ADDENDUM # 1€¦ · C. ASTM D4434/D4434M - Standard Specification for Poly(Vinyl Chloride) Sheet...

PIVOT Architecture 44 West Broadway Suite 300 Eugene, OR 97401 t.541.342.7291 f.541.342.1535 pivotarchitecture.com

ADDENDUM # 1 Project: Lane Events Center – Convention Center Reroof (1902.04)

Date: February 28, 2020

To: Interested Bidders

Prepared by: Toby Barwood, AIA

This Addendum modifies the Project Manual, Specifications, and Drawings as follows:

1. General Information 1.1. Attendance at non-mandatory pre-bid walk-through.

1.1.1. See attached sign-in sheet.

2. Changes to the Project Manual 2.1. Section 07 5400

2.1.1. Replace entire section with revised version attached. Changes highlighted. a. Increase thickness of deck sheathing board for flute spannability. b. Increase insulation thickness to comply with Oregon Energy Code

prescriptive path of R-25 for roofs. c. Reduce insulation board size to 4’ x 4’.

2.2. Appendix B 2.2.1. Add test results for asbestos assessment showing none present at test

locations.

3. Changes to the Drawings 3.1. Sheet A141

3.1.1. Replace sheet with revised version attached dated 2/28/2020. a. Modify roof assembly. b. Clarify through-wall scupper connection.

4. Substitution Approvals 4.1 None.

tbarwood

TKB Stamp

Lane Events Center – Convention Center Reroof (1902.04) February 28, 2020 Addendum #1

of 2

5. Attachments 5.1. Pre-Bid attendance sheet 5.2. Specification Section 07 5400 Thermoplastic Membrane Roofing 5.3. Sheet A141 5.4. Appendix B: Asbestos Test Results

----------------End of Addendum---------------

LEC - Convention Center Reroof Construction Documents - 2/28/2020

THERMOPLASTIC MEMBRANE ROOFING07 5400 - Page 1 of 12

SECTION 07 5400THERMOPLASTIC MEMBRANE ROOFING

PART 1 GENERAL1.01 SECTION INCLUDES

A. Adhered system with thermoplastic roofing membrane.B. Insulation, flat and tapered.C. Vapor retarder.D. Deck sheathing.E. Cover boards.F. Flashings.G. Roofing cant strips, stack boots, and walkway pads.

1.02 RELATED REQUIREMENTSA. Section 06 1000 - Rough Carpentry: Wood nailers and curbs.B. Section 07 6200 - Sheet Metal Flashing and Trim: Counterflashings.

1.03 REFERENCE STANDARDSA. ASTM C1177/C1177M - Standard Specification for Glass Mat Gypsum Substrate for Use as

Sheathing; 2013.B. ASTM C1289 - Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal

Insulation Board; 2014.C. ASTM D4434/D4434M - Standard Specification for Poly(Vinyl Chloride) Sheet Roofing; 2015.D. NRCA (RM) - The NRCA Roofing Manual; 2018.E. NRCA (WM) - The NRCA Waterproofing Manual; 2005.

1.04 PERFORMANCE REQUIREMENTSA. General: Install watertight, thermoplastic single-ply membrane roofing assembly as indicated

with flashing system and compatible components that will not permit the passage of liquid waterand will withstand wind loads, thermally induced movement, and exposure to weather withoutfailure.

B. Roofing System Design1. Provide membrane roofing system that is identical to systems that have been successfully

tested by a qualified testing and inspecting agency to resist uplift pressure calculatedaccording to 2019 Oregon Structural Specialty Code and ASCE/SEI 7-16. Wind loading isbased on the following for Eugene, Oregon.a. Mean Roof Height: 40 feet at Performance Hall, 45 feet at Exhibit Hallb. Roof Slope: 1.5:12 or lessc. Building Configuration: Enclosedd. Exposure: Ce. Risk Category: IIf. Basic Wind Speed: 98 mph (OSSC 2019 Table 1609.3, category II)

2. Provide roofing system that is identical to systems that have been successfully tested byqualified testing agency to resist unfactored service wind uplift pressure calculatedaccording to the American Society of Civil Engineers (ASCE 7-16) with a factor of safety of2.0.

C. Underwriters Laboratories (UL) Listed Products: Provide materials that have been tested andlisted by UL, and bear UL label on each package, or are shipped to the project with a ULCertification of Compliance. A copy of said UL certificates shall be submitted to the Owner foreach noted shipment received at the site.

