping and an OD that completely

covers opening.

B. One-Piece, Deep-Pattern Type: Deep-drawn, box-shaped brass with polished chrome-plated

finish.

C. One-Piece, Cast-Brass Type: With set screw.

1. Finish: Polished chrome-plated.

D. Split-Casting, Cast-Brass Type: With concealed hinge and set screw.

1. Finish: Polished chrome-plated.

E. One-Piece, Floor-Plate Type: Cast-iron floor plate.

F. Split-Casting, Floor-Plate Type: Cast brass with concealed hinge and set screw.


2.7 GROUT

A. Description: ASTM C 1107, Grade B, nonshrink and nonmetallic, dry hydraulic-cement

grout.

1. Characteristics: Post-hardening, volume-adjusting, nonstaining, noncorrosive,

nongaseous, and recommended for interior and exterior applications.

2. Design Mix: 5000-psi, 28-day compressive strength.

3. Packaging: Premixed and factory packaged.

PART 3 - EXECUTION

3.1 PIPING SYSTEMS - COMMON REQUIREMENTS

A. Install piping according to the following requirements and Division 21 Sections specifying

piping systems.

B. Drawing plans, schematics, and diagrams indicate general location and arrangement of

piping systems. Indicated locations and arrangements were used to size pipe and calculate

friction loss, expansion, pump sizing, and other design considerations. Install piping as

indicated unless deviations to layout are required at the jobsite.

C. Install piping in concealed locations, unless otherwise indicated and except in equipment

rooms and service areas.

D. Install piping indicated to be exposed and piping in equipment rooms and service areas at

right angles or parallel to building walls. Diagonal runs are prohibited unless specifically

indicated otherwise.

E. Install piping above accessible ceilings to allow sufficient space for ceiling panel removal.

F. Install piping to permit valve servicing.

G. Install piping at indicated slopes.

H. Install piping free of sags and bends.

I. Install fittings for changes in direction and branch connections.

J. Install piping to allow application of insulation.

K. Select system components with pressure rating equal to or greater than system operating

pressure.

L. Install escutcheons for penetrations of walls, ceilings, and floors according to the following:

1. New Piping:

a. Piping with Fitting or Sleeve Protruding from Wall: One-piece, deep-pattern

type.

b. Bare Piping at Wall and Floor Penetrations in Finished Spaces: One-piece,

cast-brass type with polished chrome-plated finish.

c. Bare Piping at Ceiling Penetrations in Finished Spaces: One-piece or split-

casting, cast-brass type with polished chrome-plated finish.

d. Bare Piping in Unfinished Service Spaces: One-piece, cast-brass type with

polished chrome-plated finish.

e. Bare Piping in Equipment Rooms: One-piece, stamped-steel type with set

screw or spring clips.


f. Bare Piping at Floor Penetrations in Equipment Rooms: One-piece, floor-plate

type.

M. Install sleeves for pipes passing through concrete and masonry walls, gypsum-board

partitions, and concrete floor and roof slabs.

1. Cut sleeves to length for mounting flush with both surfaces.

a. Exception: Extend sleeves installed in floors of mechanical equipment areas,

plumbing chases or other wet areas 2 inches above finished floor level.

N. Install sleeves in new walls and slabs as new walls and slabs are constructed.

1. Steel Pipe Sleeves: For pipes smaller than NPS 6.

2. Steel Sheet Sleeves: For pipes NPS 6 and larger, penetrating gypsum-board

partitions.

3. Stack Sleeve Fittings: For pipes penetrating floors with membrane waterproofing.

Secure flashing between clamping flanges. Install section of cast-iron soil pipe to

extend sleeve to 2 inches above finished floor level. Refer to Division 07 Section

"Sheet Metal Flashing and Trim" for flashing.

a. Seal space outside of sleeve fittings with grout.

O. Except for underground wall penetrations, seal annular space between sleeve and pipe or

pipe insulation, using joint sealants appropriate for size, depth, and location of joint. Refer

to Division 07 Section "Joint Sealants" for materials and installation.

P. Aboveground, Exterior-Wall Pipe Penetrations: Seal penetrations using sleeves and

mechanical sleeve seals. Select sleeve size to allow for 1-inch annular clear space between

pipe and sleeve for installing mechanical sleeve seals.

1. Install steel pipe for sleeves smaller than 6 inches in diameter.

2. Install cast-iron "wall pipes" for sleeves 6 inches and larger in diameter.

3. Mechanical Sleeve Seal Installation: Select type and number of sealing elements

required for pipe material and size. Position pipe in center of sleeve. Assemble

mechanical sleeve seals and install in annular space between pipe and sleeve.

Tighten bolts against pressure plates that cause sealing elements to expand and make

watertight seal.

Q. Underground, Exterior-Wall Pipe Penetrations: Install cast-iron "wall pipes" for sleeves.

Seal pipe penetrations using mechanical sleeve seals. Select sleeve size to allow for 1-inch

annular clear space between pipe and sleeve for installing mechanical sleeve seals.

1. Mechanical Sleeve Seal Installation: Select type and number of sealing elements

required for pipe material and size. Position pipe in center of sleeve. Assemble

mechanical sleeve seals and install in annular space between pipe and sleeve.

Tighten bolts against pressure plates that cause sealing elements to expand and make

watertight seal.

R. Fire-Barrier Penetrations: Maintain indicated fire rating of walls, partitions, ceilings, and

floors at pipe penetrations. Seal pipe penetrations with firestop materials. Refer to

Division 07 Section "Penetration Firestopping" for materials.

S. Verify final equipment locations for roughing-in.

T. Refer to equipment specifications in other Sections of these Specifications for roughing-in

requirements.


