ITEM REFERENCE ACTION ATTACHMENT Specifications 1 Specification Section 00200 Clarification: Additive Alternate prices 1-3 refer to Leigh High School. Additive Alternate 2: Sidewalk Replacement is referred to as Alternate 3 in the Leigh Drawings Additive Alternate 3: Exterior Door is referred to as Alternate 4 in the Leigh Drawings Add: Additive Alternate 4: New Boy’s, Girl’s, Men’s and Women’s Toilet Rooms at Branham High School (referred to as Bid Alt No.1 in the Branham Drawings) 2 Specification Section 03516 Add specification for Concrete Surface Preparation Specification 03516 3 Specification Section 07260 Add specification for Moisture Control System Specification 07260 4 Specification Section 07462 Revised Fiber Cement Panels specification. Specification 07462 ADDENDUM 01 TO All Plan Holders ISSUE DATE 07/02/2012 BA PROJECT # Branham 12-004 BA PROJECT # Leigh 12-006 DSA APP # Branham 01-112564 DSA APP.# Leigh 01-112563 DSA FILE # 43-12 REGARDING Leigh High School Cafeteria Modernization (Unit B) Branham High School Cafeteria Modernization (Unit D) ADDENDA TEXT PAGES 4 ATTACHMENT 20 DISTRICT Campbell Union High School District TOTAL PAGES 24 The information contained herein is issued as an Addendum to the Bid Documents for the Project listed above. All information included herein shall become a part of the Bid Documents for that Project. All bidders are required to acknowledge this Addendum on their Proposal Documents. Failure to acknowledge receipt of this Addendum shall deem the Proposal unresponsive and the proposal shall be disqualified.
Transcript
ITEM REFERENCE ACTION ATTACHMENT
Specifications
1 SpecificationSection 00200
Clarification:
Additive Alternate prices 1-3 refer to Leigh High School.
Additive Alternate 2: Sidewalk Replacement is referred to as Alternate 3 in the LeighDrawings
Additive Alternate 3: Exterior Door is referred to as Alternate 4 in the Leigh Drawings
Add:
Additive Alternate 4: New Boy’s, Girl’s, Men’s and Women’s Toilet Rooms at BranhamHigh School (referred to as Bid Alt No.1 in the Branham Drawings)
2 SpecificationSection 03516
Add specification for Concrete Surface Preparation Specification
03516
3 SpecificationSection 07260
Add specification for Moisture Control System Specification07260
Leigh High School Cafeteria Modernization (Unit B)Branham High School Cafeteria Modernization (Unit D) ADDENDA TEXT PAGES 4
ATTACHMENT 20
DISTRICT Campbell Union High School District
TOTAL PAGES 24
The information contained herein is issued as an Addendum to the BidDocuments for the Project listed above. All information included hereinshall become a part of the Bid Documents for that Project.
All bidders are required to acknowledge this Addendum on theirProposal Documents. Failure to acknowledge receipt of this Addendumshall deem the Proposal unresponsive and the proposal shall bedisqualified.
ITEM REFERENCE ACTION ATTACHMENT
5 Specification
Section 09911
Part 4.02 Paint Schedule
Paint Fiber Cement Panels per paint specification for New Exterior Cement Plaster.
Paint Existing Sun screen panels on both projects per paint specification for ExistingExterior Cement & Gypsum Plaster
Drawings
6 Leigh A0.0 Project Scope: delete all references to “Bid Alternate No. 2 Metal Exit Stair”
7 Add: Remove all existing finishes down to existing framing
8 Leigh A2.0 Add Sheet Note #18: Remove and reinstall existing window shades. Any window shadesdamaged shall be identified prior to removal. All window shades shall function after re-installation.
9 Leigh A2.1 Delete note “heavy duty epoxy paint” at Stage area and replace with entire stage to berefinished with clear polyurethane finish, refer painting specifications.
10 Leigh A2.1 Contractor shall test existing concrete floor and provide appropriate vapor barrier perspecifications.
11 Leigh A5.0 Keynote 09.3.0 is existing ceramic tile to remain (not work)
12 Leigh A8.0 Openings per schedule unless noted below:
Door and Window Notes: Panic Hardware: Von Duprin 98 Series: CD-98NL with thumbturn cylinder dogging typical. Strike: 299 typical, Door closers: LCN 4110-3049 (holdopener).