E. Cover boards.

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D. Fire Performance Characteristics: Provide roofing system with materials and components thatmeet or exceed UL Class A requirements.

1.05 ADMINISTRATIVE REQUIREMENTSA. Preinstallation Meeting: Convene one week before starting work of this section.

1. Review preparation and installation procedures and coordinating and scheduling requiredwith related work.

1.06 SUBMITTALSA. See Section 01 3000 - Administrative Requirements, for submittal procedures.B. Product Data: Provide data indicating membrane materials, flashing materials, insulation, vapor

retarder, surfacing, and fasteners.C. Shop Drawings: Submit drawings that indicate joint or termination detail conditions, conditions

of interface with other materials, setting plan for tapered insulation, and mechanical fastenerlayout.

D. Samples for Verification: Submit two samples 12 by 12 inches in size illustrating insulation androof membrane.

E. Manufacturer Certificates: Signed by roofing manufacturer certifying that roofing systemcomplies with requirements specified in “Performance Requirements” Article and herein.1. Written approval by membrane manufacturer for use and performance of membrane in

this application, including that materials supplied for project comply with requirements ofcited ASTM standards and Project Documents.

2. Submit evidence of compliance with performance requirements including relevantassembly numbers.

3. Certify that materials are free of asbestos.4. Manufacturer’s Project Acceptance Document: Submit certification that manufacturer and

installer will warrant roofing system for the specific site, design, details, and applicationindicated for this Project.

F. Manufacturer's Installation Instructions: Indicate membrane seaming precautions and perimeterconditions requiring special attention.

G. Manufacturer's Field Reports: Indicate procedures followed, ambient temperatures, humidity,wind velocity during application, and supplementary instructions given.

H. Manufacturer's Qualification Statement.I. Installer's Qualification Statement.J. Specimen Warranty: For approval.K. Warranty Documentation:

1. Submit manufacturer warranty and ensure that forms have been completed in Owner'sname and registered with manufacturer.

2. Submit installer's certification that installation complies with warranty conditions forwaterproof membrane.

1.07 QUALITY ASSURANCEA. Manufacturer Qualifications: Company specializing in manufacturing the products specified in

this section with minimum three years of documented experience.B. Installer Qualifications: Company specializing in performing the work of this section with at least

five years of documented experience.C. Source Quality Control:

1. Manufacturer’s Products: Obtain roofing materials from only one manufacturer. Providematerials that are not available from the manufacturer from sources that arerecommended and approved by the manufacturer.

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2. Materials shall be obtained only from manufacturers who will, if required, send a qualifiedtechnical representative to the project site for the purpose of advising the Contractor on theprocedures and precautions for use of the specified materials.

D. Supervision:1. Installer shall maintain a full-time supervisor/foreman for each major area of work, who is

on job site during times that roofing work is in progress, who is experienced in installingroofing systems similar to type and scope required for this Project, and is not performingactual installation work.

E. Quality Standards:1. Cited Standards and specified manufacturers’ catalogs, current at the date of bidding

documents, unless otherwise specified, are incorporated herein by reference and governthe work. If conflict is discovered between referenced Standards or catalogs and theproject specifications, request written clarification from the Owner and Architect/Engineer.Do not proceed with the work until receiving clarification.

2. Comply with recommendations of the latest edition of the following standards:a. SMACNA -”Architectural Sheet Metal Manual”b. NRCA “The NRCA Roofing Manual”c. Underwriters Laboratories (UL)d. American Standard Testing and Materials (ASTM)

F. Pre-installation Conference: Before installing roofing system, conduct conference at Project siteto comply with requirements of Section 01 3000.1. Meet with Owner, Installer, manufacturer’s technical representative, and installers whose

work interfaces with or affects roofing including installers of roof accessories and otheradjoining work, and representatives of other entities directly concerned with performanceof roofing work.

2. Review methods and procedures related to roofing installation, including manufacturer’swritten instructions.

3. Review base flashings, special roofing details, roof drainage, roof penetrations,mechanical equipment curbs, and condition of other construction that will affect roofingsystem.

4. Review requirements for inspections, testing, certifications, forecasted weather conditions,governing regulations, insurance requirements, and proposed installation procedures.

5. Examine deck substrate conditions and finishes for compliance with requirements,including flatness and attachment to structure.

