Project 583-24-527 - DIVISION 07 - Specification Updates 4-29-26_.pdf

Richard L Roudebush Veterans Affairs Medical Center.

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DEPARTMENT OF VETERANS AFFAIRS

VHA MASTER SPECIFICATIONS

TABLE OF CONTENTS

Section 00 01 10

SECTION NO DIVISION AND SECTION TITLES DATE

DIVISION 00 - SPECIAL SECTIONS

00 01 15 List of Drawing Sheets 05-20 00 11 21 Request for Proposal to Design Build 09-21

DIVISION 01 - GENERAL REQUIREMENTS

01 00 00 General Requirements 11-21 01 32 16.15 Project Schedules (Small Projects – Design/Bid/Build 01-24 01 33 23 Shop Drawings, Product Data, and Samples 11-23 01 35 26 Safety Requirements for Major Projects 12-23 01 42 19 Reference Standards 11-20 01 58 16 Temporary Interior Signage 07-15 01 74 19 Construction Waste Management 04-22 01 81 13 Sustainable Construction Requirements 10-17

DIVISION 02 – EXISTING CONDITIONS

02 41 00 Demolition 08-17

DIVISION 06 – WOOD, PLASTICS AND COMPOSITES

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

07 01 50.19 Preparation for Re-roofing 01-21 07 53 23 Ethylene-Propylene-Diene-Monomer Roofing 01-21 07 72 00 Roof Accessories 01-21 07 84 00 Firestopping 01-21 07 92 00 Joint Sealants 04-22

DIVISION 08 - OPENINGS

08 34 53 Security Doors and Frames 01-21 08 71 00 Door Hardware 01-21 08 73 13.11 Automatic Door Opener 01-21

DIVISION 09 – FINISHES

09 22 16 Non-Structural Metal Framing 06-18 09 29 00 Gypsum Board 04-20 09 67 23.30 Resinous (Epoxy Resin Composition) Mortar Flooring

(RES-3)

11-23

09 91 00 Painting 01-21

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SECTION NO DIVISION AND SECTION TITLES DATE

DIVISION 10 – SPECIALTIES

DIVISION 11 – EQUIPMENT

DIVISION 12 – FURNISHINGS

DIVISION 13 - SPECIAL CONSTRUCTION

DIVISION 21- FIRE SUPPRESSION

DIVISION 22 – PLUMBING

DIVISION 23 – HEATING, VENTILATING, AND AIR

CONDITIONING (HVAC)

23 05 11 Common Work Results for HVAC 03-23 23 05 41 Noise and Vibration Control for HVAC Piping and

Equipment 03-23

23 05 93 Testing, Adjusting, and Balancing for HVAC 03-23 23 09 23 Direct-Digital Control System for HVAC 03-23 23 21 13 Hydronic Piping 03-23 23 31 00 HVAC Ducts and Casings 03-23 23 34 00 HVAC Fans 03-23 23 36 00 Air Terminal Units 03-23 23 37 00 Air Outlets and Inlets 03-23 23 40 00 HVAC Air Cleaning Devices 03-23

DIVISION 26 – ELECTRICAL

26 05 11 Requirements for Electrical Installations 11-22 26 05 19 Low-Voltage Electrical Power Conductors and Cables 11-22 26 05 26 Grounding and Bonding for Electrical Systems 11-22 26 05 33 Raceway and Boxes for Electrical Systems 11-22 26 08 00 Commissioning Electrical Systems 11-22 26 09 23 Lighting Controls 11-22 26 24 16 Panelboards 11-22 26 27 26 Wiring Devices 11-22 26 29 11 Motor Controllers 11-22 26 51 00 Interior Lighting 11-22

DIVISION 27 – COMMUNICATIONS

DIVISION 28 – ELECTRONIC SAFETY AND SECURITY

28 05 00 Common Work Results for Electronic Safety and Security 04-18 28 05 13 Conductors and Cables for Electronic Safety and

Security 10-18

28 05 26 Grounding and Bonding for Electronic Safety and Security

09-11

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SECTION 07 01 50.19

PREPARATION FOR RE-ROOFING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Complete roof removal for new roof system installation.