Doors 1, 2, 2A and 5: use McKinney Continuous Aluminum hinges or equal. Coordinatehinge with existing door mullion condition and door type.
Door 3: Hinges (3) FBB 199, Strike Von Duprin 6300
Door 4: Hinges (3) FBB 199, lockset Schlage ND10S (ANSI F75), Add hardwood birchveneer to cafeteria face to sequentially book/butt match with wall panels.
Door 5: use Lockset B663P interior thumb turn, mount throw into head, Astragal:pemko 357C, hinges: McKinney Continuous Aluminum Hinges
Door 7: Lockset B663P interior thumb turn, Hinges (3) FBB 199, Rockwood 70C pushplate on both sides and 105x70C pull on pull side
Doors 3, 4, & 7: add kick plate on push side
13 Leigh S2.1 Note #11 refers to existing shear walls and are for reference only.
14 Branham A2.0 Add Sheet Note #18: Remove and reinstall existing window shades. Any window shadesdamaged shall be identified prior to removal. All window shades shall function after re-installation.
15 Branham A2.1 Contractor shall test existing concrete floor and provide appropriate vapor barrier perspecifications.
16 Branham A3.0 Clarification: Bid Alternate #1 refers to all demolition, materials, workmanship and
ITEM REFERENCE ACTION ATTACHMENT
Bid Alt #1 equipment indicated on drawings A3.0, A3.1, A3.2 and A3.3 as well as work in this areafor structural, mechanical, plumbing and fire alarms.
Per this addendum, this price shall be listed as bid alternate number 4 in Section 00200:Proposal.
17 Branham A3.1 Add 22”x32” metal access panel to ceiling of room D-4, D-5, D-6 & D-7, Add ceiling joistsand head off one existing joist for new opening.
18 Branham A7.0 Details #1, 2 & 5 replace “remove existing glasweld panel” with “remove existingplywood panel”. These details pertain to lower wall on east side of building at grid 4between C-F.
19 Branham 7.1 Details 1, 2, 3 & 4. Clarification: New 2x4 framing, Fiber Cement panel, plywoodsheathing, insulation, gyp. bd. & vinyl covered tack panel between existing mullions andexisting sills typical on east side lower wall on grid #4 between C & F.
23 Branham A8.0 Openings per schedule unless noted below:
Door and Window Notes: Panic Hardware: Von Duprin 98 Series: CD-98NL with thumbturn cylinder dogging typical. Strike: 299 typical, Door closers: LCN 4110-3049 (holdopener).
Doors 1, 2, 2A and 9: use McKinney Continuous Aluminum hinges or equal. Coordinatehinge with existing door mullion condition and door type.
Door 1A (south east door per plan): use McKinney SER electrified hinge
Door 3: Hinges (3) FBB 199, Strike Von Duprin 6300
Door 4: Hinges (3) FBB 199, lockset Schlage ND10S (ANSI F75), Add hardwood birchveneer to cafeteria face to sequential book/butt match with wall panels.
A. The Drawings and general provisions of the Contract, including General and SpecialConditions and Division 1, General Requirements, Apply to the work specified in this section.
B. Parts 1,2,3,4,5,6, Title 24 of the California Code of Regulations (California Building Code) is tobe considered an integral part of this section.
C. All California Prevailing Wage Laws apply to the work of this section.
1.02 Work Included
A. The following is a general description of the work included in this section. This descriptiondoes not limit the scope of work shown in the drawings nor does it relieve the Contractor ofany responsibility for coordination of all work of this Contract.
Item DescriptionGeneral Inspection of the concrete substrate
Removal and replacement of non-durableconcrete
Decontamination of the concrete surface
Creation of surface profile
Repair of surface irregularitiesB. Related work may be described in other sections of this Project Manual. All sections of this
project manual are related. Contractor shall coordinate the work of this section with allother sections.
