36C26118R0487-0001002.pdf

VACCHCS Fresno, CA #570-16-302 Design Expanded Chilled Water Capacity, Phase 2- 100%CD – AMEND-001 May 30, 2019

TABLE OF CONTENTS

00 01 10-1

DEPARTMENT OF VETERANS AFFAIRS

VHA MASTER SPECIFICATIONS

Section 00 01 10

DIVISION 00 - SPECIAL SECTIONS DATE

00 01 15 List of Drawing Sheets 07-15

DIVISION 01 - GENERAL REQUIREMENTS

01 00 00 General Requirements 11-15

01 00 10 Contractor Quality Control (CQC)

01 32 16.15 Project Schedules (Small Projects) 02-15

01 33 23 Shop Drawings, Product Data, and Samples 07-15

01 35 26 Safety Requirements 09-16

01 42 19 Reference Standards 05-16

01 45 00 Quality Control

01 45 29 Testing Laboratory Services 06-16

01 45 35 Special Inspections

01 57 19 Temporary Environmental Controls

01 74 19 Construction Waste Management 09-13

01 91 00 General Commissioning Requirements 10-15

DIVISION 02 – EXISTING CONDITIONS

02 21 13 Site Surveys 08-16

02 41 00 Demolition 02-15

DIVISION 03 – CONCRETE

03 30 00 Cast-in-Place Concrete 12-15

DIVISION 04 – MASONRY

04 05 13 Masonry Mortaring 10-17

04 72 00 Cast Stone Masonry 02-15

DIVISION 05 – METALS

05 12 00 Structural Steel Framing 02-16

05 21 00 Steel Joist Framing 03-10

05 31 00 Steel Decking 02-16

05 40 00 Cold-Formed Metal Framing 05-16

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

NOTE: AMENDMENT 001 ISSUED ON 05/30/19 ADDS SPECIFICATION SECTIONS 07 01 50.10, 07 22 00, 07 40 00, 07 51 00, 07 51 13.13, 07 60 00, 07 72 00, 07 84 00, 07 95 13, 08 31 13 AND 09 54 23 TO THE CONTRACT SPECIFICATIONS.

NO OTHER SPECIFICATION SECTIONS HAVE BEEN MODIFIED.

00 01 10-2

07 01 50.19 Preparation for Re-Roofing 02-16

07 22 00 Roof and Deck Insulation 02-16

07 40 00 Roofing and Siding Panels 10-15

07 51 00 Built-Up Bituminous Roofing 08-18

07 51 13.13 Cold-Applied Built-Up Asphalt Roofing 08-16

07 60 00 Flashing and Sheet Metal 07-14

07 72 00 Roof Accessories 10-15

07 84 00 Firestopping 02-16

07 92 00 Joint Sealants 10-17

07 95 13 Expansion Joint Cover Assemblies 02-16

DIVISION 08 - OPENINGS

08 31 13 Access Doors and Frames 02-16

08 80 00 Glazing 10-15

DIVISION 09 - FINISHES

09 54 23 Linear Metal Ceilings 10-15

09 91 00 Painting 01-16

DIVISION 10 - SPECIALTIES

10 73 00 Translucent Custom Canopies

DIVISION 13 - SPECIAL CONSTRUCTION

13 05 41 Seismic Restraint Requirements for Non-Structural Components 01-14

DIVISION 22 – PLUMBING

22 05 11 Common Work Results for Plumbing 07-16

22 07 11 Plumbing Insulation 09-15

22 08 00 Commissioning of Plumbing Systems

22 62 00 Vacuum Systems for Laboratory and Healthcare Facilities 09-15

22 63 00 Gas Systems for Laboratory and Healthcare Facilities 09-15

DIVISION 23 – HEATING, VENTILATING, AND AIR CONDITIONING

(HVAC)

23 05 10 Common Work Results for Boiler Plant and Steam Generation 02-15

23 05 11 Common Work Results for HVAC 02-15

23 05 12 General Motor Requirements for HVAC and Steam Generation Equipment 11-10

23 05 41 Noise and Vibration Control for HVAC Piping and Equipment 02-15

23 05 50 Variable Frequency Drives

23 05 51 Noise and Vibration Control for Boiler Plant 02-15

23 05 93 Testing, Adjusting, and Balancing for HVAC 02-15

23 07 11 HVAC and Boiler Plant Insulation 02-15

23 08 00 Commissioning of HVAC Systems 11-16

00 01 10-3

23 09 23 Direct-Digital Control System for HVAC 09-11

23 21 13 Hydronic Piping 09-12

23 22 13 Steam and Condensate Heating Piping 02-15

23 25 00 HVAC Water Treatment

23 64 00 Packaged Water Chillers 04-11

DIVISION 26 – ELECTRICAL

26 05 11 Requirements for Electrical Installations 01-16

26 05 13 Medium Voltage Cables 01-17

26 05 19 Low-Voltage Electrical Power Conductors and Cables 07-13

26 05 26 Grounding and Bonding for Electrical Systems 12-12

26 05 29 Hangers and Supports for Electrical Systems

26 05 41 Underground Electrical Construction 01-17

26 05 48 Vibration and Seismic Controls for Electrical Systems

26 05 53 Identification for Electrical Systems

26 05 73 Overcurrent Protective Device Coordination Study 12-15

26 05 74 Overcurrent Protective Device Arc-Flash Study

26 08 00 Commissioning of Electrical Systems 11-16

26 27 26 Wiring Devices 01-16

26 29 11 Motor Controllers 08-14

26 29 21 Enclosed Switches and Circuit Breakers 12-12

26 56 00 Exterior Lighting 05-14

DIVISION 31 – EARTHWORK

31 20 00 Earthwork 07-16

31 63 26 Drilled Caissons 10-12

DIVISION 32 – EXTERIOR IMPROVEMENTS

32 05 23 Cement and Concrete for Exterior Improvements 08-16

32 31 13 Chain Link Fences and Gates 08-16

32 84 00 Planting Irrigation 08-16

32 90 00 Planting 08-16

DIVISION 33 – UTILITIES

33 08 00 Commissioning of Site Utility Systems 11-16

33 10 00 Water Utilities 03-17

33 40 00 Storm Sewer Utilities

33 46 13 Foundation Drainage

33 51 00 Natural-Gas Distribution

33 63 00 Steam Energy Distribution 09-17

Design Expanded Chilled Water Capacity, Phase 2 – Amendment 001 May 30, 2019

PREPARATION FOR RE-ROOFING

07 01 50.19 - 1

SECTION 07 01 50.19

PREPARATION FOR RE-ROOFING

PART 1 – GENERAL

1.1 SUMMARY

A. Section Includes:

1. Partial roof removal for new roof system installation.

2. Roofing membrane and selective roofing system component removal for new roof membrane installation.

3. Existing roofing membrane preparation for new roofing system installation.

4. Contractor to match existing roofing system specifications when making modifications.

Existing roof warranties shall be maintained and re-certified after work is complete.