2. Partial roof removal for new roof system installation.

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

4. Existing roofing membrane preparation for new roofing installation.

B. Existing Roofing System: EPDM System components include:

1. Roof insulation .

2. Roofing membrane.

3. Cover board.

1.2 RELATED WORK

A. Section 07 53 23, ETHYLENE-PROPYLENE-DIENE-MONOMER (EPDM) ROOFING: New

Roofing System.

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

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 (R2016)............Standard Field Test Procedure for Determining the Withdrawal Resistance of Roofing Fasteners.

C. American Society for Nondestructive Testing (ASNT):

SNT-TC-1A (2019)........Personnel Qualification and Certification for

Nondestructive Testing.

D. ASTM International (ASTM):

C208-12(2017)e2.........Cellulosic Fiber Insulating Board.

C578-19.................Rigid, Cellular Polystyrene Thermal Insulation.

C728-17a................Perlite Thermal Insulation Board.

C1177/C1177M-17.........Glass Mat Gypsum Substrate for Use as

Sheathing.

C1153-10(2015)..........Location of Wet Insulation in Roofing Systems

Using Infrared Imaging.

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C1278/C1278M-17.........Standard Specification Fiber-Reinforced Gypsum

Panel.

D4263-83(2018)..........Indicating Moisture in Concrete by the Plastic

Sheet Method.

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

DOC PS 1-19.............Structural Plywood.

DOC PS 2-18.............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.

SPEC WRITER NOTE: Edit participant list to ensure entities influencing outcome attend.

1. Required Participants:

a. Contracting Officer's Representative.

b. //Architect/Engineer. //

c. //Inspection and Testing Agency. //

d. Contractor.

e. Installer.

SPEC WRITER NOTE: Include manufacturer's representative when work affects existing warranted roof.

f. //Manufacturer's field representative. //

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

SPEC WRITER NOTE: Edit meeting agenda to incorporate project specific topics.

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.

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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.

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.

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.

1.6 QUALITY ASSURANCE

A. Installer Qualifications:

1. Same installer as Section 07 53 23, ETHYLENE-PROPYLENE-DIENE-MONOMER

(EPDM) 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. Verify occupants are evacuated from affected building areas when working on structurally impaired roof decking above occupied areas.

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

B. Existing Roofing Available Information:

1. The following are available for Contractor reference:

a. Construction drawings and project manual.

2. Examine available information before beginning work of this section.

C. Weather Limitations: Proceed with reroofing preparation only during dry weather conditions as specified for new roofing installation in Section

07 53 23, ETHYLENE-PROPYLENE-DIENE-MONOMER (EPDM)

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

D. Hazardous materials are not expected in existing roofing system.

1.8 WARRANTY

SPEC WRITER NOTE: Always retain construction warranty. FAR includes Contractor's one year labor and material warranty.

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

SPEC WRITER NOTE: Retain this article if portions of existing roof still under warranty are to remain or if an adjoining existing roof is under warranty.

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, FLASHING AND SHEET METAL.

D. Temporary Protection Materials:

1. Expanded Polystyrene (EPS) Insulation: ASTM C578-19.

2. Plywood: NIST DOC PS 1-19, Grade CD Exposure 1-18.

3. Oriented Strand Board (OSB): NIST DOC PS 2-18, Exposure 1.

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

F. Recover Board: One of the following:

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1. Insulation: See Section 07 22 00, ROOF AND DECK INSULATION.

2. Fiber Board: ASTM C208-12(2017)e2, Type II, fiber board; 13 mm

(1/2 inch) thick.

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

PART 3 - EXECUTION

3.1 EXAMINATION

A. Infrared Roof Moisture Survey: Ground-based, walk-over type performed according to ASTM C1153-10(2015).

1. Record the entire survey on DVD and provide one copy to Contracting Officer's Representative with report.

2. Include in report thermograms of suspect areas and corresponding daytime photos of same locations.

3. Conduct inspection by NDT test technician certified to at least Level 2 in Thermal/Infrared test method according to ASNT SNT-TC-1A.