1.03 References / Standard
A. The following References and Standards are incorporated into the requirements of thisSection as they apply to products, assembly, manufacturing procedures and installation.References shall be utilized in determining “Industry Standards” and other acceptablemanufacture and installation methods but shall not relieve the Contractor of any otherresponsibilities of the Contract. Where conflicts occur between multiple listed references,the Contractor shall assume that the more restrictive standard applies and shall seekdetermination from the Architect regarding applicable standard.
General Polymers Form G-1 Revised 04/10American Society for Testingand Materials
ASTM D 4258 “Practice for Surface CleaningConcrete for Coating”
ASTM D 4260 “Standard Practice for Acid EtchingConcrete”
ASTM D 4261 “Practice for Surface Cleaning UnitMasonry for Coating”
ASTM D 4262 “Test Method for pH of ChemicallyCleaned or Etched Concrete Surfaces”
International ConcreteRepair Institute
Technical Guideline No.03732, “Selecting andSpecifying Concrete Surface Preparation forSealers, Coatings, and Polymer Overlays”. Includesvisual standards to act as a guide in definingacceptable surface profiles for the application of
Schedule Include Schedule entries on Gantt Chart for shopdrawing production and approval, fabrication andinstallation
1.05 Quality Assurance
A. Provide the following per Division 1:
Item DescriptionSupervision Full time supervision and observation by the
Contractor of all on-site Construction Activitiesincluding ordering, procurement and delivery of allmaterials and products manufactured or assembledoff-site.
Firm experienced in the necessary craftQualifications of Workers Applicator shall be familiar with the specified
requirements and the methods needed for properperformance of work of this section
General Contractor shall ensure that all workersproviding labor on this project are fully competentand experienced in the area of work beingperformed. General Contractor shall requiresubcontractors to remove any unqualified workersfrom the project.
Product Acceptance General Contractor (Superintendent) shall verifyand accept all products delivered to site prior toinstallation.
Manufacturer’s Product Information shall expresslyindicate that the proposed product is appropriatefor the intended use
Substrate Acceptance General Contractor (Superintendent) shall verify allsubstrates / conditions prior to allowing installationof any item.
Carefully inspect the installed work of all othertrades and verify that all such work is complete tothe point where this installation may properlycommence.
A. Inspection of the concrete substrate to determine its general condition, soundness, presenceof contaminants, presence of moisture vapor emissions and the best methods to use inpreparation of the surface to meet the requirements of the owner or the owner's appointedrepresentative is critical. A proper evaluation will lead to the selection of the proper toolsand equipment to accomplish the objective
Item DescriptionObservation Per Division 1.Inspection Per CCR Title 24: Continuous Inspection by DSA
Certified inspectorTesting Preliminary Relative Humidity Test ASTM F 2170
was conducted 11-15-11. This report will beprovided as a REFERNCE ONLY DOCUMENT anddoes not relive the Contractor of required testingmandated in Specifications.
Special Inspections Refer to DSA Testing and Inspection SheetMock Up Contractor shall provide 4’x4’ area mock-up of
prepared surface. Contractor may not continuewith work scope until review by Architect.
1.07 Warranty
A. Provide written warranty in accordance with Division 1
Part 2. Products
Part 3. Execution
3.01 Inspection
A. Inspection of the concrete substrate to determine its general condition, soundness,presence of contaminants, presence of moisture vapor emissions and the best methods touse in preparation of the surface to meet the requirements of the owner or the owner'sappointed representative is critical. A proper evaluation will lead to the selection of theproper tools and equipment to accomplish the objective
B. Removal and replacement of non-durable concrete must be accomplished prior toinstallation of the polymer system. Localized weak or deteriorated concrete must beremoved to sound concrete and replaced with cementitious or polymer concrete repairmortars, or an engineered concrete mix design utilizing 4700 series polyacrylate polymeradditive. For application of these systems and compatibility with the selected polymersealer, coating, lining or topping refer to the System Bulletins, Technical Data Sheets or theTechnical Services Department. Occasionally, plain fresh concrete is required and must bebonded to existing concrete. When bonding fresh concrete to existing, prepare the existingconcrete surface by scabbling, scarifying, abrasive (sand) blasting, needle scaling, highpressure water jetting (5,000 to 45,000 psi), or steel shotblasting. Apply a low modulusepoxy as the bonding agent at a rate of 80 square feet per gallon for a WFT of 20 mils, andthen place the fresh concrete or mortar. Bonding to lightweight concrete may require asecond coat of epoxy if the first coat is readily absorbed into the concrete surface. Alwaysplace the fresh concrete within the open time of the epoxy, while the epoxy-bonding agentis still wet. Rough concrete surfaces will require additional material depending on the
surface profile. Fresh concrete should have a low water cement ratio (w/c) not to exceed0.40. When bonding fresh concrete containing latex polymer admixtures, check compatibilityof the latex modified concrete mixture by either installing a test patch and performing a pull-off test, or by conducting a slant shear test in accordance with ASTM C 882, in anindependent concrete testing laboratory.