B. Existing Roofing System: Built-up asphalt components include:

1. Pavers and paver supports.

2. Aggregate ballast.

3. Roof insulation.

4. Aggregate surfacing.

5. Roofing membrane.

6. Cover board.

7. Roof insulation.

8. Vapor retarder.

9. Substrate board.

1.2 RELATED REQUIREMENTS

A. Asbestos Removal: Section 02 82 13.21, ASBESTOS ROOFING ABATEMENT.

B. Roofing System: Section 07 51 13.13 COLD APPLIED BUILT-UP ASPHALT ROOFING, Section 07

51 00, BUILT-UP BITUMINOUS ROOFING.

C. Insulation: Section 07 21 13 THERMAL INSULATION

D. Insulation 07 22 00, ROOF AND DECK INSULATION.

E. Sheet Metal Counterflashing: Section 07 60 00, SHEET METAL FLASHING AND TRIM.

1.3 APPLICABLE PUBLICATIONS

A. Comply with references to extent specified in this section.

B. American National Standards Institute/Single-Ply Roofing Institute (ANSI/SPRI):

FX-1-01(R2006) Standard Field Test Procedure for Determining the Withdrawal Resistance of

Roofing Fasteners.

C. American Society for Nondestructive Testing (ASNT):

SNT-TC-1A - Personnel Qualification and Certification for Nondestructive Testing.

07 01 50.19 - 2

D. ASTM International (ASTM):

C208-12 - Cellulosic Fiber Insulating Board.

C578-15 - Rigid, Cellular Polystyrene Thermal Insulation.

C728-15 - Perlite Thermal Insulation Board.

C1177/C1177M-13 - Glass Mat Gypsum Substrate for Use as Sheathing.

C1153-97(2003)e1 - Location of Wet Insulation in Roofing Systems Using Infrared Imaging.

C1278/C1278M-07a(2015) - Fiber-Reinforced Gypsum Panel.

D4263-83(2012) - Indicating Moisture in Concrete by the Plastic Sheet Method.

E. U.S. Department of Commerce National Institute of Standards and Technology (NIST):

DOC PS 1-09 - Structural Plywood.

DOC PS 2-04 - Performance Standard for Wood-Based Structural-Use Panels.

1.4 PREINSTALLATION MEETINGS

A. Conduct preinstallation meeting minimum 30 days before beginning Work of this section.

1. Required Participants:

a. Contracting Officer's Representative.

b. Architect/Engineer.

c. Inspection and Testing Agency.

d. Contractor.

e. Installer.

f. Manufacturer's field representative.

g. Other installers responsible for adjacent and intersecting work, including mechanical and electrical equipment installers.

2. Meeting Agenda: Distribute agenda to participants minimum 3 days before meeting.

a. Removal and installation schedule.

b. Removal and installation sequence.

c. Preparatory work.

d. Protection before, during, and after installation.

e. Removal and installation.

f. Temporary roofing including daily terminations.

g. Transitions and connections to other work.

h. Inspecting and testing.

i. Other items affecting successful completion.

3. Document and distribute meeting minutes to participants to record decisions affecting installation.

07 01 50.19 - 3

1.5 SUBMITTALS

A. Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

B. Submittal Drawings:

1. Show size, configuration, and installation details.

C. Manufacturer's Literature and Data:

1. Description of each product.

2. Description of temporary roof system and components.

3. List of patching materials.

4. Recover board fastening requirements.

5. Temporary roofing installation instructions and removal instructions. preparation instructions to receive new roofing.

6. Existing roofing warrantor's instructions.

D. Photographs: Document existing conditions potentially affected by roofing operations before work begins.

E. Field Inspection Reports:

1. Certify warrantor inspected completed roofing and existing warranty remains in effect.

F. Infrared Roof Moisture Survey Report.

1.6 QUALITY ASSURANCE

A. Installer Qualifications:

1. Same installer as Section 07 51 13.13 COLD APPLIED BUILT-UP ASPHALT ROOFING, Section 07 51 00, BUILT-UP BITUMINOUS ROOFING.

2. Licensed to perform asbestos abatement in Project jurisdiction when removal of asbestos-containing material is required.

3. Approved by existing roofing system warrantor when work affects existing roofing system under warranty.

1.7 FIELD CONDITIONS

A. Building Occupancy: Perform work to minimize disruption to normal building operations.

1. Provide notice minimum 72 hours before beginning activities affecting normal building operations.

B. Weather Limitations: Proceed with reroofing preparation only during dry weather conditions as specified for new roofing installation in Section 07 51 13.13 COLD APPLIED BUILT-UP ASPHALT

ROOFING, Section 07 51 00, BUILT-UP BITUMINOUS ROOFING.

1. Remove only as much roofing in one day as can be made watertight in same day.

C. Hazardous Materials may to exist in existing roofing system.

07 01 50.19 - 4

1. See Section 02 82 13.21, ASBESTOS ROOFING ABATEMENT for hazardous material removal and disposal.

2. Coordinate reroofing preparation with asbestos roofing abatement to prevent water from entering existing roofing system and building.

1.8 WARRANTY

A. Construction Warranty: FAR clause 52.246-21, "Warranty of Construction."

B. Existing Warranties: Perform work to maintain existing roofing warranty in effect.

1. Notify warrantor before beginning, and upon completion of reroofing.

2. Obtain warrantor's instructions for maintaining existing warranty.

PART 2 – PRODUCTS

2.1 MATERIALS

A. Patching Materials: Match existing roofing system materials.

B. Plywood Sheathing: See Section 06 10 00, ROUGH CARPENTRY.

C. Metal Flashing: See Section 07 60 00, SHEET METAL FLASHING AND TRIM.

D. Temporary Protection Materials:

1. Expanded Polystyrene (EPS) Insulation: ASTM C578.

2. Plywood: NIST DOC PS 1, Grade CD Exposure 1.

3. Oriented Strand Board (OSB): NIST DOC PS 2, Exposure 1.

E. Temporary Roofing System Materials: Contractor's option.

F. Fasteners: Type and size required by roof membrane manufacturer to resist wind uplift.

PART 3 – EXECUTION

3.1 PREPARATION

A. Examine and verify substrate suitability for product installation.

B. Protect existing roofing system indicated to remain.

1. Cover roof membrane with temporary protection materials without impeding drainage.

2. Limit traffic and material storage to protected areas.

3. Maintain temporary protection until replacement roofing is completed.

C. Protect existing construction and completed work from damage.

D. Protect landscaping from damage.

E. Maintain access to existing walkways and adjacent occupied facilities.

F. Coordinate use of rooftop fresh air intakes with Contracting Officer's Representative to minimize effect on indoor air quality.