3.2 PAINTING

A. Painting of fire-suppression systems, equipment, and components is specified in Division 09

Sections "Interior Painting" and "Exterior Painting."

B. Damage and Touchup: Repair marred and damaged factory-painted finishes with materials

and procedures to match original factory finish.

3.3 ERECTION OF METAL SUPPORTS AND ANCHORAGES

A. Refer to Division 05 Section "Metal Fabrications" for structural steel.

B. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and

elevation to support and anchor fire-suppression materials and equipment.

C. Field Welding: Comply with AWS D1.1.

3.4 PIPE PRESSURE TESTS

A. Hydrostatically test fire protection piping as required in most recent edition of NFPA 13.

Pressure gauges used should have a range no greater than 50% over test pressure.

B. Where leaks occur, the pipe shall be repaired and the tests repeated. No leaks shall be

corrected by peening. Defective piping and joints shall be removed and replaced.

END OF SECTION 21 05 00

WET-PIPING SPRINKLER SYSTEMS 21 13 13 - 1

SECTION 21 13 13 - WET-PIPING SPRINKLER SYSTEMS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 1 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes the following fire-suppression piping inside the building:

1. Wet-pipe sprinkler systems.

B. Related Sections include the following:

1. Division 28 Section "Fire Alarm System" for alarm devices not specified in this

Section.

2. Division 7 Section “Through-Penetration Firestop Systems” for fire suppression

piping penetrations through fire-resistance-rated constructions.

1.3 SYSTEM DESCRIPTIONS

A. Wet-Pipe Sprinkler System: Automatic sprinklers are attached to piping containing water

and that is connected to water supply. Water discharges immediately from sprinklers when

they are opened. Sprinklers open when heat melts fusible link or destroys frangible device.

Hose connections are included if indicated.

1.4 PERFORMANCE REQUIREMENTS

A. Standard Piping System Component Working Pressure: Listed for at least 175 psig.

B. Fire-suppression sprinkler system design shall be approved by authorities having

jurisdiction.

1. The design and installation of the automatic sprinkler systems and the alarm and

supervisory systems shall be in strict accordance with all mandatory and

recommended provisions of the NFPA, Industrial Risk Insurance (IRI), UL

publications, International Building Code (2012). All recommended provisions of the

NFPA (National Fire Codes) listed below shall be considered as mandatory

requirements.

2. Margin of Safety for Available Water Flow and Pressure: 10 psi or 10%, whichever

is greater, including losses through water-service piping, valves, and backflow

preventers.

3. Sprinkler Occupancy Hazard Classifications:

a. Building Service Areas: Ordinary Hazard, Group 1.

b. Electrical Equipment Rooms: Ordinary Hazard, Group 1.

c. General Storage Areas: Ordinary Hazard, Group 1.

d. Laboratories: Ordinary Hazard, Group 1or Group 2; depending on NFPA 45

classification.

e. Mechanical Equipment Rooms: Ordinary Hazard, Group 1.

f. Office and Public Areas: Light Hazard.

4. Minimum Density for Automatic-Sprinkler Piping Design:

a. Ordinary-Hazard, Group 1 Occupancy: 0.15 gpm over 1500-sq. ft..

b. Light Hazard Occupancy: 0.10 gpm/sq.ft.


c. Maximum Protection Area per Sprinkler: Per UL listing.

5. Maximum Protection Area per Sprinkler:

a. Storage Areas: 130 sq. ft..

b. Mechanical Equipment Rooms: 130 sq. ft..

c. Electrical Equipment Rooms: 130 sq. ft..

d. Other Areas: According to NFPA 13 recommendations, unless otherwise

indicated.

1.5 SUBMITTALS

A. Product Data: For the following:

1. Piping materials, including sprinkler specialty fittings.

2. Pipe hangers and supports .

3. Valves, including listed fire-protection valves, unlisted general-duty valves, and

specialty valves and trim.

4. Sprinklers, escutcheons, and guards. Include sprinkler flow characteristics, mounting,

finish, and other pertinent data.

5. Fire department connections, including type; number, size, and arrangement of inlets;

caps and chains; size and direction of outlet; escutcheon and marking; and finish.

6. Alarm devices, including electrical data.

B. Shop Drawings: Submit detailed working drawings in accordance with NFPA 13 for

approval prior to fabrication of piping. Provide a layout and details sufficient to indicate the

coordination of the location of sprinkler heads and piping with the ceiling configuration and

with the relocation of luminaries and interchangeability of ceiling components. Design shall

be based upon actual survey of the building and shall indicate coordination with existing

architectural, structural, mechanical, electrical and plumbing conditions. Submit a

statement from the sprinkler subcontractor certifying that the design meets the requirements

of NFPA 13 and the hydraulic design parameters stated in this specification. The drawings

shall be on uniform size sheets no smaller than the Contract Drawings.

C. Hydraulic Calculations: Submit hydraulic calculations as part of the shop drawings. Field

test reports and certificates. Prepare hydraulic calculations in accordance with NFPA 13

and the following:

1. Minimum operating pressure of any sprinkler shall be according to NFPA 13 and UL

listing/FM approval.

2. Pipe friction losses may be calculated by using the nearest foot for all piping over one

foot in lengths. Horizontal lengths less than one foot may be neglected. Vertical

length less than foot shall be included for elevation purposes only.

3. Flows shall be calculated to the nearest whole gallon.

4. Velocity pressures may be neglected.

5. Velocities in all piping shall not exceed 20 feet per second. Velocities in standpipes

must be calculated based on the combined sprinkler flow and hose flow.