3.02 Decontamination
A. . Decontamination of the concrete surface requires the removal of oils, grease, wax, fattyacids and other contaminants, and may be accomplished by the use of detergent scrubbingwith a heavy duty cleaner/degreaser, low pressure water cleaning (less than 5,000 psi),steam cleaning, or chemical cleaning. The success of these methods is dependent upon thedepth of penetration of the contaminant; which is completely dependent upon thecontaminant’s viscosity, the concrete’s permeability and the duration of exposure. Specialcare should be taken when preparing concrete at an "in use" facility for repair, replacementor an initial floor topping. This is especially true for Food Processing facilities. Contaminantscan be carried into exposed concrete as most of these facilities use copious amounts ofwater. The contaminants can be animal fats/oils, blood, cleaning solutions, microbes, etc.They may not be completely removed during preparation (shot blasting). The concrete mayappear clean and well profiled.
B. A simple method to ensure you have sound concrete is to test the pH. The chemistry ofconcrete is alkaline in nature. Normal concrete should be in the range of 11 to 13. Most ofthe contaminants mentioned are neutral to acidic in nature. After preparation test the floorin multiple locations using distilled water and the pH paper. If the pH is 10 or loweradditional preparation will be required to ensure a good bond. In areas where thecontaminants can not be removed, the contaminated concrete must be removed andreplaced as in 2., above.
C. CAUTION: Decontamination methods that introduce large amounts of water may contributeto moisture related problems.
3.03 Surface Profile
A. The surface profile is the measure of the average distance from the peaks of the surface tothe valleys as seen through a cross sectional view of the surface of the concrete.
B. This dimension is defined pictorially and through physical samples in the ICRI TechnicalGuideline No 03732, and is expressed as a Concrete Surface Profile number (CSP 1-9).
C. For General Polymers AquArmorTM S, AquArmor MCS, FasTopTM MVT and other toppingapplications from 40 mils to 1/8", the surface profile shall be CSP 4, 5, or 6. These aretypically accomplished through decontamination of the concrete as defined in 3.02 above,followed by light scarification, medium shotblast or medium scarification..
3.04 Repair of Surface Irregularities
A. Repair of surface irregularities including bugholes, spalls, cracks, deteriorated joints, slopes,areas near transition zones, such as around drains and doorways, etc. must be repaired priorto the placement of the polymer system and/or the system must be designed to off-set thethickness of the irregularities. For removal and replacement information and materials, referto item 3.01., above. For bugholes and other minor surface irregularities, fill with EpoxyQuick Patch (3500), 4700 Instant patch Resin or the system resin mixed with a vertical gradeaggregate. For treatment of cracks and joints refer to the section below entitled “CrackIsolation”. For additional questions, contact the Technical Service Department or, your localsales representative for specific recommendations..
B. For specific applications, always consult General Polymers System Bulletins, Technical DataSheets or Technical Services Department.
A. Depending upon conditions of the concrete one or more methods of surface preparationmay be required. It is common for decontamination to precede mechanical preparation, andif necessary a second decontamination to follow.
B. The preferred methods for creation of a surface profile, including the removal of dirt, dust,laitance and curing compounds, is steel shotblasting. The steel shotblasting or vacuumblasting process is commonly referenced by equipment brand names, such as, Blastrac,Vacu-Blast, Shot-Blast, etc.