G. Ensure temporary protection materials are available for immediate use in case of unexpected rain.

H. Ensure roof drainage remains functional.

1. Keep drainage systems clear of debris.

07 01 50.19 - 5

2. Prevent water from entering building and existing roofing system.

I. Coordinate rooftop utilities remaining active during roofing work with Contacting Officer's

Representative.

J. Contractor shall remove all debris on roof and in roof drains/overflow drains under this contract.

Contractor shall ensure there is no ponding at the new work site and new work does not contribute to existing ponding issues. Contractor shall demonstrate that all roof drains and overflows operate prior to acceptance.

3.2 RE-ROOFING PREPARATION - GENERAL

A. Notify Contacting Officer's Representative of planned operations, daily.

1. Identify location and extent of roofing removal.

2. Request authorization to proceed.

3.3 OVERBURDEN REMOVAL

A. Remove aggregate ballast.

1. Store aggregate ballast for reuse.

B. Remove loose aggregate from bituminous membrane surface.

C. Remove pavers and paver support.

1. Store undamaged pavers and paver supports for reuse.

2. Dispose of damaged pavers.

D. Remove insulation and drainage board from protected roofing membrane.

1. Store insulation and drainage board for reuse.

3.4 PARTIAL ROOFING SYSTEM REMOVAL

A. Remove existing roofing completely, exposing structural roof deck at locations and to extent indicated on drawings.

1. Remove cover board, roof insulation, vapor retarder, and substrate board.

2. Remove or cut-off roofing system fasteners.

3.5 DECK PREPARATION

A. Inspect structural roof deck after roofing system removal.

B. Concrete Roof Decks:

1. Visually confirm concrete roof deck is dry.

2. Perform moisture test according to ASTM D4263 each day for each separate roof area.

a. Proceed with roofing work only when moisture is not observed.

C. Steel Roof Decks:

1. Visually inspect structural roof deck installation and fasteners.

07 01 50.19 - 6

a. Notify Contracting Officer's Representative of unsuitable conditions and inadequate fastenings potentially affecting roof system performance.

2. Secure roof deck with additional fastenings as determined by Contracting Officer's

Representative.

3. Replace roof deck as determined by Contracting Officer's Representative.

3.6 TEMPORARY ROOFING

A. Install temporary roofing to maintain building watertight.

B. Remove temporary roofing before installing new roofing.

3.7 BASE FLASHING REMOVAL

A. Expose base flashings to permit removal.

1. Two-Piece Counterflashings: Remove cap flashing and store for reuse.

2. Single Piece Counterflashings: Carefully bend counterflashing.

3. Metal Copings: Remove decorative cap and store for reuse.

B. Remove existing base flashings.

1. Clean substrates to receive new flashings.

C. Replace counterflashings damaged during removal.

1. Counterflashings: See Section 07 60 00 SHEET METAL FLASHING AND TRIM.

D. Install exterior fire-retardant-treated plywood sheathing, 15 mm (19/32 inch) thick.

3.8 RECOVER BOARD INSTALLATION

A. Install recover boards over existing roof insulation or roofing membrane with butted joints. Stagger end joints in adjacent rows.

B. Fasten recover boards to resist wind-uplift.

1. Fastening Requirements: See Section 07 51 13.13 COLD APPLIED BUILT-UP ASPHALT

ROOFING, Section 07 51 00, BUILT-UP BITUMINOUS ROOFING...

2. Uplift Resistance: Base on pull out resistance determined by specified field testing.

3.9 FIELD QUALITY CONTROL

A. Field Tests: Performed by testing laboratory specified in Section 01 45 29, TESTING LABORATORY

SERVICES.

1. Fastener Pull Out Tests: ANSI/SPRI FX-1.

B. Existing Roofing System Warrantor Services:

1. Inspect reroofing preparation and roofing installation to verify compliance with existing warranty conditions.

2. Submit reports of field inspections, and supplemental instructions issued during inspections.

07 01 50.19 - 7

3.10 DISPOSAL

A. Collect waste materials in containers.

B. Remove waste materials from project site, regularly, to prevent accumulation.

C. Legally dispose of waste materials.

- - E N D - -

ROOF AND DECK INSULATION

07 22 00 - 1

SECTION 07 22 00

ROOF AND DECK INSULATION

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

B. Roof and deck insulation, substrate board, vapor retarder, and cover board on new metal deck substrates ready to receive roofing or waterproofing membrane.

C. Repairs and alteration work to existing roof insulation.

1.2 RELATED REQUIREMENTS

A. Non-Flooring Adhesives and Sealants VOC Limits: Section 01 81 13, SUSTAINABLE

CONSTRUCTION REQUIREMENTS.

B. Wood Cants, Blocking, and Edge Strips: Section 06 10 00, ROUGH CARPENTRY.

1.3 APPLICABLE PUBLICATIONS

A. Comply with references to extent specified in this section.

B. American Society of Heating, Refrigeration and Air Conditioning (ASHRAE):

1. Standard 90.1-13 - Energy Standard for Buildings Except Low-Rise Residential Buildings.

C. ASTM International (ASTM):

1. C208-12 - Cellulosic Fiber Insulating Board.

2. C552-15 - Cellular Glass Thermal Insulation.

3. C726-05 - Mineral Fiber Roof Insulation Board.

4. C728-15 - Perlite Thermal Insulation Board.

5. C1177/C1177M-13 - Glass Mat Gypsum Substrate for Use as Sheathing.

6. C1278/C1278M-07a(2015) - Fiber-Reinforced Gypsum Panel.

7. C1289-15 - Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board.

8. C1396/C1396M-14a - Gypsum Board.

9. D41/D41M-11 - Asphalt Primer Used in Roofing, Dampproofing, and Waterproofing.

10. D312-06 - Asphalt Used in Roofing.

11. D1970/D1970M-15 - Self-Adhering Polymer Modified Bituminous Sheet Materials Used as

Steep Roofing Underlayment for Ice Dam Protection.