4. Mark out roof areas determined to be wet to indicate areas to be removed.

3.2 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.

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

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

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3.3 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.

3.4 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, and substrate board.

2. Remove or cut-off roofing system fasteners.

3.5 ROOFING MEMBRANE AND SELECTIVE ROOFING SYSTEM COMPONENT REMOVAL

A. Remove existing roofing membrane, only, in locations and to extent indicated on drawings.

B. Visually inspect cover board, roof insulation, and substrate board for moisture immediately after roof membrane removal.

1. Coordinate with Contracting Officer's Representative to observe inspections.

2. Identify wet roofing system components required to be removed.

3. Mark roofing system removal locations and extents.

C. Remove wet roofing system components.

1. Remove or cut-off roofing system fasteners when removals expose structural roof deck.

D. Patch selective roofing system removals immediately after inspection and repair.

E. Install patching materials to match existing roofing system.

F. Patch roofing membrane to maintain building watertight, unless new roofing membrane is installed same day as removal and repair.

3.6 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 D4263-83(2018) each day for each separate roof area.

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

3. Secure roof deck with additional fastenings as indicated on drawings. determined by Contracting Officer's Representative.

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4. Replace roof deck as indicated on drawings. determined by Contracting Officer's Representative.

3.7 TEMPORARY ROOFING

A. Install temporary roofing to maintain building watertight.

B. Remove temporary roofing before installing new roofing.

C. Prepare temporary roofing to receive new roofing.

3.8 EXISTING MEMBRANE PREPARATION FOR NEW ROOFING

A. Remove existing roofing surface projections and irregularities. Produce smooth surface to receive recover boards.

1. Broom clean existing surface.

3.9 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 FLASHING AND SHEET METAL.

3.10 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(2016).

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.

3.11 DISPOSAL

A. Collect waste materials in containers.

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

C. Legally dispose of waste materials.

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SECTION 07 53 23

ETHYLENE-PROPYLENE-DIENE-MONOMER ROOFING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Ethylene Propylene Diene Monomer (EPDM) sheet roofing adhered to concrete roof deck.

2. Fire rated roof system.

1.2 APPLICABLE PUBLICATIONS

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

B. American National Standards Institute/Single-Ply Roofing Institute

(ANSI/SPRI):

FX-1-16.................Standard Field Test Procedure for Determining the Withdrawal Resistance of Roofing Fasteners.

RP-4 2019...............Wind Design Standard for Ballasted Single-ply

Roofing Systems.

C. American Society of Civil Engineers/Structural Engineering Institute

(ASCE/SEI):

7-16....................Minimum Design Loads For Buildings and Other

Structures.

D. American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE):

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

Residential Buildings.

E. ASTM International (ASTM):

A276/A276M-17...........Stainless Steel Bars and Shapes.

B209-14.................Aluminum and Aluminum-Alloy Sheet and Plate.

B209M-14................Aluminum and Aluminum-Alloy Sheet and Plate

(Metric).

C67-20..................Sampling and Testing Brick and Structural Clay

Tile.

C140/C140M-20a..........Sampling and Testing Concrete Masonry Units and

Related Units.

C936/C936M-20...........Solid Concrete Interlocking Paving Units.

C1371-15................Determination of Emittance of Materials Near

Room Temperature Using Portable Emissometers.

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C1549-16................Determination of Solar Reflectance Near Ambient

Temperature Using a Portable Solar

Reflectometer.

D751-19.................Standard Test Methods for Coated Fabrics.

D1248-16................Polyethylene Plastics Extrusion Materials for

Wire and Cable.

D1876-08(2015)e1........Peel Resistance of Adhesives (T-Peel Test).

D2103-15................Polyethylene Film and Sheeting.

D2240-15e1..............Rubber Property-Durometer Hardness.

D3884-09(2017)..........Abrasion Resistance of Textile Fabrics (Rotary

Platform, Double-Head Method).