C. Surfaces to receive the bonded polymer system must be inspected after the surface isprepared to insure that the substrate is sound and structurally durable. Areas found to beunsound or non-durable must be removed and replaced as described in 3.01., above. Dust orother deleterious substances not removed after the initial surface preparation must bevacuumed, leaving the surface dust free and clean.
D. Other surface preparation methods are mentioned in ADDITIONAL SURFACE PREPARATIONREFERENCES below.
3.06 Crack Isolation
A. The performance of elastomeric products such as EPO-FLEX® internally flexible epoxy,requires a relatively uniform dry film thickness to resist drying shrinkage and thermalmovement of the concrete, while maintaining a seamless bridge or seal over the concrete.Therefore it is critical that all mortar splatter, protrusions, ridges, penetrations, or sharpprojections in the surface of the concrete, be ground smooth or otherwise made smooth, inaddition to the normal surface preparation outlined above.
B. Prior to application of an elastomeric system, control/contraction joints, construction joints,and cracks should be sealed with the selected system flexible sealant, i.e., 3580 Joint andCrack Filler, 4880 Polyurea Joint Sealant, EPO-FLEX flexible sealant. This coating shouldextend a minimum of 6” on either side of the joint or crack. The entire surface area shouldthen receive the specified crack isolation system. Isolation and/or expansion joints should bedetailed in accordance with the plans and specifications of an architectural or engineeringdesign professional for the type of structure being considered. Consult the Architect for theproper selection and use of Isolation materials and the potential use of fiberglass scrim clothfor additional crack bridging capabilities.
BARTOS ARCHITECTURE, INC. Section 07260Moisture Control System - 1
Section 07260
Moisture Control System
Part 1. GENERAL
1.01 Related DocumentsA. The Drawings and general provisions of the Contract, including General and Special
Conditions and Division 1, General Requirements, Apply to the work specified in this section.
B. Parts 1,2,3,4,5,6, Title 24 of the California Code of Regulations (California Building Code) is tobe considered an integral part of this section.
C. All California Prevailing Wage Laws apply to the work of this section.
1.02 Work IncludedA. The following is a general description of the work included in this section. This description
does not limit the scope of work shown in the drawings nor does it relieve the Contractor ofany responsibility for coordination of all work of this Contract.
Item DescriptionMoisture Control 100% solids epoxy moisture management
system formulated to suppress excessivemoisture vapor emissions in new or existingconcrete prior to installing cementitiousunderlayment.
1.03 References / StandardA. The following References and Standards are incorporated into the requirements of this
Section as they apply to products, assembly, manufacturing procedures and installation.References shall be utilized in determining “Industry Standards” and other acceptablemanufacture and installation methods but shall not relieve the Contractor of any otherresponsibilities of the Contract. Where conflicts occur between multiple listed references,the Contractor shall assume that the more restrictive standard applies and shall seekdetermination from the Architect regarding applicable standard.
References ASTM F2170 Measurement of Relative Humitdity
ASTM F2420 Measurement of Relative Humitdity
1.04 Quality AssuranceA. Provide the following per Division 1:
Item DescriptionSupervision Full time supervision and observation by the
Contractor of all on-site Construction Activitiesincluding ordering, procurement and delivery of allmaterials and products manufactured or assembledoff-site.
Firm experienced in successfully preparing existingconcrete slabs for sealer
Qualifications of Workers Applicator must be authorized (Certified) andfactory trained by the manufacturer in using
Section 07260 BARTOS ARCHITECTURE, INC.Moisture Control System - 2
approved mixing equipment and tools
General Contractor shall ensure that all workersproviding labor on this project are fully competentand experienced in the area of work beingperformed. General Contractor shall requiresubcontractors to remove any unqualified workersfrom the project.
Product Acceptance General Contractor (Superintendent) shall verifyand accept all products delivered to site prior toinstallation.
Manufacturer’s Product Information shall expresslyindicate that the proposed product is appropriatefor the intended use
Provide compatible components of underlaymentsystem (underlayment cement, primer, ) from thesame manufacturer, Follow manufacturer’srecommendations regarding compatibility ofproducts.