12. D2178/D2178M-15 - Asphalt Glass Felt Used in Roofing and Waterproofing.

13. D2822/D2822M-11 - Asphalt Roof Cement, Asbestos Containing.

14. D4586/D4586M-07(2012)e1 - Asphalt Roof Cement, Asbestos-Free.

15. E84-15a - Surface Burning Characteristics of Building Materials.

16. F1667-15 - Driven Fasteners: Nails, Spikes, and Staples.

D. National Roofing Contractors Association (NRCA):

1. Manual-15 - The NRCA Roofing Manual: Membrane Roof Systems.

ROOF AND DECK INSULATION

07 22 00 - 2

E. U.S. Department of Agriculture (USDA):

1. USDA BioPreferred Program Catalog.

F. UL LLC (UL):

1. Listed - Online Certifications Directory.

G. U.S. Department of Commerce National Institute of Standards and Technology (NIST):

1. DOC PS 1-09 - Structural Plywood.

2. DOC PS 2-04 - Performance Standard for Wood-Based Structural-Use Panels.

1.4 SUBMITTALS

A. Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

B. Submittal Drawings:

1. Show size, configuration, and installation details.

a. Nailers, cants, and terminations.

b. Layout of insulation showing slopes, tapers, penetrations, and edge conditions.

C. Manufacturer's Literature and Data:

1. Description of each product.

D. Samples:

1. Roof insulation, each type.

2. Fasteners, each type.

E. Sustainable Construction Submittals:

1. Recycled Content: Identify post-consumer and pre-consumer recycled content percentage by weight.

2. Biobased Content:

a. Show type and quantity for each product.

3. Low Pollutant-Emitting Materials:

a. Show volatile organic compound types and quantities.

b. Certify each agrifiber product contain no added urea formaldehyde.

F. Qualifications: Substantiate qualifications meet specifications.

1. Installer.

1.5 QUALITY ASSURANCE

A. Installer Qualifications: Same installer as Division 07 roofing section installer.

1.6 DELIVERY

A. Comply with recommendations of NRCA Manual.

B. Deliver products in manufacturer's original sealed packaging.

C. Mark packaging, legibly. Indicate manufacturer's name or brand, type, and manufacture date.

D. Before installation, return or dispose of products within distorted, damaged, or opened packaging.

ROOF AND DECK INSULATION

07 22 00 - 3

1.7 STORAGE AND HANDLING

A. Comply with recommendations of NRCA Manual.

B. Store products indoors in dry, weathertight facility.

C. Protect products from damage during handling and construction operations.

1.8 FIELD CONDITIONS

A. Environment:

1. Install products when existing and forecasted weather permit installation according to manufacturer's instructions.

1.9 WARRANTY

A. Construction Warranty: FAR clause 52.246-21, "Warranty of Construction."

B. Manufacturer's Warranty: Warrant substrate board, vapor retarder, insulation, and cover board against material and manufacturing defects as part of Division 07 roofing system warranty.

PART 2 - PRODUCTS

2.1 SYSTEM PERFORMANCE

A. Insulation Thermal Performance:

1. Overall Average R-Value: RSI-57 (R-33), minimum.

2. Any Location R-Value: RSI-17 (R-10), minimum.

B. Fire and Wind Uplift Resistance: Provide roof insulation complying with requirements specified in

Division 07 roofing section.

C. Insulation on Metal Decking: UL labeled indicating compliance with one of the following:

1. UL Listed.

2. Insulation Surface Burning Characteristics: When tested according to ASTM E84.

a. Flame Spread Rating: 75 maximum.

b. Smoke Developed Rating: 150 maximum.

2.2 PRODUCTS - GENERAL

A. Provide each product from one manufacturer.

B. Sustainable Construction Requirements:

1. Insulation Recycled Content:

a. Mineral Fiber: 75 percent total recycled content, minimum.

b. Fiberglass: 20 percent total recycled content, minimum.

c. Cellulose: 75 percent post-consumer recycled content, minimum.

d. Perlite Composite Board: 23 percent post-consumer recycled content, minimum.

e. Rigid Foam: 9 percent total recycled content, minimum.

f. Glass Fiber Reinforced Rigid Foam: 6 percent total recycled content, minimum.

ROOF AND DECK INSULATION

07 22 00 - 4

2. Low Pollutant-Emitting Materials: Comply with VOC limits specified in Section 01 81 13, SUSTAINABLE CONSTRUCTION REQUIREMENTS for the following products:

a. Non-flooring adhesives and sealants.

b. Composite wood and agrifiber.

3. Bio-Based Materials: Where applicable, provide products designated by USDA and meeting or exceeding USDA recommendations for bio-based content, and products meeting Rapidly

Renewable Materials and certified sustainable wood content definitions; refer to www.biopreferred.gov.

2.3 ADHESIVES

A. Primer: ASTM D41/D41M.

B. Asphalt: ASTM D312, Type III or IV for vapor retarders and insulation.

C. Modified Asphaltic Insulation Adhesive: Insulation manufacturer's recommended modified asphaltic, asbestos-free, cold-applied adhesive formulated to adhere roof insulation to substrate or to another insulation layer.

D. Bead-Applied Urethane Insulation Adhesive: Insulation manufacturer's recommended bead-applied, low-rise, one- or multicomponent urethane adhesive formulated to adhere roof insulation to substrate or to another insulation layer.

E. Full-Spread Applied Urethane Insulation Adhesive: Insulation manufacturer's recommended spray-applied, low-rise, two-component urethane adhesive formulated to adhere roof insulation to substrate or to another insulation layer.

F. Roof Cement: Asbestos free, ASTM D2822/D2822M, Type I or Type II; or, ASTM D4586/D4586M, Type I or Type II.

2.4 ROOF AND DECK INSULATION

A. Roof and Deck Insulation, General: Preformed roof insulation boards approved by roofing manufacturer.

B. Polyisocyanurate Board Insulation: ASTM C1289, Type II, Class 1, Grade 2, faced with glass fiber reinforced cellulosic felt facers on both major surfaces of the core foam.

C. Cellular Glass Board Insulation: ASTM C552, Type IV, kraft-paper sheet faced.

D. Tapered Roof Insulation System:

1. Fabricate of mineral fiberboard, polyisocyanurate, perlite board, or cellular glass. Use only one insulation material for tapered sections. Use only factory-tapered insulation.