6. Total sprinkler system flow shall not exceed 110 percent of the required flow.

7. The sprinkler/standpipe risers shall accommodate both the sprinkler and standpipe

hose stream flows. Each riser shall accommodate 250 gallons per minute flow for

standpipe hose stream.

D. Fire-hydrant flow test report.

E. Approved Sprinkler Piping Drawings: Working plans, prepared according to NFPA 13, that

have been approved by authorities having jurisdiction, including hydraulic calculations.


F. Field Test Reports and Certificates: Indicate and interpret test results for compliance with

performance requirements and as described in NFPA 13. Include "Contractor's Material and

Test Certificate for Aboveground Piping" and "Contractor's Material and Test Certificate for

Underground Piping."

G. Welding certificates.

H. Field quality-control test reports.

I. Operation and Maintenance Data: For sprinkler specialties to include in emergency,

operation, and maintenance manuals.

J. Final As-Constructed Documents:

1. In addition to any requirements stated in the project’s Uniform General/

Supplemental General and Additional General Conditions, provide at completion of

installation, a record set of shop drawings, in CADD format, that includes all changes

made during the installation and with locations of all drains clearly marked (if

applicable). Provide copies of all State required testing reports to include hydrostatic

testing, contractor testing, and third party testing (if applicable).

2. Additionally, provide copies of all overhead inspection reports related to sprinkler

installation with dates, comments made, as well as dates corrected (can be supplied in

disk format or hard copies).

1.6 QUALITY ASSURANCE

A. Installer Qualifications:

1. Company specializing in performing work for this project shall have a minimum of

three years related experience, and shall have a sprinkler designer with a minimum

NICET Level III certification to supervise completion of the design of this work.

2. Contractor shall be licensed to complete sprinkler installation by the State of Texas.

3. Contractor for the work under this section shall be a specialist in this field and have

the personal experience, training, skill and the organization to furnish and install a

practical working system. If required, the Contractor shall furnish acceptable

evidence of having contracted for and installed not less than three systems of

comparable size and type to this one, that have served their Owners satisfactorily for

not less than three years.

4. Adequate and competent supervision shall be provided to ensure first class

workmanship and installation. All field installation work shall be continuously

supervised by a NICET Level II or III sprinkler system technician.

5. Contractor shall be responsible for all construction techniques required for all fire

protection systems specified and shown on the drawings. Work shall be performed

by mechanics skilled in the trade.

6. Contractor shall hold a Certificate of Registration from The State Fire Marshal per

the Texas State Sprinkler Rules and Article 5.43-3 Insurance Code. Provide copy of

license with bid.

7. Contractor shall be responsible for providing Responsible Managing Employee

(R.M.E.) signature and R.M.E. number on shop drawings. Provide R.M.E. license

and experience for review.

B. Welding: Qualify processes and operators according to ASME Boiler and Pressure Vessel

Code: Section IX.


C. Reference Standards: Fire-suppression-system equipment, specialties, accessories,

installation, and testing shall comply with the following:

1. 2013 NFPA 13, "Installation of Sprinkler Systems."

2. NFPA 24, "Installation of Private Fire Service Mains and Their Appurtenances."

1.7 COORDINATION

A. Coordinate layout and installation of sprinklers with other construction that penetrates

ceilings, including light fixtures, HVAC equipment, and partition assemblies.

B. Through-Penetration Firestop Systems Coordination:

1. Coordinate construction of openings and penetrating items to ensure that through-

penetration firestop systems are installed according to specified requirements.

2. Coordinate sizing of sleeves, openings, core-drilled holes, or cut openings to

accommodate through-penetration firestop systems.

1.8 EXTRA MATERIALS

A. Furnish extra materials described below that match products installed and that are packaged

with protective covering for storage and identified with labels describing contents.

1. Sprinkler Cabinets: Finished, wall-mounting, steel cabinet with hinged cover, with

space for minimum of six spare sprinklers plus sprinkler wrench. Include number of

sprinklers required by NFPA 13 and sprinkler wrench. Include separate cabinet with

sprinklers and wrench for each type of sprinkler on Project.

1.9 CLOSEOUT SUBMITTALS

A. As specified in Division 1, Section 01 77 00 “Closeout Procedures”.

B. As-Built Drawings: Upon completion of the work, the Contractor shall revise the original

shop drawings to agree with the construction as actually accomplished. Prepare and submit

4 sets of the as-built drawings.

1. The drawings shall include all information as required by NFPA 13.

2. The drawings shall also show the system as installed including all deviations from the

approved shop drawings.

3. The drawings shall be on uniform size sheets no smaller than the Contract Drawings

(Minimum 30 inches by 42 inches).

4. The drawings shall be prepared using AutoCAD 2000 or later. An electronic copy on

CD shall be provided.

5. Final testing shall be conducted after receipt of the as-built drawings.

C. Submit four sets of final hydraulic calculations, manufacturer’s data sheets, Authority

Having Jurisdiction acceptance and NFPA certificates.

1.10 OPERATIONS AND MAINTENANCE

A. Submit under provisions of Section 01 78 23 “Operation and Maintenance Data” for all new

parts and/or equipment installed.

B. At the completion of the work, provide a small scale plan, not less than 11” x 17”, of the

building indicating the locations of all control valves, low point drains, and inspector’s test

valves. The plans shall be neatly drawn and color coded to indicate the portion of the

building protected by each system, framed under glass and permanently mounted on a wall

in a visible location in the sprinkler valve room, or where there is no designated valve room,

in the mechanical room where the incoming water line enters the building.