Substrate Acceptance General Contractor (Superintendent) shall verify allsubstrates / conditions prior to allowing installationof any item.
General Contractor clean and prepare existingsubstrate and completely remove any debris, dustor other contaminating factors
Inspection: Prior to all work of this section,carefully inspect the installed work of all othertrades and verify that all such work is complete tothe point where this installation may properlycommence.
1.05 Quality ControlA. The following specific procedures shall be required to demonstrate adequate levels of
quality provided for project components and systems. Exclusion of any item from this listdoes not relieve the Contractor of any responsibilities for quality procedures coveredelsewhere in the Contract.
Item DescriptionObservation Per Division 1.Inspection Per CCR Title 24: Continuous Inspection by DSA
Certified inspectorTesting Refer to DSA Testing and Inspection Sheet
ASTM C 109 testsSpecial Inspections Refer to DSA Testing and Inspection Sheet
1.06 WarrantyA. Provide written warranty in accordance with Division 1
Item DescriptionWarranty Form Per Division 1
Sub Contractor and manufacturer to providewarranty against defects in materials orworkmanship.
Warranty Period 12 years
BARTOS ARCHITECTURE, INC. Section 07260Moisture Control System - 3
Applicator must file a pre-installation checklistwith the manufacturer and receive writtenconfirmation of the approval to proceed
(a) ARDEX MC PLUS Two-Coat Moisture Control System or approved equal
2.03 Mix DesignsA. Mix proportions and methods shall be in strict accordance with product manufacturer
recommendations.
Part 3. Execution
3.01 Delivery, Storage and HandlingA. General Requirements: Materials shall be delivered in their original, unopened packages,
and protected from exposure to the elements. Damaged or deteriorated materials shall beremoved from the premises.
3.02 Site ConditionsA. Application of underlayment system shall not begin until the building is enclosed, including
roof, windows, doors, and other fenestration.
B. Environmental Requirements: Before, during and after installation of underlayment,building interior shall be enclosed and maintained at a temperature above 50 degrees F (10degrees C) and below 100 degrees F (37.7 degrees C) until structure and subfloortemperature are stabilized.
3.03 PreparationA. All concrete subfloors must be of adequate strength, clean, and free of all oil, grease, dirt,
curing compounds and any substance that might act as a bondbreaker before priming.Mechanically clean if necessary using shot blasting or other. Mechanical preparation of thesurface is required to obtain a minimum ICRI concrete surface profile of 3 (CSP 3). Acidetching and the use of sweeping compounds and solvents are not acceptable.
B. All cracks in the subfloor shall be repaired to minimize telegraphing through theunderlayment.
C. Substrates shall be inspected and corrected for moisture or any other conditions that couldaffect the performance of the underlayment or the finished floor covering. Followmanufacturer’s recommendations in applying moisture control system.
Section 07260 BARTOS ARCHITECTURE, INC.Moisture Control System - 4
D. Expansion Joints: Honor all expansion and isolation joints up through the underlayment andmoisture control system.
E. Control Joints: Fill all non-moving joints with ARDEX FEATHER FINISH or ARDEX SD-P asrequired,
3.04 PrimingA. For standard absorbent concrete subfloors: Mix ARDEX P 51, 1:1 with water and apply
evenly with a soft push broom. Do not leave any bare spots. Remove all puddles and excessprimer. Allow to dry to a clear, thin film (min. 3 hours, max. 24 hours). Underlayment shallnot be applied until the primer is dry.
B. For extremely absorbent concrete subfloors: Make an initial application of ARDEX P 51mixed with 3 parts water using a soft push broom. Do not leave any bare spots. Remove allpuddles and excess primer. Allow to dry thoroughly before proceeding with the standardapplication of primer as described above for standard absorbent concrete.
3.05 Application of UnderlaymentA. The Portland cement-based underlayment shall be a or equivalent to ARDEX K 15 Premium
Self-Leveling Underlayment Concrete, ARDEX K 55TM RAPID Premium High-Flow, Self-Drying, Self-Leveling Underlayment or ARDEX K 55 MICROTEC High Flow Self-LevelingUnderlayment, suitable for the intended use
B. Prior to beginning the installation, measure the relative humidity within the concrete (ASTMF2170). Alternatively, you can also measure the surface relative humidity in accordance withASTM F2420. For these relative humidity methods, the RH shall not exceed 98%.