2. Cut to provide high and low points with crickets and slopes as shown.

3. Minimum thickness of tapered sections; 38 mm (1-1/2 inch).

4. Minimum slope 1/48 (1/4 inch per 12 inches).

2.5 INSULATION ACCESSORIES

A. Glass (Felt): ASTM D2178/D2178M, Type VI, heavy duty ply sheet.

ROOF AND DECK INSULATION

07 22 00 - 5

B. Cants and Tapered Edge Strips:

1. Wood Cant Strips: Refer to Section 06 10 00, ROUGH CARPENTRY.

2. Insulation Cant Strips: ASTM C208, Type II, Grade 1, cellulosic-fiber insulation board.

3. Tapered Edge Strips: 1/12 (1 inch per 12 inches), from 0 mm (0 inches), 300 mm to 450 mm

(12 inches to 18 inches) wide.

a. Cellulosic Fiberboard: ASTM C208.

b. Mineral Fiberboard: ASTM C726.

c. Perlite Board: ASTM C728.

C. Vapor Retarder:

1. Glass-Fiber Felts: ASTM D2178/D2178M, Type IV, asphalt impregnated.

2. Self-Adhering Sheet Vapor Retarder: ASTM D1970/D1970M, minimum 1.0 mm (40 mils) thick membrane of HDPE film fully coated with asphalt adhesive, or 0.76 to 1.0 mm (30 to

40 mils) thick membrane of butyl rubber based adhesive backed by a layer of high density cross-laminated polyethylene; maximum permeance rating of 6 ng/Pa/s/sq. m (0.1 perms).

D. Substrate Board:

1. Glass-Mat, Water-Resistant Gypsum Roof Board: ASTM C1177/C1177M, Type X, 16 mm

(5/8 inch) thick, factory primed.

E. Cover Board:

1. Glass-Mat, Water-Resistant Gypsum Roof Board: ASTM C1177/C1177M, 16 mm

(5/8 inch) thick, factory primed.

2.6 ACCESSORIES

A. Fasteners: Corrosion-resistant carbon steel fasteners and galvalume-coated steel or plastic round plates for fastening substrate board and insulation to roof deck.

B. Nails: ASTM F1667; type to suit application.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Comply with requirements of Division 07 roofing section.

3.2 PREPARATION

A. Examine and verify substrate suitability for product installation.

B. Protect existing construction and completed work from damage.

3.3 INSTALLATION - GENERAL

A. Install products according to manufacturer's instructions.

1. When manufacturer's instructions deviate from specifications, submit proposed resolution for

Contracting Officer's Representative consideration.

B. Comply with requirements of UL for insulated steel roof deck.

ROOF AND DECK INSULATION

07 22 00 - 6

C. Attach substrate board and other products to meet requirements of Division 07 roofing section.

3.4 SUBSTRATE BOARD INSTALLATION

A. Fasten substrate board to top flanges of steel decking to resist uplift pressures according requirements for specified roofing system.

1. Locate the long dimension edge joints solidly bearing on top of decking ribs.

3.5 VAPOR RETARDER INSTALLATION

A. Vapor Retarder Installation, General:

1. Install continuous vapor retarder on roof decks where indicated.

2. At vertical surfaces, turn up vapor retarder to top of insulation or base flashing.

3. Seal penetrations through vapor retarder with roof cement to prevent moisture entry from below.

3.6 INSULATION INSTALLATION

A. Insulation Installation, General:

1. Base Sheet: Where required by roofing system, install one lapped base sheet specified in

Division 07 roofing section by mechanically fastening to roofing substrate before installation of insulation.

B. Insulation Thickness:

1. Thickness of roof insulation shall match existing.

2. Insulation on Metal Decks: Provide insulation in minimum thickness recommended by insulation manufacturer to span deck flutes. Support edges of insulation on metal deck ribs.

3. When actual insulation thickness differs from drawings, coordinate alignment and location of roof drains, flashing, gravel stops, fascias and similar items.

4. Where tapered insulation is used, maintain insulation thickness at high points and roof edges shown on drawings.

a. Low Point Thickness: Minimum 38 mm (1-1/2 inches).

5. Use minimum two layers of insulation when required thickness is 68 mm (2.7 inch) or greater.

C. Lay insulating units with close joints, in regular courses and with end joints staggered.

1. Stagger joints between layers minimum 150 mm (6 inches).

D. Lay units with long dimension perpendicular to the rolled (longitudinal) direction of the roofing felt.

E. Seal cut edges at penetrations and at edges against blocking with bitumen or roof cement.

F. Cut to fit tightly against blocking or penetrations.

G. Cover all insulation installed on the same day; comply with temporary protection requirements of

Division 07 roofing section.

H. Installation Method:

1. Adhered Insulation:

ROOF AND DECK INSULATION

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a. Prime substrate as required.

b. Set each layer of insulation firmly in solid mopping of hot asphalt.

c. Set each layer of insulation firmly in ribbons of bead-applied insulation adhesive.

d. Set each layer of insulation firmly in uniform application of full-spread insulation adhesive.

3.7 COVER BOARD INSTALLATION

A. Install cover boards over insulation with long joints in continuous straight lines with staggered end joints.

B. Offset cover board joints from insulation joints 150 mm (6 inches), minimum.

C. Secure cover boards according to "Adhered Insulation" requirements.

- - E N D - -

ROOFING AND SIDING PANELS

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SECTION 07 40 00

PART 1 - GENERAL

1.1 DESCRIPTION:

A. This section specifies uninsulated metal wall and roof panels and composite metal wall and roof systems as shown on contract documents.

B. Provide a watertight Rout and Return Dry panel system, as detailed on the drawings. The panel system must consist of a dry gasketed interlocking extrusion system. Any panel system utilizing a continuous field applied exposed or concealed sealant within the joinery is unacceptable.

C. The panel system as detailed shall consist of concealed dry gasketed perimeter extrusions, extruded stiffeners, gaskets, fasteners and may consist of related flashings (where architectural drawings indicate they are to be furnished under this specification section), sealants between jamb panels and previously installed adjacent construction, and other miscellaneous accessories as required for a complete watertight installation. Assembly shall be water and airtight without reliance on a membrane or air barrier.

D. The panel system shall be designed to provide controlled drainage to the exterior face of the wall for any leakage of water occurring at joints and/or condensation taking place within the wall system.