6. Review loading limitations of deck during and after roofing.7. Review governing regulations and requirements for insurance, certifications, and

inspection and testing, if applicable.8. Review temporary protection requirements for roofing system during and after installation.9. Review roof observation and repair procedures after roofing installation.10. Review field constructed mock-ups.11. Record discussions of conference, including decisions and agreements (or

disagreements) reached, and furnish copy of record to each party attending. If substantialdisagreements exist at conclusion of conference, determine how disagreements will beresolved and set date for reconvening conference.

1.08 DELIVERY, STORAGE, AND HANDLINGA. Deliver materials in manufacturer's original containers, dry and undamaged, with seals and

labels intact.B. Store materials in weather protected environment, clear of ground and moisture.C. Ensure storage and staging of materials does not exceed static and dynamic load-bearing

capacities of roof decking.D. Protect foam insulation from direct exposure to sunlight.

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1.09 FIELD CONDITIONSA. Do not apply roofing membrane during conditions outside of parameters recommended by

roofing membrane manufacturer.B. Do not apply roofing membrane to damp or frozen deck surface or when precipitation is

expected or occurring.C. Do not expose materials vulnerable to water or sun damage in quantities greater than can be

weatherproofed the same day.D. Schedule applications so that no partially completed sections of roof are left exposed at end of

workday.1.10 WARRANTY

A. See Section 01 7800 - Closeout Submittals, for additional warranty requirements.B. Manufacturer’s Roofing System Warranty:

1. Written system warranty, non-prorated and without monetary limitation, signed by roofingsystem manufacturer, including:a. Repair or replace components of roofing system that do not comply with

requirements; that do not remain watertight; that fail in adhesion, cohesion, or generaldurability; or that deteriorate in manner not clearly specified by submitted roofingsystem manufacturer’s data as inherent quality of material for application indicated.

b. Manufacturer’s warranty includes roofing membrane, base flashings, roofingmembrane accessories, and other components of the roofing system as supplied bythe membrane manufacturer.

c. Failure includes roof leaks and defects that do not result in roof leaks such as blisters,partial seam voids, and wrinkles.

d. Labor and materials to perform warranty work.2. Warranty to include no failure for wind speed up to 55 mph.3. Warranty Period: Twenty years from date of completion of roofing system.

C. Roofing Installer’s Warranty1. Completed warranty form at end of Section, signed by Roofing Installer.

a. Repair or replace components of roofing system that do not comply withrequirements; that do not remain watertight; that fail in adhesion, cohesion, or generaldurability; or that deteriorate in manner not clearly specified by submitted roofingsystem manufacturer’s data as inherent quality of material for application indicated.Warranty includes defects such as blisters, partial seam voids, and wrinkles.

b. Removal and replacement of all other components of roofing system. Warrantyincludes replacing materials as necessary.

c. Labor and materials to perform warranty work.2. Warranty to include no failure for wind speed up to 55 mph.3. Warranty Period: Two years from date of completion of roofing.

PART 2 PRODUCTS2.01 MANUFACTURERS

A. Thermoplastic Polyvinyl Chloride (PVC) Membrane Roofing Materials:1. Carlisle Roofing Systems, Inc: www.carlisle-syntec.com/#sle2. GAF;: www.gaf.com/#sle.3. IB Roof Systems: www.ibroof.com/#sle.4. Johns Manville: www.jm.com/#sle.5. Sika Corporation Roofing; Sarnafil: usa.sarnafil.sika.com/#sle.6. Substitutions: See Section 01 6000 - Product Requirements.

2.02 MEMBRANE ROOFING AND ASSOCIATED MATERIALSA. Membrane Roofing Materials:

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1. PVC: Polyvinyl chloride (PVC) complying with ASTM D4434/D4434M, Type II, Grade 1,sheet contains reinforcing fibers or reinforcing fabrics.a. Thickness: 60 mil, 0.060 inch, minimum.b. Attachment: Fully adhered.

2. Sheet Width: Factory fabricated into largest sheets possible.3. Color: light gray.

B. Seaming Materials: As recommended by membrane manufacturer.C. Vapor Retarder / Air Barrier

1. Self-adhered SBS modified bitumen vapor retarder/air barrier/temporary roofingmembrane, 31 mils thick, with tri-laminated woven polyethylene facer that can acceptapproved urethane adhesives for insulation attachment.a. Sika SA 31 (Basis of Design) with primer recommended by manufacturer.b. Substitutions: See Section 01 6000 - Product Requirements.