C. Provide in the O&M Manual the as-built drawings, product data, copies of all required test

data, and copies of all overhead inspection reports pertaining to fire and life safety issues

including date of all deficiencies and date deficiencies were corrected with “sign-off”

signature.

D. Furnish three (3) original copies of NFPA 25 and bound sets of printed operating and

maintenance instructions to the Owner, and adequately instruct the owner’s maintenance

personnel in proper operation and test procedures of all fire protection components

provided, furnished, or installed by Sprinkler Contractor. Photocopies of NFPA 25 will not

be accepted.

E. Include spare parts list with submitted maintenance instructions.

1.11 PROJECT CONDITIONS

A. Damage:

1. Protect all unfinished work to prevent damage and furnish protection of all

surrounding areas where necessary.

B. Leak Damage:

1. The Contractor shall be responsible during the installation and testing periods of the

sprinkler system for any damage to the work of others, to the building or its contents

caused by leaks in any equipment, by unplugged or disconnected pipes or fittings, or

by overflow. The Contractor shall pay for the necessary replacements or repairs to

work of others damaged by such leakage.

2. Water shall not be introduced into the system during conditions where there is danger

of freezing or when the building is not closed and heated.

1.12 WARRANTY

A. The Contractor shall warranty all materials and workmanship for a period of one (1) year

beginning with the date of final acceptance by the Owner.

B. The Contractor shall repair or replace, at no additional cost to the Owner, any part of their

workmanship and materials, which may become defective within the warranty period.

C. The Contractor shall be responsible during the design, installation, testing, and warranty

periods for any damage caused by their (or their subcontractors’) work, materials, or

equipment.

1.13 EMERGENCY SERVICE

A. The Contractor shall provide emergency repair service for the sprinkler system within four

hours of a request for such service by the Owner during the warranty period. This service

shall be available on a 24-hour per day, seven-day per week basis.

1.14 TRAINING

A. The Contractor shall conduct two training sessions of four hours each to familiarize the

building personnel with the features, operation and maintenance of the sprinkler systems.

Training sessions shall be scheduled by the Owner at a mutually agreeable time to the

Contractor and the Owner.


PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. In other Part 2 articles where titles below introduce lists, the following requirements apply

to product selection:

1. Available Manufacturers: Subject to compliance with requirements, manufacturers

offering products that may be incorporated into the Work include, but are not limited

to, manufacturers specified.

2.2 DUCTILE-IRON PIPE AND FITTINGS

A. Mechanical-Joint, Ductile-Iron Pipe: AWWA C151, with mechanical-joint bell end and

plain end.

1. Mechanical-Joint, Ductile-Iron Fittings: AWWA C110, ductile- or gray-iron standard

pattern.

2. Glands, Gaskets, and Bolts: AWWA C111, ductile-or gray-iron gland, rubber gasket,

and steel bolts and nuts.

B. Push-on-Joint, Ductile-Iron Pipe: AWWA C151, with push-on-joint bell end and plain end.

1. Push-on-Joint, Ductile-Iron Fittings: AWWA C110, ductile-or gray-iron standard

pattern.

2. Gaskets: AWWA C111, rubber.

2.3 STEEL PIPE AND FITTINGS

A. Threaded-End, Schedule 40 Steel Pipe: ASTM A 53/A 53M, ASTM A 135, or

ASTM A 795, hot-dip galvanized where indicated and with factory- or field-formed

threaded ends.

1. Malleable-Iron Threaded Fittings: ASME B16.3. Cast iron not acceptable.

2. Steel Threaded Pipe Nipples: ASTM A 733, made of ASTM A 53/A 53M or

ASTM A 106, Schedule 40, seamless steel pipe hot-dip galvanized where indicated.

Include ends matching joining method.

3. Steel Threaded Couplings: ASTM A 865 hot-dip galvanized-steel pipe where

indicated.

4. The use of bushings, unions, and mechanical ‘T’s’ is prohibited.

B. Grooved-End, Schedule 40 Steel Pipe: ASTM A 53/A 53M, ASTM A 135, or

ASTM A 795, hot-dip galvanized where indicated and with factory- or field-formed, roll-

grooved ends. Cut-groove ends not acceptable.

1. Grooved-Joint Piping Systems:

a. Available Manufacturers:

1) Anvil International, Inc.

2) Central Sprinkler Corp.

3) Star Pipe Products; Star Fittings Div.

4) Victaulic Co. of America.

2. Grooved-End Fittings: UL-listed, ASTM A 47, ductile-iron casting with OD

matching steel-pipe OD.

3. Grooved-End-Pipe Couplings: UL 213 and AWWA C606, rigid pattern, unless

otherwise indicated; gasketed fitting matching steel-pipe OD. Include ductile-iron

housing with keys matching steel-pipe and fitting grooves, ASTM D2000 “C”-shaped

prelubricated rubber gasket listed for use with housing, and “ASTM A 183 steel bolts

and nuts with minimum tensile strength of 110,000 psi.


2.4 SPRINKLER SPECIALTY FITTINGS

A. Sprinkler specialty fittings shall be UL listed or FMG approved, with 175-psig minimum

working-pressure rating, and made of materials compatible with piping.

B. Sprinkler Drain and Alarm Test Fittings: Cast- or ductile-iron body; with threaded or

locking-lug inlet and outlet, test valve, and orifice and sight glass.


a. Central Sprinkler Corp.

b. Reliable Automatic Sprinkler Co., Inc.

c. Simplex/Grinnell

d. Viking Corp.

e. Victaulic Co. of America.

C. Sprinkler Branch-Line Test Fittings: Brass body with threaded inlet, capped drain outlet,

and threaded outlet for sprinkler.


a. Elkhart Brass Mfg. Co., Inc.

b. Potter-Roemer; Fire-Protection Div.