1.2 RELATED WORK:

A. Sealant: Section 07 92 00, JOINT SEALANTS.

B. Color and texture of finish: Section 09 06 00, SCHEDULE FOR FINISHES.

1.3 QUALITY ASSURANCE:

A. Manufacturer’s Qualifications: Provide metal wall and roof panels and composite metal wall and roof systems products of a manufacturer regularly engaged for not less than five (5) years in the fabrication of metal panels and composite metal wall and roof systems of the type and design indicated.

B. Installer: A firm with three (3) years of successful experience with installation of roofing and siding panels of type and scope equivalent to Work of this Section. Submit installer qualifications.

1.4 PERFORMANCE REQUIRMENTS:

A. Load Combinations: Panel system shall be designed and installed to withstand the design wind load based on the International Building Code (IBC) and local building codes while maintaining allowable deflection, thermal movement and performance as defined within this specification.

B. Deflection Design Requirements: Panel system shall not exceed the following deflection limits when subjected to the design wind loads, acting inward and outward.

1. Perimeter Framing Deflection: Normal to the plane of the wall between structural supports, deflection of the attached perimeter-framing members shall not exceed L/175 of span length or 3/4", whichever is less.

2. Panel Deflection: Deflection at the mid span of the panel shall not exceed L/60.

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C. Thermal Movement: Make allowances for free and noiseless vertical and horizontal thermal movement due to the contraction and expansion of component parts, for an ambient temperature range from -20 degrees F to +160 degrees F with a maximum +180 degree F surface temperature.

D. System Test Requirements: Panel system furnished under this section shall have been tested. If comparable tests are not available, mockups shall be constructed, and tests performed. In either case, an independent laboratory approved by the architect shall conduct the tests. Test results shall meet or exceed the following without reliance on a membrane per AAMA 501:

1. ASTM E283 – Air Infiltration: When tested in accordance with ASTM E283, the air infiltration at 6.24 psf must not exceed 0.06 cfm per square foot of wall area.

2. ASTM E331 – Static Water Penetration: When tested at a differential static pressure of 15.0 psf for 15 minutes, in accordance with ASTM E331, any uncontrolled water passing into the room-side beyond the interior barrier of the wall system shall not be permitted. The panel system shall be designed to provide controlled drainage to the exterior face of the wall for any leakage of water occurring at joints and/or condensation taking place within the wall system.

3. AAMA 501.1 – Dynamic Water Penetration: Shall be tested in accordance with AAMA 501 with a slipstream velocity, creating a pressure on the wall equivalent to 15.0 psf with a water spray rate of 5 gallons per hour per square foot for 15 minutes with no uncontrolled water leakage to the room-side.

4. ASTM E330 – Structural Performance: When tested to a minimum design load of 30 PSF, the panel system must meet or exceed the following criteria:

a. Deflection do not exceed limitations as defined within this specification

b. Anchor points deflection shall not exceed 1/16 inch in any direction.

c. At 150% design load; no permanent deformation exceeding L/1000 or failure to structural members is permitted.

5. AAMA 501.4 – Interstory Drift: No failure or deterioration of the system when laterally racked to 3/4 inch in both directions and repeated for three (3) cycles. System must pass the ASTM E331 static water test as previously described, following the seismic racking.

E. Fire Performance: Provide Fire Retardant core composite material that has been evaluated and is in compliance with code requirements specified herein.

F. ACM System shall meet the requirements of the Intermediate Scale Multi-story test, NFPA 285.

1.5 SUBMITTALS:

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND

SAMPLES.

B. Samples: Metal panel, 152 mm (6 inch) square, showing finish, each color and texture.

1. Color Samples: Submit two (2), 3 inch x 4 inch samples of each color and finish.

2. Panel System Assembly: Submit a 16 inch x 16 inch sample of panel system, complete with factory applied edge treatment, fabricated into units representative of the actual system.

Sample need not be in the specified color.

C. Shop Drawings: Wall and roof panels, showing details of construction and installation. Collateral steel framing thickness and kind of material, closures, flashing, fastenings and related components and accessories. Show interfaces and relationships to work at other trades and continuity with adjacent thermal, weather, air and vapor barriers. Contractor shall submit complete coordination drawings

07 40 00 - 3 including details for all installation conditions required by the project for approval prior to commencing any work. Wall and roof panels must integrate with canopy, access doors and all mechanical and plumbing systems. Submit AutoCAD generated shop drawings showing profiles of panel units, details of forming, joint supports, anchorages, trim, flashings, sealants and accessories. Show details of weatherproofing at edge terminations, show elevations, and layout of entire work.

D. Manufacturer's Literature and Data: Wall and roof panels

E. Fire Test Report: Report of fire test by recognized testing laboratory for fire rating specified, showing details of construction.

F. Manufacturer’s Certificates: Indicating manufacturer’s qualifications specified.

G. Installer qualifications.

H. Manufacturer warranty.

1.6 QUALITY ASSURANCE:

A. Approval by Contracting Officer Representative (COR) is required of products of proposed manufacturer.

B. Certify manufacturer has ten (10) years continuous documented experience in fabrication of metal roofing and siding panels.

C. Source: For each material type required for work of this section, provide primary materials, which are products of one manufacturer. Provide secondary or accessory materials, which are acceptable to manufacturers of primary materials.

D. Installer: A firm with a minimum of five (5) years’ experience in type of work required by this section and which is acceptable to manufacturers of primary materials.

1.7 WARRANTY:

A. Construction Warranty: Comply with FAR clause 52.246-21 “Warranty of Construction”.

B. Manufacturer Warranty: Manufacturer shall warranty their metal roofing and wall panels for a minimum of ten (10) years from the date of installation and final acceptance by the Government.

Submit manufacturer warranty.

C. Warranty on Panel Finishes: Manufacturer’s shall warrant their roofing and wall panel finish and provide standard agreement to repair finish or replace metal panels that show evidence of deterioration of factory-applied finishes within specified warranty period.

1. Exposed Panel Finish: Deterioration includes, but is not limited to, the following:

a. Color fading more than 5 Hunter units when tested according to ASTM D2244.

b. Chalking in excess of a No. 8 rating when testing according to ASTM D4214.

c. Cracking, checking, peeling, or failure of paint to adhere to bare metal.

2. Finish Warranty Period: 20 years from date of installation and final acceptance by the COR.

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1.8 APPLICABLE PUBLICATIONS:

A. The publications listed below form a part of this specification to the extend referenced. The publications are referenced in the text by the basic designation only.