D4263-83(2018)..........Indicating Moisture in Concrete by the Plastic

Sheet Method.

D4586/D4586M-07(2018)...Asphalt Roof Cement, Asbestos-Free.

D4637/D4637M-15.........EPDM Sheet Used In Single-Ply Roof Membrane.

E96/E96M-16.............Water Vapor Transmission of Materials.

E408-13(2019)...........Total Normal Emittance of Surfaces Using

Inspection-Meter Techniques.

E1918-16................Measuring Solar Reflectance of Horizontal and

Low-Sloped Surfaces in the Field.

E1980-11(2019)..........Measuring Solar Reflectance of Horizontal and

Low-Sloped Surfaces in the Field.

G21-15..................Resistance of Synthetic Polymeric Materials to

Fungi.

F. Cool Roof Rating Council (CRRC):

1-20....................Product Rating Program.

G. Federal Specifications (Fed. Spec.):

UU-B-790A...............Building Paper, Vegetable Fiber: (Kraft, Waterproofed, Water Repellent and Fire

Resistant).

H. Florida Department of Business and Professional Regulation (FL):

Approved Product Approval.

I. National Roofing Contractors Association (NRCA):

Manual-19...............The NRCA Roofing Manual: Membrane Roof Systems.

J. U.S. Department of Agriculture (USDA): USDA BioPreferred Catalog.

K. UL LLC (UL):

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580-06.................. Tests for Uplift Resistance of Roof

Assemblies.

1897-20.................Uplift Tests for Roof Covering Systems.

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

DOC PS 1-19.............Structural Plywood.

DOC PS 2-18.............Performance Standard for Wood-Based

Structural-Use Panels.

M. U.S. Environmental Protection Agency (EPA):

Energy Star.............ENERGY STAR Program Requirements for Roof

Products Version 3.0.

1.3 PREINSTALLATION MEETINGS

A. Conduct preinstallation meeting at the Project site minimum 30 days before beginning Work of this section.

1. Required Participants:

a. Contracting Officer's Representative.

b. Architect/Engineer.

c. Contractor.

d. Installer.

e. Other installers responsible for adjacent and intersecting work, including roof deck, flashings, roof specialties, roof accessories, utility penetrations, rooftop curbs and equipment, lightning protection.

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

a. Installation schedule.

b. Installation sequence.

c. Preparatory work.

d. Protection before, during, and after installation.

e. Installation.

f. Terminations.

g. Transitions and connections to other work.

h. Inspecting and testing.

i. Other items affecting successful completion.

j. Pull out test of fasteners.

k. Material storage, including roof deck load limitations.

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

1.4 SUBMITTALS

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

B. Submittal Drawings:

1. Roofing membrane layout.

C. Manufacturer's Literature and Data:

1. Description of each product.

2. Minimum fastener pull out resistance.

3. Installation instructions.

4. Warranty.

5. Product Data for Federally-Mandated Bio-Based Materials: For roof materials, indicating USDA designation and compliance with definitions for bio-based products, Rapidly Renewable Materials, and certified sustainable wood content.

D. Qualifications: Substantiate qualifications comply with specifications.

E. Field quality control reports.

F. Temporary protection plan. Include list of proposed temporary materials.

1.5 QUALITY ASSURANCE

A. Installer Qualifications:

1. Approved by roofing system manufacturer as installer for roofing system with specified warranty.

2. Regularly installs specified products.

3. Installed specified products with satisfactory service on five similar installations for minimum five years.

4. Employs full-time supervisors experienced installing specified system and able to communicate with Contracting Officer's

Representative and installer's personnel.

B. Manufacturer's Field Representative:

1. Manufacturer's full-time technical employee or independent roofing inspector.

2. Individual certified by Roof Consultants Institute as Registered Roof Observer.

1.6 DELIVERY

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

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

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

1.7 STORAGE AND HANDLING

A. Comply with NRCA Manual storage and handling requirements.

B. Store products indoors in dry, weathertight facility.

C. Store adhesives according to manufacturer's instructions.

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

E. Products stored on the roof deck must not cause permanent deck deflection.

1.8 FIELD CONDITIONS

A. Environment:

1. Weather Limitations: Install roofing only during dry current and forecasted weather conditions.

1.9 WARRANTY

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

Construction."