D. Floor Control Riser Manifold: Cast- or ductile-iron housing with grooved-end inlet and

outlet, flow switch, pressure gauge and test and drain valve with threaded outlet.




c. Simplex/Grinnell.

E. Inspector’s Test and Drain Valve: 3-way valve with “Off”, “Drain”, and “Test” positions.

Threaded outlet.




2.5 LISTED FIRE-PROTECTION VALVES

A. Valves shall be UL listed or FMG approved, with 175-psig minimum pressure rating.

B. Ball Valves: Comply with UL 1091, except with ball instead of disc.

1. NPS 1-1/2 (DN 40) and Smaller: Bronze body with threaded ends.


a. NIBCO.

C. Butterfly Valves: UL 1091.

1. NPS 2-1/2 and Larger: Bronze, cast-iron, or ductile-iron body; wafer type or with

flanged ends.

2. The use of victaulic-type butterfly control valves is acceptable if valve was

manufactured in 2010 or later. Use of victaulic-type butterfly control valves

manufactured before 2010 is prohibited.


a. Mueller Company.

b. NIBCO.

D. Check Valves NPS 2 and Larger: UL 312, swing type, cast-iron body with flanged or

grooved ends.




b. Clow Valve Co.

c. Crane Co.; Crane Valve Group; Crane Valves.

d. Crane Co.; Crane Valve Group; Jenkins Valves.

e. Globe Fire Sprinkler Corporation.

f. Grinnell Fire Protection.

g. Hammond Valve.

h. Mueller Company.

i. NIBCO.

j. Potter-Roemer; Fire Protection Div.

k. Reliable Automatic Sprinkler Co., Inc.

l. Star Sprinkler Inc.

m. Stockham.

n. United Brass Works, Inc.

o. Victaulic Co. of America.

p. Watts Industries, Inc.; Water Products Div.

E. Gate Valves: UL 262, OS&Y type.

1. NPS 2 and Smaller: Bronze body with threaded ends.


1) Crane Co.; Crane Valve Group; Crane Valves.

2) Hammond Valve.

3) NIBCO.

4) United Brass Works, Inc.

2. NPS 2-1/2 (DN 65) and Larger: Cast-iron body with flanged ends.


1) Clow Valve Co.

2) Crane Co.; Crane Valve Group; Crane Valves.

3) Crane Co.; Crane Valve Group; Jenkins Valves.

4) Hammond Valve.

5) Milwaukee Valve Company.

6) Mueller Company.

7) NIBCO.

8) United Brass Works, Inc.

F. Indicating Valves: UL 1091, with integral indicating device and ends matching connecting

piping.

1. Indicator: Electrical, 115-V ac, prewired, 2-circuit, supervisory switch.

2. NPS 2 (DN 50) and Smaller: Ball or butterfly valve with bronze body and threaded

ends.



2) NIBCO.

3. NPS 2-1/2 and Larger: Butterfly valve with cast- or ductile-iron body; wafer type or

with flanged or grooved ends.

a. The use of victaulic-type butterfly control valves is acceptable if valve was

manufactured in 2010 or later. Use of victaulic-type butterfly control valves

manufactured before 2010 is prohibited.

b. Available Manufacturers:

1) Central Sprinkler Corp.

2) Grinnell Fire Protection.



4) NIBCO.

2.6 UNLISTED GENERAL-DUTY VALVES

A. Ball Valves NPS 2 and Smaller: MSS SP-110, 2-piece copper-alloy body with chrome-

plated brass ball, 600-psig minimum CWP rating, blowout-proof stem, and threaded ends.

B. Check Valves NPS 2 and Smaller: MSS SP-80, Type 4, Class 125 minimum, swing type

with bronze body, nonmetallic disc, and threaded ends.

C. Gate Valves NPS 2 and Smaller: MSS SP-80, Type 2, Class 125 minimum, with bronze

body, solid wedge, and threaded ends.

D. Globe Valves NPS 2 and Smaller: MSS SP-80, Type 2, Class 125 minimum, with bronze

body, nonmetallic disc, and threaded ends.

2.7 SPECIALTY VALVES

A. Pressure-Regulating Valves: UL 1468, brass or bronze, NPS 1-1/2, 400-psig minimum

rating. Include female NPS inlet and outlet, adjustable setting feature, and straight or 90-

degree-angle pattern design as indicated.

1. Finish: Rough metal.


a. Elkhart Brass Mfg. Co., Inc.

b. Grinnell Fire Protection.

c. Potter-Roemer; Fire Protection Div.

d. Zurn Industries, Inc.; Wilkins Div.

2.8 SPRINKLERS

A. Sprinklers shall be UL listed or FMG approved, with 175-psig minimum pressure rating.

Sprinklers with O-ring seals are not acceptable.

B. Available Manufacturers:

1. Central Sprinkler Corp.

2. Grinnell Fire Protection.

3. Reliable Automatic Sprinkler Co., Inc.

4. Star Sprinkler Inc.

5. Victaulic Co. of America.

6. Viking Corp.

C. Automatic Sprinklers: With heat-responsive element complying with the following:

1. UL 199, for nonresidential applications.

2. Solder type fusible link, unless link is fully concealed. Sprinklers with glass-bulb

type fusible link shall not be permitted except where no acceptable alternative is

available. Use of sprinklers with glass-bulb type fusible links shall be approved by

the Owner.

D. Sprinkler Types and Categories: Nominal 1/2-inch orifice for "Ordinary" temperature

classification rating, unless otherwise indicated or required by application.