B. American Architecture Manufacturers Association (AAMA):

611-14 Anodized Architectural Aluminum

621-02 Voluntary Specifications for High Performance Organic Coatings on Coil

Coated Architectural Hot Dipped Galvanized (HDG) and Zinc-Aluminum

Coated Steel Substrates

2605-13 Voluntary Specification, Performance Requirements and Test

Procedures for Superior Performing Organic Coatings on Aluminum

Extrusions and Panels

C. American Iron and Steel Institute (AISI):

SG03-02 Cold-Formed Steel Design Manual

D. ASTM International (ASTM):

A463/A463M-10 Steel Sheet, Cold-Rolled, Aluminum-Coated, by the Hot-Dip Process

A653/A653M-13 Steel Sheet, Zinc-Coated (Galvanized), or Zinc-Iron Alloy-Coated

(Galvannealed) by the Hot-Dip Process.

A924/A924M-14 Steel Sheet, Metallic Coated by the Hot-Dip Process

A1008/A1008M-10 Steel, Sheet, Cold-Rolled, Carbon, Structural, High Strength Low Alloy

B209-14 Aluminum and Aluminum Alloy Sheet and Plate

B209M-14 Aluminum and Aluminum Alloy Sheet and Plate (Metric)

C553-13 Mineral Fiber Blanket Thermal Insulation for Commercial and Industrial

Applications

C591-13. Unfaced Preformed Rigid Cellular Polyisocyanurate Thermal Insulation

C612-14 Mineral Fiber Block and Board Thermal Insulation

C1396/C1396M Gypsum Board

D2244-14 Calculation of Color Tolerances and Color Differences from

Instrumentally Measured Color Coordinates

D4214-07 Test Methods for Evaluating the Degree of Chalking of Exterior Paint

Films

E119-14 Fire Test of Building Construction and Materials

E283-04(R2012) Test Method for Determining Rate of Air Leakage Through Exterior

Windows, Curtain Walls, and Doors Under Specified Pressure

Differences Across the Specimen

E331-00(R2009) Test Method for Water Penetration of Exterior Windows, Skylight, Doors, and Curtain Walls by Uniform Static Air Pressure Difference

07 40 00 - 5

E1592-10 Terminology Relating to Occupational Health and Safety

E1646-95(R2011) Test Method for Water Penetration of Exterior Metal Roof Panel Systems by Uniform Static Air Pressure Difference

E1680-11 Test Method for Rate of Air Leakage Through Exterior Metal Roof Panel

Systems

E1980-11 Calculating Solar Reflectance Index of Horizontal and Low-Sloped

Opaque Surfaces

E2140-01(R2009) Test Method for Water Penetration of Metal Roof Panel Systems by

Static Water Pressure Head

E. Cool Roof Rating Council (CRRC):

1 Standard-14

F. FM Global:

4471-10 Class 1 Panel Roofs

G. Underwriters Laboratories (UL):

580-05(R2013) Tests for Uplift Resistance of Roof Assemblies

Fire Resistance Directory

PART 2 - PRODUCTS

2.1 ACM MANUFACTURES AND APPROVED FABRICATORS

A. ACM Manufacturers:

1. Alucobond material manufactured by 3A Composites USA, Inc

2. Reynobond material manufactured by Alcoa

B. Approved System Fabricators

1. Elward Systems Corporation; located at 680 Harlan St., Lakewood CO; Phone: (800) 933- 5339; Request information: sales@elward.com; Web: www.elward.com

C. Alternate System Fabricators

1. Alternate system fabricators must meet all the criteria of this specification.

2. For LA USD and City of LA projects, ACM System Fabricator must hold a valid certificate as an approved fabricator as certified by the LOS ANGELES DEPARTMENT OF BUILDING

AND SAFETY.

3. The system fabricator must provide a signed and notarized affidavit from two (2) of the list ACM Manufacturers listed in this specification. The affidavit must state the following and must be on the ACM Manufacture letterhead:

a. Date of the affidavit must be within 3 months of submittal date.

b. The ACM System Fabricator is competent in quality fabrication procedures.

c. The ACM System Fabricator has purchased a sufficient quantity of ACM material from the ACM Manufacturer in the past 12 months to warrant approval.

d. The ACM System Fabricator is in good financial standing with the ACM Manufacture.

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2.2 ACM MATERIAL

A. ACM Material Composition: Two sheets of aluminum sandwiching a solid core of extruded thermoplastic material formed in a continuous process with no glues or adhesives between dissimilar materials. The core material shall be free of voids and/or air spaces and not contain foamed insulation material. Products that are laminated sheet by sheet in a batch process using glues or adhesives between materials shall not be acceptable.

B. ACM Thickness: 4mm

C. ACM Face Sheets: 0.020” thick aluminum

D. ACM Finish:

1. See drawings and coordinate with COR.

E. ACM Core:

1. Fire Retardant core material product acceptable for use:

F. Fire Performance:

1. ASTM E84: ACM shall have a flame spread index of 25 or less when tested in the maximum thickness intended for use.

2. ASTM E84: ACM shall have a smoke developed index of 450 or less when tested in the maximum thickness intended for use.

3. NFPA 285: ACM shall have an Intermediate Scale Multi-story test showing that the ACM material has met the conditions of acceptance.

G. Bond Integrity: Tested for resistance to delamination as follows:

1. Peel Strength (ASTM D1781): 22.5 in-lb/in (100 N-m/m) minimum as manufactured.

2. No degradation in bond performance after 8 hours of submersion in water at 212°F or 21 days of immersion in water at 70°F.

3. Thermally bonded to the core material in a continuous process under heat, pressure, and tension.

2.3 ALUMINUM EXTRUSION MATERIAL

A. Perimeter Extrusions

1. Alloy : AA-6063-T6

2. Color: See drawings and coordinate with COR.

3. Stiffeners

a. Alloy: AA-6063-T6

b. Color: Stiffeners shall be mill finish

2.4 WALL PANEL SYSTEM

A. Dry Joint System:

1. System must provide an open panel joint design with interlocking gasketed extrusions, designed to provide a weather resistant system utilizing internal chambers and cavities to prevent air and water infiltration. System shall maintain a dry cavity and perform its weatherability without reliance of an air/water membrane as tested per AAMA 501.