B. Manufacturer's Warranty: Warrant roofing system against material and manufacturing defects and agree to repair any leak caused by a defect in the roofing system materials or workmanship of the installer.

1. Warranty Period: 10 years.

PART 2 - PRODUCTS

2.1 SYSTEM DESCRIPTION

A. Roofing System: Adhered roofing membrane, base flashing, roof insulation, fasteners, cover boards, substrate boards copings.

2.2 PRODUCTS - GENERAL

A. Provide roof system components from one manufacturer.

2.3 MEMBRANE ACCESSORY MATERIALS

A. Sheet roofing manufacturer's specified products.

B. Flashing Sheet: Manufacturer's standard; same material, and color as roofing membrane.

1. Self-curing EPDM flashing adaptable to irregular shapes and surfaces.

2. Minimum Thickness: 1.5 mm (0.060 inch).

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C. Factory Formed Flashings: Inside and outside corners, pipe boots, and other special flashing shapes to minimize field fabrication.

D. Splice Adhesive or Tape: Manufacturer's standard for roofing membrane and flashing sheet.

E. Splice Lap Sealant: Liquid EPDM rubber for exposed lap edge.

F. Bonding Adhesive: Manufacturer's standard to suit substrates.

G. Termination Bars: Manufacturer's standard, stainless steel or aluminum, 25 mm wide by 3 mm thick (1 inch wide by 1/8 inch thick) factory drilled for fasteners.

H. Battens: Manufacturer's standard, galvannealed or galvanized steel, 25 mm wide by 1.3 mm thick (1 inch wide by 0.05 inch thick), factory punched for fasteners.

I. Pipe Compression Clamp:

1. Stainless steel drawband.

2. Worm drive clamp device.

J. Fasteners: Manufacturer's standard coated steel with metal or plastic plates, to suit application.

K. Fastener Sealer: One part elastomeric adhesive sealant.

L. Temporary Closure Sealers (Night Sealant): Polyurethane two part sealer.

M. Primers, Splice Tapes, Cleaners, and Butyl Rubber Seals: As specified by roof membrane manufacturer.

N. Asphalt Roof Cement: ASTM D4586/D4586M.

2.4 WALKWAY PADS

A. Manufacturer's standard, slip resistant, approximately 30 by 30 inches square and 3/16 inch thick with rounded corners.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine and verify substrate suitability for product installation with roofing installer and roofing inspector present.

1. Verify roof penetrations are complete, secured against movement.

2. Verify roof deck is adequately secured to resist wind uplift.

3. Verify roof deck is clean, dry, and in-plane ready to receive roofing system.

B. Correct unsatisfactory conditions before beginning roofing work.

3.2 PREPARATION

A. Complete roof deck construction before beginning roofing work:

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1. Curbs, blocking, edge strips, and other components to which roofing and base flashing is attached in place ready to receive insulation and roofing.

2. Coordinate roofing membrane installation with flashing work and roof insulation work so insulation and flashing are installed concurrently to permit continuous roofing operations.

3. Complete installation of flashing, insulation, and roofing in same day except for the area where temporary protection is required when work is stopped for inclement weather or end of work day.

B. Dry out surfaces that become wet from any cause during progress of the work before roofing work is resumed. Apply materials to dry substrates, only.