E. Sprinkler types, features, and options as follows:

1. Concealed ceiling sprinklers, including cover plate.

2. Extended-coverage sprinklers.

3. Pendent sprinklers.


4. Quick-response sprinklers.

5. Sidewall sprinklers.

6. Sidewall, dry-type sprinklers.

7. Upright sprinklers.

F. Sprinkler Finishes: Chrome plated and bronze.

G. Sprinkler Guards: Wire-cage type, UL and IRI approved, including fastening device for

attaching to sprinkler.

2.9 FIRE DEPARTMENT CONNECTIONS

A. Available Manufacturers:

1. Central Sprinkler Corp.

2. Elkhart Brass Mfg. Co., Inc.

3. Guardian Fire Equipment Incorporated.

4. Potter-Roemer; Fire-Protection Div.

5. Reliable Automatic Sprinkler Co., Inc.

6. United Brass Works, Inc.

B. Wall-Type, Fire Department Connection: UL 405, 175-psig minimum pressure rating; with

corrosion-resistant-metal body with brass inlets, brass wall escutcheon plate, brass lugged

caps with gaskets and brass chains, and brass lugged swivel connections. Include inlets with

threads according to NFPA 1963 and matching local fire department sizes and threads,

outlet with pipe threads, extension pipe nipples, check devices or clappers for inlets, and

escutcheon plate with marking similar to "AUTO SPKR & STANDPIPE."

1. Type: Exposed, projecting, with two inlets and round escutcheon plate.

2. Finish: Polished brass.

2.10 ALARM DEVICES

A. Alarm-device types shall match piping and equipment connections.

B. Water-Flow Indicator: UL 346, electrical-supervision, paddle-operated-type, water-flow

detector with 250-psig pressure rating and designed for horizontal or vertical installation.

Include two single-pole, double-throw circuit switches for isolated alarm and auxiliary

contacts, 7 A, 125-V ac and 0.25 A, 24-V dc; complete with factory-set, field-adjustable

retard element to prevent false signals and tamperproof cover that sends signal if removed.


a. Grinnell Fire Protection.

b. ITT McDonnell & Miller.

c. Potter Electric Signal Company.

d. System Sensor.

e. Viking Corp.

f. Watts Industries, Inc.; Water Products Div.

C. Indicator-Post Supervisory Switch: UL 753, electrical, single-pole, double-throw switch

with normally closed contacts. Include design that signals controlled indicator-post valve is

in other than fully open position.


a. Potter Electric Signal Company.

b. System Sensor.


2.11 PRESSURE GAGES

A. Available Manufacturers:

1. AGF Manufacturing Co.

2. AMETEK, Inc.; U.S. Gauge.

3. Brecco Corporation.

4. Dresser Equipment Group; Instrument Div.

5. Marsh Bellofram.

6. WIKA Instrument Corporation.

B. Description: UL 393, 4-1/2-inch- diameter, oil filled, dial pressure gage with range of 0 to

250 psig minimum.

1. Water System Piping: Include caption "WATER" on dial face.

PART 3 - EXECUTION

3.1 PREPARATION

A. Perform fire-hydrant flow test. Use results for system design calculations required in Part 1

"Quality Assurance" Article.

B. Report test results promptly and in writing.

3.2 EARTHWORK

A. Refer to Division 2 Section "Earthwork" for excavating, trenching, and backfilling.

3.3 EXAMINATION

A. Examine roughing-in for risers and hose connections to verify actual locations of piping

connections before installation.

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

3.4 PIPING APPLICATIONS, GENERAL

A. Shop weld pipe joints where welded piping is indicated.

B. Do not use welded joints for galvanized-steel pipe.

C. Flanges, flanged fittings, nipples, and transition and special fittings with finish and pressure

ratings same as or higher than system's pressure rating may be used in aboveground

applications, unless otherwise indicated.

D. Do not use unions in assembling pipe.

E. Do not use bushings to make pipe size changes.

F. Do not use mechanical “T’s” to add branch lines or heads.

G. Snap-on and strapless fittings are not permitted.

H. Piping between Fire Department Connections and Check Valves: Galvanized, standard-

weight steel pipe.

3.5 VALVE APPLICATIONS

A. Drawings indicate valve types to be used. Where specific valve types are not indicated, the

following requirements apply:


1. Listed Fire-Protection Valves: UL listed and FMG approved for applications where

required by NFPA 13 and NFPA 14.

a. Shutoff Duty: Use ball, butterfly, or gate valves.

2. Unlisted General-Duty Valves: For applications where UL-listed and FMG-approved

valves are not required by NFPA 13.

a. Shutoff Duty: Use ball, butterfly, or gate valves.

3.6 JOINT CONSTRUCTION

A. Install couplings, flanges, flanged fittings, unions, nipples, and transition and special fittings

that have finish and pressure ratings same as or higher than system's pressure rating for

aboveground applications unless otherwise indicated.

B. Flanged Joints: Select appropriate gasket material in size, type, and thickness suitable for

water service. Join flanges with gasket and bolts according to ASME B31.9.

C. Threaded Joints: Thread pipe with tapered pipe threads according to ASME B1.20.1. Cut

threads full and clean using sharp dies. Ream threaded pipe ends to remove burrs and

restore full ID. Join pipe fittings and valves as follows:

1. Apply appropriate tape or thread compound to external pipe threads.

2. Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded or

damaged.

D. Steel-Piping, Roll-Grooved Joints: Roll rounded-edge groove in end of pipe according to

AWWA C606. Assemble coupling with housing, gasket, lubricant, and bolts. Join steel

pipe and grooved-end fittings according to AWWA C606 for steel-pipe grooved joints. Cut

grooves are not permitted.