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2. The panel system shall consist of approved ACM from one of the suppliers above, and an engineered panel system of custom aluminum extrusions as specified herein

B. Perimeter Extrusions: Extruded aluminum with integral weather-stripping as detailed on drawings, so as to provide the following essential features:

1. Rout and return the ACM on all perimeters. “Continuous Edge Grip” (CEG) is not acceptable.

2. Exposed edge of the ACM shall be protected inside an extruded aluminum pocket.

3. Maximum overall panel thickness, including the attachment shim space, shall not exceed 2”.

4. The ACM shall be mechanically attached to all perimeter extrusions. The mechanical fastener must not penetrate any portion of the outer (exterior) skin of the aluminum composite material. Attachment of the ACM to the perimeter extrusions with structural silicone is not allowed.

5. Do not substitute sealants for dry gasketing shown at the metal panel joinery.

C. Stiffeners: Panel stiffeners to be spaced to maintain deflection limitations at design load.

Stiffeners are to be mechanically fastened to the perimeter extrusion and shall be bonded to the rear face of the ACM using structural silicone or high strength double-sided bonding tape of sufficient size and strength to maintain panel’s specified deflection under load.

D. Panel Joint Reveals: Joint size between the faces of the perimeter extrusions shall be 1/2 inch, nominal.

E. System Sealants: Sealants and gaskets within the panel system shall be per sealant manufacturer's standards.

F. Fasteners:

1. Attachment of the panel system to the primary panel structural supports shall be made using a Drill-Flex Fastener by ELCO Textron Inc.

2. Typical joinery shall be attached with concealed fasteners. When exposed fasteners are required in isolated conditions, the fastener shall be obscured in the panel joinery.

2.5 ALUMINUM PLATE AND SHEET:

A. ASTM B209M (B209).

2.6 FASTENERS:

A. Fasteners of size, type and holding strength as recommended by panel manufacturer.

2.7 FABRICATION:

A. General:

1. Furnish panels in one continuous length for full height, with no horizontal joints, except at cut-outs or openings as required for the passage of pipes, conduits, vents and the like.

2. Construct panels by pressing members together to form a structural unit with closed ends.

3. Overall thickness of panels is shown of the contract documents.

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4. Provide collateral steel framing, metal and bituminous closures, fastenings, flashing, clip, caulking, panel reinforcements for support of mechanical and electrical work as shown on the contract documents, and related components and accessories.

a. Sub-girts: 1.0 mm (0.0396 inches) thick galvanized steel hat channels deigned to receive panel fasteners or clips.

b. Accessories, fastenings, and flashings to be the same material and finish as the panels. Thickness and installation of accessories and flashing to be as recommended by the panel manufacturer.

B. Shop fabricate panels to sizes and joint configurations as indicated on the approved ACM System Fabricator’s shop drawings. Field fabrication of panels is not allowed.

C. Fabrication Tolerances: Measured when surface temperature is at 70°F

1. Width: +/- 0.040 inches

2. Length: +/- 0.040 inches

3. Squareness: +/- 0.070 inches

PART 3 - EXECUTION

3.1 INSTALLATION:

A. Examine the substrate and ensure that the substrate is structurally sound and within the tolerances specified within this section. If there are deficiencies which inhibit cladding insulation, do not proceed with cladding installation until deficiencies have been addressed.

B. Substrate Tolerances: The General Contractor is responsible for providing a substrate with a tolerance of 1/4 inch in 20 feet, on level, plumb, and location control lines as indicated and within 1/8 inch offset of adjoining faces of alignment of matching profiles tolerances are noncumulative

C. General: Install panels in accordance with the manufacturer's approved erection instructions and diagrams, except as specified otherwise.

D. Install panels in full and firm contact with supports and with each other at side and end laps.

E. Where panels are cut in the field, or where factory applied coverings or coatings are abraded or damaged in handling or installation, make finish repairs with material of the same type and color as the weather coating, before being installed.

F. Seal cut ends and edges, including those at openings through the sheets.

G. Correct defects or errors in the materials in a manner approved by the COR.

H. Replace defective materials which cannot be corrected with nondefective material.

I. Provide molded closure strips where indicated and whenever sheets terminate with open ends after installation.

J. Wall Panels:

1. Apply panels with the configuration in a vertical position.

2. Provide panels in the configuration shown on the drawings.

3. Seal side and end laps with joint sealing material.

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4. Flash and seal walls at the base, at the top, around windows, door frames, framed louvers, and other similar openings. Install closure strips, flashings, and sealing material in an approved manner that will assure complete weather tightness.

5. Flashing is not required where approved "self-flashing" panels are used.

K. Roof Panels:

1. Apply roofing panels with the configurations parallel to the slope of the roof. Provide roofing panels in the configuration shown on the drawings.

2. Lay side laps away from the prevailing wind, and seal side and end laps with joint sealing material.

3. Flash and seal the roof at the ridge, at eaves and rakes, at projections through the roof, and elsewhere as necessary.

4. Install closure strips, flashing, and sealing material in a manner that will assure complete weather tightness.

L. Flashing:

1. Provide flashing and related closures and accessories in connection with the preformed metal panels as indicated and as necessary to provide a watertight installation.

2. Install details of installation, which are not indicated, in accordance with the panel manufacturer's printed instruction and details, or the approved shop drawings.

3. Allow for expansion and contraction of flashing.

M. Fasteners:

1. Space fasteners in accordance with the manufacturer's recommendations, and as necessary to withstand the design loads indicated.

2. Install fasteners in valleys or crowns as recommended by the manufacturer of the panel being used.

3. Install fasteners in straight lines within a tolerance of 13 mm (1/2-inch) in the length of a bay.

4. Drive exposed penetrating type fasteners normal to the surface, and to a uniform depth to seat gasketed washers properly, and drive so as not to damage factory applied coating.

5. Exercise care in drilling pilot holes for fastenings to keep drills perpendicular and centered in valleys, or crowns, as applicable. After drilling, remove metal filings and burrs from holes prior to installing fasteners and washers. Do not torque fasteners to exceed values recommended by the manufacturer.

6. Remove panels deformed or otherwise damaged by over-torqued fastenings, and provide new panels.

7. Remove metal shavings and filings from roofs on completion to prevent rusting and discoloration of the panels.

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3.2 ISOLATION OF ALUMINUM:

A. Isolate aluminum in contact with or fastened to dissimilar metals other than stainless steel, white bronze, or other metal compatible with aluminum by one of the following:

1. Painting the dissimilar metal with a prime coat of Zinc-Molybdate followed by two coats of aluminum paint.

2. Placing a non-abrasive tape or gasket between the aluminum and the…