D. Flexible Flashing Material: Same material as membrane.2.03 DECK SHEATHING

A. Deck Sheathing: Glass mat faced gypsum panels, ASTM C1177/C1177M, fire resistant type,1/2 inch thick.1. Flute-Spanability: 5 inch minimum per ASTM E661.2. Manufacturers:

a. Georgia-Pacific; DensDeck Prime: www.densdeck.com/#sle.b. USG Corporation; Securock Ultralight Glass-Mat Roof Board or Securock Ultralight

Coated Glass-Mat Roof Board: www.usg.com/#sle.c. Substitutions: See Section 01 6000 - Product Requirements.

2.04 COVER BOARDSA. Cover Boards: Glass-mat faced gypsum panels complying with ASTM C1177/C1177M.

1. Thickness: 1/4 inch, fire resistant.2. Manufacturers:

a. Georgia-Pacific; DensDeck Prime: www.densdeck.com/#sle.b. Substitutions: See Section 01 6000 - Product Requirements.

2.05 INSULATIONA. Polyisocyanurate (ISO) Board Insulation: Rigid cellular foam, complying with ASTM C1289.

1. Classifications:a. Type II:

1) Class 1 - Faced with glass fiber reinforced cellulosic felt facers on both majorsurfaces of core foam.

2) Compressive Strength: Classes 1-2-3, Grade 3 - 25 psi (172 kPa), minimum.3) Thermal Resistance: LTTR R-value of at least 5.56 per inch.

2. Board Size: 48 by 48 inch.3. Board Thickness: 2.5 inch.4. Tapered Board: Slope as indicated; minimum thickness 1/4 inch; fabricate of fewest layers

possible.5. Board Edges: Square.6. Manufacturers:

a. Dow Chemical Company: www.dowbuildingsolutions.com.b. GAF; _______: www.gaf.com/#sle.c. Versico Roofing Systems: www.versico.com/#sle.d. Firestone.e. Johns Mansvillef. Substitutions: See Section 01 6000 - Product Requirements.

A. Deck Sheathing: 1/2

Flute-Spanability: 5 inch minimum per ASTM E661.2.

COVER BOARDSA. Cover Boards: Glass-mat faced gypsum panels complying with ASTM C1177/C1177M.

1. Thickness: 1/4 inch, fire resistant.2. Manufacturers:

Georgia-Pacific; DensDeck Prime: www.densdeck.com/#sle.a.b. S b tit ti S S ti 01 6000 P d t R i tSubstitutions: See Section 01 6000 - Prroduct Requirements.ct equ e e ts

2.05

48 2.5

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2.06 ACCESSORIESA. Primers: Primers for the membrane roofing shall be as recommended and supplied by the

membrane manufacturer.B. Pre-Fabricated Penetration Flashings: Components pre-fabricated from same reinforced

thermoplastic material as roofing membrane, or as recommended by membrane sheetmanufacturer, including pipe flashing boots, corners, and T-joint covers.

C. Stack Boots: Prefabricated flexible boot and collar for pipe stacks through membrane; samematerial as membrane.

D. Cant Strips: Wood, pressure preservative treated; as specified in Section 06 1000.E. Insulation Joint Tape: Glass fiber reinforced type as recommended by insulation manufacturer,

compatible with roofing materials; 6 inches wide; self adhering.F. Fasteners: Factory-coated steel fasteners and corrosion-resistant metal plates, designed for

fastening membrane to substrate, and acceptable to membrane roofing system manufacturer.1. General

a. Fasteners shall be as approved by manufactuer for substrates encountered includinglaboratory uplift resistance in accordance with Underwriters Laboratories (UL580).Tests for uplift resistance of roof assemblies.

b. Provide all mechanical fasteners and related items such as washers and plates,galvanized after fabrication and coated with two coats of corrosion-resistant coating.

c. Fasteners for Flashing and Trim: Blind fasteners or self-drilling screws, gasketed, withhex-washer head.

d. Blind Fasteners: High-strength aluminum or stainless steel rivets suitable for metalbeing fastened.

2. Non-corrosive metal, compatible with material being fastened or anchored. Spacing asnoted on Drawings.

3. Metal to Metal: Metal fasteners, No. 3 point, 10 - 16 by 3/4 inch (minimum length) stainlesssteel or having an approved corrosion resistant coating and with an integral neoprene/steelsealing washer.

4. Rivets: Solid rivets of same material as being connected.5. Expansion Inserts: Lead or nylon.

G. Insulation Fasteners: Appropriate for purpose intended and approved by roofing manufacturer.1. Length as required for thickness of insulation material and penetration of deck substrate.