C. If the concrete substrate is too uneven to provide a uniform film thickness of the ARDEX MCPLUS PRIMER and MC PLUS SEALER (typically CSP 6 or higher), the substrate can be pre-smoothed using ARDEX K 301. Please refer to the appropriate ARDEX technical brochure forinstallation instructions and necessary cure times
D. Pour or pump the liquid ARDEX K 15 and spread in place with the ARDEX T-4 Spreader.
E. Use the ARDEX T-5 Smoother for featheredge and touch-up.
F. Wear baseball shoes with non-metallic cleats to avoid leaving marks in the liquid ARDEX K15.
3.06 Crack and Joint PreparationA. Non-moving cracks and saw-cut joints: Cracks greater than a hairline in width [1/32” (0.79
mm)] and saw-cuts must be filled in strict accordance with the installation instructionsprovided by the Manufacturer. Once the dormant cracks and saw-cuts have been properlyfilled, allow these areas to cure thoroughly in accordance with the epoxy manufacturer’srecommendations prior to proceeding.
B. Moving joints: All moving joints and cracks must be honored up through the moisturecontrol system by installing a flexible sealing compound designed specifically for use overmoving joints such as ARDEX ARDISEALTM RAPID PLUS
3.07 Preparation and ApplicationA. Follow manufacturer’s recommendations for measuring and measuring and mixing of Epoxy
system.
B. Due to the wide range of adhesives that are used to install floor coverings, some adhesivesmay dry more quickly over Cementitious underlayment’s than over other substrates. If thiscondition occurs, follow underlayment manufacturer’s recommendations for priming thesurface of the underlayment prior to installation of adhesive.
BARTOS ARCHITECTURE, INC. Section 07260Moisture Control System - 5
C. Each individual 13.2 lb unit (6 kg) contains separate, pre-measured quantities ofhardener (Part B) and resin (Part A). After opening each container, stir the individualcomponents thoroughly before blending.
D. The hardening agent (Part B) is added to the resin (Part A). Pour all of the hardener intothe resin portion and stir thoroughly for a minimum of 3 minutes using a low speed drill andan epoxy mixing paddle. Once mixed, pour some of the epoxy back into the hardenercontainer, stir for 10 seconds, and then pour all of the contents back into the resincontainer. Mix for an additional 30 seconds before applying.
E. The ARDEX MC PLUS PRIMER (red) is applied first. Apply the freshly mixed primer tothe prepared concrete surface in a uniform direction at an application rate of 250 sq. ft.(23.2 m2) per unit (approx. 8 mils/200 microns). Use a short-nap paint roller or notchedsqueegee with back-rolling for smoother surfaces, and a longer nap roller for more unevensubstrates.
F. To minimize the potential for pinhole formation, work the ARDEX MC PLUS PRIMER intothe surface with the roller to ensure maximum penetration. ARDEX MC PLUS PRIMER canalso be worked into the surface with a paintbrush for hard to reach areas and corners. Oncean area has been completely coated, allow this to dry for a minimum of 8 hours (max. 24hours) prior to applying the ARDEX MC PLUS SEALER top coat.
G. Apply the ARDEX MC PLUS SEALER top coat at a 90° angle to the ARDEX MC PLUSPRIMER.
H. Apply the freshly mixed ARDEX MC PLUS SEALER (dark green) to the ARDEX MCPLUS PRIMER surface in a uniform direction at an application rate of 250 sq. ft. (23.2 m2) perunit (8 mils/200 microns). Use a short-nap paint roller or notched squeegee with back-rollingfor smoother surfaces, and a longer nap roller for more uneven substrates.
I. ARDEX MC PLUS SEALER can also be applied with a paintbrush for hard to reach areasand corners. Once an area has been completely coated, allow this to dry for a minimum of 8hours (max. 24 hours). It is not necessary to re-test the substrate for moisture emissions.