C. Broom clean roof decks. Remove dust, dirt and debris.

D. Remove projections capable of damaging roofing materials.

E. Concrete Decks, except Insulating Concrete:

1. Test concrete decks for moisture according to ASTM D4263 before installing roofing materials.

2. Prime concrete decks. Keep primer back 100 mm (f4our inches) from precast concrete deck joints.

3. Allow primer to dry before application of bitumen.

F. Insulating Concrete Decks:

1. Allow deck to dry out minimum five days after installation before installing roofing materials.

2. Allow additional drying time when precipitation occurs before installing roofing materials.

G. Existing Membrane Roofs and Repair Areas:

1. Comply with Section 07 01 50.19 PREPARATION FOR REROOFING.

3.3 TEMPORARY PROTECTION

A. Install temporary protection consisting of a temporary seal and water cut-offs at the end of each day's work and when work is halted for an indefinite period or work is stopped when precipitation is imminent.

B. Install temporary cap flashing over top of base flashings where permanent flashings are not in place to protect against water intrusion into roofing system. Securely anchor in place to prevent blow off and damage by construction activities.

C. Temporarily seal exposed insulation surfaces within roofing membrane.

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1. Apply temporary seal and water cut off by extending roofing membrane beyond insulation and securely embedding edge of the roofing membrane in 6 mm (1/4 inch) thick by 50 mm (2 inches) wide strip of temporary closure sealant. Weight roofing membrane edge with sandbags, to prevent displacement; space sandbags maximum 2400 mm

(8 feet) on center.

2. Direct water away from work. Provide drainage, preventing water accumulation.

3. Check daily to ensure temporary seal remains watertight. Reseal open areas and weight down.

D. Before the work resumes, cut off and discard portions of roof membrane in contact with temporary seal.

1. Cut minimum 150 mm (6 inches) back from sealed edges and surfaces.

E. Remove sandbags and store for reuse.

3.4 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 NRCA Manual installation requirements.

C. Do not allow membrane and flashing to contact surfaces contaminated with asphalt, coal tar, oil, grease, or other substances incompatible with EPDM.

3.5 ROOFING INSTALLATION

A. Install membrane perpendicular to long dimension of insulation boards.

B. Begin membrane installation at roof low point and work towards high point. Lap membrane shingled in water flow direction.

C. Position membrane free of buckles and wrinkles.

D. Roll membrane out; inspect for defects as membrane is unrolled. Remove defective areas:

1. Allow 30 minutes for membrane to relax before proceeding.

2. Lap edges and ends minimum 75 mm (3 inches). Clean lap surfaces.

3. Install seam adhesive or tape, unless furnished with factory applied adhesive strips. Apply pressure to develop full adhesion.

4. Check seams to ensure continuous adhesion and correct defects.

5. Finish seam edges with beveled bead of lap sealant.

6. Finish seams same day as membrane is installed.

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7. Anchor membrane perimeter to roof deck and parapet wall as indicated on drawings.

E. Membrane Perimeter Anchorage:

1. Install batten with fasteners at perimeter of each roof area, curb flashing, expansion joints and similar penetrations on top of roof membrane as indicated on drawings.

F. Adhered System Installation:

1. Apply bonding adhesive in quantities required by roofing membrane manufacturer.

2. Fold sheet back on itself, clean and coat the bottom side of the membrane and the top of substrate with adhesive. Do not coat the lap joint area.

3. After adhesive has set according to adhesive manufacturer's instructions, roll roofing membrane into adhesive minimizing voids and wrinkles.

4. Repeat for other half of sheet.

5. Cut voids and wrinkles to lay flat. Clean and patch cut area.

3.6 FLASHING INSTALLATION

A. Install flashings on same day as roofing membrane is installed. When flashing cannot be completely installed in one day, complete installation until flashing is watertight and provide temporary covers or seals.

B. Installing Base Flashing and Pipe Flashing:

1. Install flashing sheet to pipes, walls and curbs to minimum 200 mm

(8 inches) height above roof surfaces and extend roofing manufacturer's standard lap dimension onto roofing membranes.

a. Adhere flashing with bonding adhesive.

b. Form inside and outside corners of flashing sheet according to

NRCA Manual. Form pipe flashing according to NRCA Manual.

c. Lap ends roofing manufacturer's standard dimension.

d. Adhesively splice flashing sheets together, and adhesively splice flashing sheets to roofing membranes. Finish exposed edges with lap sealant.