E. Dissimilar-Metal Piping Joints: Construct joints using dielectric fittings compatible with

both piping materials.

1. NPS 2 and Smaller: Use dielectric unions, couplings, or nipples.

2. NPS 2-1/2 to NPS 4: Use dielectric flanges.

3. NPS 5 and Larger: Use dielectric flange insulation kits.

3.7 WATER-SUPPLY CONNECTION

A. Connect fire-suppression piping to existing fire protection system piping where indicated.

B. Install shutoff valve, backflow preventer, pressure gage, drain, and other accessories

indicated at connection to water distribution piping. Refer to Division 22 Section

"Domestic Water Pipe Specialties" for backflow preventers.

3.8 PIPING INSTALLATION

A. Refer to Division 21 Section "Common Work Results for Fire Suppression" for basic piping

installation.

B. Locations and Arrangements: Drawing plans, schematics, and diagrams indicate general

location and arrangement of piping. Install piping as indicated, as far as practical.

1. Deviations from approved shop drawings require written approval from authorities

having jurisdiction. File written approval with Architect before deviating from

approved working plans.

C. Piping Standards: Comply with requirements for installation of sprinkler piping in NFPA

13.


D. All wet sprinkler system piping shall be a minimum of schedule 40 black steel with threaded

fittings for sizes 1 inch and smaller, and black schedule 40 steel with grooved fittings for

sizes larger than 1 inch. All dry and preaction system piping and fittings are required to be

externally and internally galvanized.

E. Piping shall be concealed above suspended ceilings where installed, in a craftsman like

manner, and shall not interfere in the complete function of other systems such as cable trays,

access panels, or pedestrian passageways. Piping in all occupied areas and mechanical area

passageways shall not be lower then 7’-6”. Specific written approval may be granted for

unavoidable projections, but under no circumstance shall overhead piping be installed lower

then 6’-8” above the floor. Piping shall not reduce the required width of any means of

egress, width of stairs, or clear width of a corridor or passageway, to less than 44 inches in

width. Installation of all piping shall be in coordination with piping, ducts, light fixtures,

and any other work that may obstruct sprinklers. The contractor shall coordinate with all

trades having materials installed above the ceiling prior to commencement of any work.

F. All exposed sprinkler and standpipe system pipe located in areas without suspended ceilings

is required to be painted. Prepare galvanized pipe as necessary, such as priming, prior to

painting pipe. All concealed pipe and exposed pipe that is not painted red is required to be

marked “Fire Protection”. Pipe markers must be wrap-around-type with white letters at a

minimum of 1 inch in height. All pipe markers must be visible from the floor. Spacing and

location as follows:

1. Above Ceiling Corridors: Every 20’ for mains. One (1) on each branch line. 2. Above Rooms with Ceilings: One (1) in every room on each branch line. Every 20’

for mains (at least one (1) in each room).

3. Exposed Areas Non-painted Pipe: Every 20’ for mains and branch lines (at least one

(1) on each branch line) and in each room.

4. Exposed Areas Painted Pipe: Pipe markers not required (as long as pipe is painted red

– any other color to follow above.

G. Install underground ductile-iron service-entrance piping according to NFPA 24 and with

restrained joints.

H. Use approved fittings to make changes in direction, branch takeoffs from mains, and

reductions in pipe sizes.

I. Install flanges, flange adapters or couplings for grooved-end piping on valves, apparatus,

and equipment having NPS 2-1/2 and larger connections.

J. Install "Inspector's Test Connections" in sprinkler system piping, complete with shutoff

valve, sized and located according to NFPA 13.

K. Except where noted otherwise on the drawings, install sprinkler piping in areas without

ceilings as high as possible using necessary fittings and auxiliary drains to maintain

maximum clear head room.

L. Install sprinklers as required by NFPA 13 with regard to ducts, obstructions and partitions.

M. Sprig-ups shall be provided wherever necessary to provide proper deflector distances in

accordance with NFPA 13 requirements. Sprinklers on sprig-ups shall be installed as high

as practicable without being considered structurally obstructed. Install a noncombustible

hood or shield to protect important electrical equipment from sprinkler discharge. Such

hood or shield shall not be an obstruction to sprinkler discharge to any other area.

N. Install sprinkler piping with drains for complete system drainage. Install pipe to minimize

the need for auxiliary drains.


O. Install a 1/2-inch garden hose fitting on auxiliary drains.

P. Provide an auxiliary drain consisting of a nipple and cap or a plug at all locations where the

capacity of a trapped section of pipe is less than 5 gallons. Provide an auxiliary drain

consisting of a drain valve at all locations where the capacity of a trapped section of pipe is

greater than 5 gallons.

Q. Install sprinkler zone control valves, test assemblies, and drain risers adjacent to risers.

R. Install drain valves on risers. Extend drains to mechanical room floor drains or outside

building.

S. Install ball drip valves to drain piping between fire department connections and check

valves. Drain to floor drain or outside building.

T. Install alarm devices in piping systems.

U. Hangers and Supports: Comply with NFPA 13 for hanger materials.

1. Install sprinkler system piping according to NFPA 13.

2. Minimize the quantity of hangers supported from concrete ceiling construction in

finished spaces.

3. Support 1-inch through 4-inch pipe below concrete construction with inserts or

mechanical-expansion anchors.

4. Support pipe larger than 4-inch below concrete construction with inserts.

5. Power-driven studs, expansion cases and plastic anchors are prohibited.

6. Supporting sprinkler pipe from mechanical or electrical devices and/or equipment is

prohibited.