J. For ARDEX underlayment applications of 1/4” (6 mm) or less, prime the surface of theARDEX MC PLUS SEALER with ARDEX P 82 Ultra Prime. Allow the ARDEX P 82 to drythoroughly (min 3 hours; max 24 hours) before installing the underlayment.
K. For underlayment installations greater than 1/4” (6 mm), or if the ARDEX MC PLUS was notworked into the surface sufficiently enough to prevent pinholes, a third coat with sandbroadcast is needed. No ARDEX P 82 is required.
(a) Working at a 90° angle to the direction the second coat was applied, apply the ARDEXMC PLUS PRIMER (red) as above at a coverage rate of 200 sq. ft. (18.6 m2) per unit(~10 mils/250 microns). While this third coat is still in a fresh state (maximum 20minutes), broadcast an excess of fine sand (less than 1/50 of an inch in grain size or98.5% passing sieve size #35 or #30) consistently over the entire area.
(b) When broadcasting the sand, use a NIOSH approved dust mask in conformance withOSHA requirements regarding the handling of sand. Do not stand or walk on thefreshly applied epoxy when broadcasting the sand.
(c) Once an area has been completely covered with sand, the surface of the sand can bewalked on, being careful not to expose the epoxy at any time. Use approximately 1lb of sand per square foot of area. Once the sand broadcast is complete, avoid alltraffic over the surface for a minimum of 8 hours.
Section 07260 BARTOS ARCHITECTURE, INC.Moisture Control System - 6
(d) After 8 hours, broom sweep and vacuum the surface to remove all loose sand. Theclean, prepared surface of the sand is the priming system for the ARDEXUnderlayment. No additional priming is required. There is no limit to how long thesanded surface can remain before installing the ARDEX Underlayment provided thatthe surface does not become contaminated.
3.08 Field Quality ControlA. Where specified, field sampling of the ARDEX products is to be done by taking an entire
unopened unit or bag of the product being installed to an independent testing facility toperform the specified testing. There are no in situ test procedures for the evaluation of thematerials specified.
3.09 ProtectionA. Prior to the installation of the underlayment or finish flooring, the surface of the
underlayment should be protected from abuse by other trades by the use of plywood,Masonite or other suitable protection course.
End of Section
BARTOS ARCHITECTURE, INC. Section 07462Fiber Cement Panels - 1
Section 07462
Fiber Cement Panels
Part 1. General
1.01 Related Documents
A. The Drawings and general provisions of the Contract, including General and SpecialConditions and Division 1, General Requirements, apply to the work specified in this section.
B. Parts 1,2,3,4,5,6, Title 24 of the California Code of Regulations(California Building Code) is tobe considered an integral part of this section.
C. All California Prevailing Wage Laws apply to the work of this section
1.02 Work Included
A. The following is a general description of the work included in this section. This description
does not limit the scope of work shown in the drawings nor does it relieve the Contractor of
any responsibility for coordination of ALL work of this Contract.
B. Applications of fiber cement panels specified in this section
Item DescriptionGeneral Branham Cafeteria- east exterior elevation infill
panels
Leigh Cafeteria- east and west elevations infillpanels
C. Related work may be described in other sections of this Project Manual. All sections of this
project manual are related. Contractor shall coordinate the work of this section with all
other sections.
D. Fiber cement panels: James Hardie HZ10 Engineered for Climate Siding.
E. The following is a general description of the work included in this section. This description
does not limit the scope of work shown in the drawings nor does it relieve the Contractor of
any responsibility for coordination of ALL work of this Contract.
1.03 Submittals
D. Provide the following submittals per the requirements of Section 01300.
Item DescriptionCatalog Cuts Manufacturer’s information for the specified R-value
productProduct Data Manufacturer's data sheets on each product to be
used, including:1. Preparation, instructions and recommendations.2. Storage, handling requirements and
recommendations.3. Installation & methods.
Verification Samples For each finish product specified, two samples,minimum size 4 by 6 inches (100 by 150 mm),representing actual product, color, and patterns.
Shop Drawings Provide detailed drawings of typical non-standardapplications of cementitious siding materials whichare outside the scope of the standard details and