H. Membrane Faced (Coated) Metal Flashings: Manufacturer’s standard heat weld able membraneproduct fabricated of not less than 20 mils of same colored roofing membrane permanentlybonded to commercial quality steel sheet, not less than 24 gauge, that has been hot-dippedgalvanized according to ASTM A527, G90.

I. Membrane Adhesive: As recommended by membrane manufacturer.J. Sealants: As recommended by membrane manufacturer.K. Walkway Pads: Suitable for maintenance traffic, contrasting color or otherwise visually

distinctive from roof membrane.1. Composition: Roofing membrane manufacturer's standard.2. Size: As indicated.3. Surface Color: White or Gray.4. Location: As indicated on Drawings.

L. Miscellaneous Accessories: Provide pourable sealers, preformed cone and vent sheetflashings, preformed inside and outside corner sheet flashings, T-joint covers, lap sealants,termination reglets, and other accessories including but not limited to:1. Sarnasolv (Basis of design)2. Sikaflex - 1a (Basis of design)3. Sarnareglet (Basis of design)4. Multi-purpose tape (Basis of design)

2.06

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5. Aluminum tape (Basis of design)6. Elastomeric tape (Basis of design)7. Approved equal.

M. Equipment: Hot Air Welding Equipment: Self-propelled machine suitable for type of hot airwelding required and calibrated prior to beginning work of this project.1. Sanamatic (Basis of Design)2. Approved equal

PART 3 EXECUTION3.01 EXAMINATION

A. Verify that surfaces and site conditions are ready to receive work.B. Verify deck is supported and secure.C. Verify deck is clean and smooth, flat, free of depressions, waves, or projections, properly sloped

and suitable for installation of roof system.D. Verify deck surfaces are dry and free of snow or ice.E. Verify that roof openings, curbs, and penetrations through roof are solidly set, and cant strips

are in place.3.02 METAL DECK PREPARATION

A. Install deck sheathing on metal deck:1. Lay with long side at right angle to flutes; stagger end joints; provide support at ends.2. Cut sheathing cleanly and accurately at roof breaks and protrusions to provide smooth

surface.3. Tape joints.4. Mechanically fasten sheathing to roof deck, in accordance with roofing manufacturer's

instructions.3.03 INSTALLATION - GENERAL

A. Perform work in accordance with manufacturer's instructions, NRCA (RM), and NRCA (WM)applicable requirements.

B. Do not apply roofing membrane during unsuitable weather.C. Do not apply roofing membrane when ambient temperature is outside the temperature range

recommended by manufacturer.D. Do not apply roofing membrane to damp or frozen deck surface or when precipitation is

expected or occurring.E. Do not expose materials vulnerable to water or sun damage in quantities greater than can be

weatherproofed the same day.3.04 VAPOR RETARDER AND INSULATION - UNDER MEMBRANE

A. Vapor Retarder:1. Install primer as required by membrane manufacturer.2. Install self-adhering sheet membrane wrinkle free. Apply primer if required by membrane

manufacturer. Comply with temperature restrictions of membrane manufacturer forinstallation. Apply over entire roof, in shingle fashion to shed water, with end laps of notless than 6 inches staggered 24 inches between courses. Overlap side edges not lessthan 4 inches. Roll laps with roller. Cover membrane within 28 days.

3. All transitions, including but not limited to wood blocking and fall arrest stanchions, shall betreated with a 1 inch by 1 inch minimum fillet of sealant to ease transition of the membranesheets. Seal transitions air tight.

4. Vertical offsets that are 1/8 inch shall be pre-treated with an 8 inch wide strip of membranecentered over the joint. Vertical offsets greater than 1/8 inch shall be repaired to bringthem into conformance with the project specifications.

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5. Sheet installation shall be done in such a way as to avoid stretching membrane whileremoving release paper. It is recommended that section of membrane be pre-cut to nomore than 12 feet in length and allowed to fully relax prior to application.

6. Patch misaligned or inadequately lapped seams with membrane. Slit any fishmouths,overlap the flaps, and repair with a patch of membrane and roll in place.

7. At vent, fall arrest stanchions, and similar penetration locations, cut sheet around base ofpenetrations. Apply 1 inch sealant fillet at vertical transition. Install 24 inch squaremembrane target sheet centered on stanchion, tightly lapping up onto stanchion 3 inchesminimum. Install stainless steel clamp ring and seal top edge with sealant for airtightflashing installation.