2. Anchor top of flashing to walls and curbs with fasteners spaced maximum 150 mm (6 inches) on center. Use surface mounted fastening strip with sealant on ducts. Use pipe clamps on pipes or other round penetrations.

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3. Apply sealant to top edge of flashing.

C. Installing Building Expansion Joints:

1. Install base flashing on curbs as specified.

2. Coordinate installation with roof expansion joint system.

3. Install flexible tubing 1-1/2 times width of joint centered over joint. Cover tubing with flashing sheet adhered to base flashing and lapping base flashing roofing manufacturer's standard dimension.

Finish edges of laps with lap sealant.

D. Repairs to Membrane and Flashings:

1. Remove sections of roofing membrane or flashing sheet that are creased, wrinkled, or fishmouthed.

2. Cover removed areas, cuts and damaged areas with patch extending 100 mm (4 inches) beyond damaged, cut, or removed area. Adhesively splice patch to roofing membrane or flashing sheet. Finish edge of lap with lap sealant.

3.7 WALKWAY PAD INSTALLATION

A. Clean membrane where pads are applied.

B. Adhere pads to membrane with splicing cement.

C. Layout with minimum 25 mm (1 inch) and maximum 50 mm (2 inch) space between pads.

3.8 FIELD QUALITY CONTROL

A. Manufacturer Services:

1. Inspect initial installation, installation in progress, and completed work.

2. Issue supplemental installation instructions necessitated by field conditions.

3. Prepare and submit inspection reports.

4. Certify completed installation complies with manufacturer's instructions and warranty requirements.

3.9 CLEANING

A. Remove excess adhesive before adhesive sets.

B. Clean exposed roofing surfaces. Remove contaminants and stains.

3.10 PROTECTION

A. Protect roofing system from construction operations.

1. Protect roofing system when used for subsequent work platform, materials storage, or staging.

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2. Distribute scaffolding loads to exert maximum 50 percent roofing system materials compressive strength.

B. Loose lay temporary insulation board overlaid with plywood or OSB.

1. Weight boards to secure against wind uplift.

C. Remove protection when directed by Contacting Officer's Representative.

D. Repair damage.

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SECTION 07 72 00

ROOF ACCESSORIES

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies roof hatches; equipment supports; gravity ventilators; and metal grating roof walkway system.

1.2 RELATED WORK

A. Section 01 81 13, SUSTAINABLE CONSTRUCTION REQUIREMENTS: Sustainable

Design Requirements.

B. Section 07 21 13, THERMAL INSULATION: General insulation.

C. Section 07 92 00, JOINT SEALANTS: Sealant material and installation.

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

1.3 QUALITY ASSURANCE

A. Provide roof accessories that are the products of manufacturers regularly engaged in producing the kinds of products specified.

B. For each accessory type provide the same product made by the same manufacturer.

C. Assemble each accessory to the greatest extent possible before delivery to the site.

1.4 SUBMITTALS

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

DATA, AND SAMPLES.

B. Samples: Submit representative sample panel of color anodized aluminum not less than 101 x 101 mm (4 x 4 inches). For extrusions, submit width not less than section to be installed. Show coating with integral color and texture and include manufacturer's identifying label.

C. Shop Drawings: Each item specified showing design, details of construction, installation and fastenings.

D. Manufacturer's Literature and Data: Each item specified.

E. Certificates: Stating that aluminum has been given specified thickness of anodizing.

1.5 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. ASTM International (ASTM):

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A653/A653M-20...........Steel Sheet, Zinc-Coated (Galvanized) or Zinc-

Iron Alloy-Coated (Galvannealed) By the Hot-Dip

Process

B209-14.................Aluminum and Aluminum-Alloy Sheet and Plate

B209M-14................Aluminum and Aluminum-Alloy Sheet and Plate

(Metric)

B221-14.................Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and Tubes

B221M-13................Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and Tubes (Metric)

C726-17.................Mineral Wool Roof Insulation Board

C1289-19................Faced Rigid Cellular Polyisocyanurate Thermal

Insulation Board

D1187/D1187M-97(2018)...Asphalt-Base Emulsions for Use as Protective

Coatings for Metal

C. National Association of Architectural Metal Manufacturers (NAAMM):

AMP 500-06 Series.......Metal Finishes Manual

D. American Architectural Manufacturers Association (AAMA):

2603-20.................Performance Requirements and Test Procedures for Pigmented Organic Coatings on Aluminum

Extrusions and Panels (with Coil Coating

Appendix).