V. Install pressure gages on riser or feed main, at each sprinkler test connection. Include

pressure gages with connection not less than NPS 1/4 (DN 8) and with soft metal seated

globe valve, arranged for draining pipe between gage and valve. Install gages to permit

removal, and install where they will not be subject to freezing.

W. Fill wet-pipe sprinkler system piping with water.

3.9 VALVE INSTALLATION

A. Install listed fire-protection valves, unlisted general-duty valves, specialty valves and trim,

controls, and specialties according to NFPA 13 and authorities having jurisdiction.

B. Install listed fire-protection shutoff valves supervised-open, located to control sources of

water supply except from fire department connections. Install permanent identification

signs indicating portion of system controlled by each valve.

C. Install check valve in each water-supply connection. Install backflow preventers instead of

check valves in potable-water supply sources.

3.10 SPRINKLER APPLICATIONS

A. Drawings indicate sprinkler types to be used.

B. In renovation projects, use same manufacturer as is currently installed in adjacent spaces. If

the sprinkler head is no longer available, furnish spare heads and proper wrench in a

sprinkler head cabinet as per NFPA 13.


3.11 SPRINKLER INSTALLATION

A. Install sprinklers in suspended ceilings in center of narrow dimension of acoustical ceiling

panels and tiles.

B. Do not install pendent or sidewall, wet-type sprinklers in areas subject to freezing. Use dry-

type sprinklers with water supply from heated space.

C. Align sprinklers parallel to walls.

D. Position sprinklers minimum of 12-inches horizontally from supply return grilles/registers.

E. Install sprinkler guards on sprinklers within 7-feet of finished floor or wherever sprinkler

may be subject to mechanical damage due to the location, as determined by the Owner.

F. Install sprinkler guards in dorm rooms, janitor’s closets, mechanical rooms, electrical

rooms, or stairways as directed by the Owner.

G. Replace any sprinkler head where sprinkler has had paint applied by other than the sprinkler

manufacturer.

3.12 FIRE DEPARTMENT CONNECTION INSTALLATION

A. Install wall-type, fire department connections in vertical wall.

B. Install ball drip valve at each check valve for fire department connection.

3.13 CONNECTIONS

A. Drawings indicate general arrangement of piping, fittings, and specialties.

B. Install piping adjacent to equipment to allow service and maintenance.

C. Install ball drip valves at each check valve for fire department connection. Drain to floor

drain or outside building.

D. Connect piping to specialty valves, hose valves, specialties, fire department connections,

and accessories.

E. Electrical Connections: Power wiring is specified in Division 26.

F. Connect alarm devices to fire alarm.

G. Ground equipment according to Division 26 Section "Grounding and Bonding."

H. Connect wiring according to Division 26 Section "Conductors and Cables."

I. Tighten electrical connectors and terminals according to manufacturer's published torque-

tightening values. If manufacturer's torque values are not indicated, use those specified in

UL 486A and UL 486B.

3.14 LABELING AND IDENTIFICATION

A. Install labeling and pipe markers on equipment and piping according to requirements in

NFPA 13 and NFPA 14.

B. All valves controlling water supply shall be red in color.

3.15 FIELD QUALITY CONTROL

A. Perform the following field tests and inspections and prepare test reports:


1. Leak Test: After installation, charge system and test for leaks. Repair leaks and

retest until no leaks exist.

2. Test and adjust controls and safeties. Replace damaged and malfunctioning controls

and equipment.

3. Energize circuits to electrical equipment and devices.

4. Flush, test, and inspect sprinkler systems according to NFPA 13, "Systems

Acceptance" Chapter.

5. Coordinate with fire alarm tests. Operate as required.

6. Verify that equipment hose threads are same as local fire department equipment.

7. The final test shall be witnessed as specified in Division 1.

8. Final inspection shall include full flow testing, through both the main drain and the

inspector’s test connection.

9. Provide all equipment, services and labor to properly perform and supervise required

test.

B. Continuously supervise all field installation by a NICET Level II or III sprinkler system

technician.

C. Report test results promptly and in writing to Architect and authorities having jurisdiction.

D. Include a certified letter in the close-out documents from the fire protection contractor that

states that all automatic sprinkler heads have been inspected and meet the requirements of

NFPA13 and that all sprinklers have been replaced where paint was applied.

3.16 CLEANING AND PROTECTION

A. Clean dirt and debris from sprinklers.

B. Remove and replace sprinklers with paint other than factory finish.

C. Protect sprinklers from damage until Substantial Completion.

3.17 STERILIZATION AND DISINFECTION

A. Perform sterilization and disinfection with an approved chlorinating material, upon

completion of the sprinkler installation and prior to placing the system in operation.

Comply with AWWA C651.

1. The amount of chlorine applied shall provide a dosage of not less than 50 parts per

million.

2. Introduce the chlorinating materials into the water-supply lines and sprinkler systems

in an approved manner.

3. Following a contact period of not less than 8 hours, the chlorinated water shall be

flushed from the system with clean water until the chlorine is not greater than 0.4 part

per million.

4. All valves in lines being sterilized shall be opened and closed several times during the

8-hour period.

3.18 PIPING SCHEDULE

A. Standard-pressure, wet-pipe sprinkler system, NPS 1 and smaller, shall be the following:

1. Schedule 40, black-steel pipe with threaded ends; uncoated, gray-iron threaded

fittings; and threaded joints.

B. Standard-pressure, wet-pipe sprinkler system, NPS 1-1/4 and larger, shall be the following:


1. Standard-weight, black-steel pipe with roll-grooved ends; uncoated, grooved-end

fittings for steel piping; grooved-end-pipe couplings for steel piping; and grooved

joints.

END OF SECTION 21 13 13

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