2605-20.................Performance Requirements and Test Procedures for Superior Performing Organic Coatings on

Architectural Extrusions and Panels (with Coil

Coating Appendix).

611-14..................Anodized Architectural Aluminum

621-02..................High Performance Organic Coatings on Coil

Coated Architectural Hot Dipped Galvanized

(HDG) and Zinc-Aluminum Coated Steel Substrates

E. American Society of Civil Engineers (ASCE):

ASCE/SEI 7-16...........Minimum Design Loads and Associated Criteria for Buildings and Other Structures

F. U.S. Occupational Safety and Health Standards (OSHA):

29 CFR 1910 Subpart D... Walking-Working Surfaces (1910.21-1910.30)

PART 2 - PRODUCTS

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2.1 MATERIALS

A. Aluminum, Extruded: ASTM B221M (B221).

B. Aluminum Sheet: ASTM B209M (B209).

C. Galvanized Sheet Steel: ASTM A653/A653M; G-90 coating.

D. Asphalt Coating: ASTM D1187/D1187M, Type I, quick setting.

2.2 EQUIPMENT SUPPORTS

A. Fabricate equipment supports from 1.3 mm (0.0516 inch) thick galvanized

ASTM A653/A653M steel fabricate with welded corners and with seams joined by continuous water and air tight welds.

B. Equipment supports to be internally reinforced with angles 1.22 m (48 inches) on center.

C. Form exterior curb with integral base D. Use galvanized steel liners for curbs having inside dimension over 16 inches.

E. Internally insulate with 1-1/2 inch glass-fiber board insulation (ASTM C726).

F. Fabricate curb with a minimum height of 16 inches above roof surface.

G. Attach preservative treated wood nailers to top of curb 2 inch 2 inch minimum nominal size on curb with openings and 2 inch thick, width of curb up to 16 inches on equipment support curbs.

H. Make size of supports suit size of equipment furnished, with height as shown on construction documents, but not less than 8 inches above roof surface.

I. Top of Equipment Supports: Level with pitch built into curb when deck slopes. Equip supports with water diverter or cricket on side that obstructs water flow.

2.3 FINISH:

A. In accordance with NAAMM AMP 500 Series.

B. Baked-Enamel or Powder-Coat Finish: AAMA 2603 except with a minimum dry film thickness of 0.04 mm (1.5 mils). Comply with coating manufacturer’s written instructions for cleaning, conversion coating, and applying and baking finish.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install roof specialties where indicated on construction documents.

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B. Secure with fasteners in accordance with manufacture's printed installation instructions and approved shop drawings unless shown otherwise.

C. Coordinate to install insulation where shown; see Section 07 21 13, THERMAL INSULATION and Section 07 22 00, ROOF AND DECK INSULATION.

D. Comply with section 07 92 00, JOINT SEALANTS to install sealants where required by manufactures installation instructions require sealant.

E. Coordinate with roofing work for installation of items in sequence to prevent water infiltration.

1. After completion of base flashing bend down cap flashing flange and secure to blocking with screws.

2. Install expansion joint cover with 6 mm (1/4 inch) wide space at end joints and tension bars at 610 mm (24 inches) on center.

3. Install cover plates with formed aluminum flashing concealed and centered on joint. Flashing to lap cover not less than 101 mm

(4 inches).

F. Equipment Supports: Do not anchor to insulating concrete or metal deck.

Anchor only to building structure as per manufacturers recommendations.

3.2 PROTECTION

A. Protect roof accessories from damage during installation and after completion of the work from subsequent construction.

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