8. Flashing strips used to seal edges of transition or edge sections of membrane coatedsheet metal shall be provided with 3 inch minimum laps onto primed sheet metal andmembrane sheets unless otherwise noted on Drawings.

9. Turn membrane up wall surfaces and onto wood blocking as shown on Drawings. Seal topedge of overlap with sealant.

B. Insulation:1. Only install as much insulation as can be covered in a day’s roofing operation, and do not

leave exposed to precipitation.2. Warped or bent insulation boards or boards with damaged facers shall not be used.3. Provide sizes to fit applications indicated and selected from manufacturer’s standard

thicknesses, widths, and lengths.4. If installed in two layers, install with long joints in continuous straight lines with end joints

staggered, with second layer transverse to first layer, with joints staggered at leastone-third of overall length from those of first layer.

5. Install in layers with joints of each succeeding layer staggered from joints of previous layera minimum of 6 inches in each direction.a. All layers to be adhered with adhesive.b. Apply ribbons of bead-applied adhesive at coverage rate specified by the

manufacturer to achieve the project uplift rating. Allow adhesive to rise or set upaccording to the manufacturer’s recommendations.

c. Set the boards in place, apply pressure to the boards to spread the adhesive beadsfor maximum contact. Maintain pressure on the boards until the adhesive cures.

6. Neatly cut and trim insulation to fit around penetrations and projections and fill voids withinsulation.

7. Comply with insulation manufacturer’s written instructions applicable to products andapplications included.

8. Install insulation that is undamaged, dry, and unsoiled and that has not been left exposedto ice, rain, or snow at any time.

9. Use the largest appropriate section. Use of multiple smaller sections when a single largersection could be used will not be permitted.

C. At roof drains, use factory-tapered boards to slope down to roof drains over a distance of 24inches.

3.05 COVER BOARDA. Adhered Cover Boards: Install cover boards over insulation with long joints in continuous

straight lines with end joints staggered between rows. Offset cover board joints a minimum of 6inches in each direction and also from insulation board joints. Tightly butt boards together.1. Use longest appropriate boards. Use of multiple smaller boards when a single board will fit

shall not be permitted.2. Cut and fit cover board within 1/4 inch of nailers, projections, and penetrations.3. At roof drains, trim surface of cover board where necessary so completed surface is flush

and does not restrict flow of water.4. Apply ribbons of bead-applied adhesive at coverage rate specified by the manufacturer to

achieve the project uplift rating. Allow adhesive to rise or set up according to themanufacturer’s recommendations.

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5. Set the boards in place, apply pressure to the boards to spread the adhesive beads formaximum contact. Maintain pressure on the boards until the adhesive cures.

3.06 MEMBRANE APPLICATIONA. Adhere membrane roofing over area to receive roofing and install according to membrane

roofing system manufacturer’s written instructions.B. Clean cover board surfaces of debris, and ensure material is dry and smooth with no excessive

surface imperfections that would telegraph through roofing membrane, and that there are nocontaminated or unsound surfaces. Broken, delaminated, damaged, or wet boards shall bereplaced with dry, sound material.

C. Unroll membrane to complete length and position without stretching, allow to relax for amount oftime recommended by manufacturer, inspect for damage, creases, or deficiencies, then rerollas recommended for installation.

D. Apply primer to all horizontal and vertical cover board substrates to which the membrane is tobe applied when the ambient temperature or substrate temperature is below 40 degrees F.Primer to be applied in strict accordance with the membrane manufacturer’s applicationinstructions. Do not apply primer during periods of inclement weather or when ambienttemperatures are below 25 degrees F. Temperature must be a minimum of 25 degrees F forprimer application.

E. Bonding Adhesive: Apply to substrate and underside of membrane roofing at rate required bymanufacturer and allow to partially dry before installing membrane roofing. Do not apply tosplice area of membrane roofing.

F. Carefully unroll membrane sheets into adhesive, overlapping edges as required bymanufacturer for amount of material required for lapping. Keep sheets even and continueunrolling until sheet is laid flat. Wrinkles in material are not acceptable and should be removedand replaced. Remove and clean adhesive left exposed after sheet installation. Use large,weighted roller to embed sheet into adhesive.

G. Accurately align membrane roofing and maintain uniform side and end laps of minimumdimensions required by manufacturer. Stagger end laps.

H. In addition to adhering, mechanically fasten membrane roofing securely at terminations,penetrations, and perimeter of roofing as required by membrane manufacturer for each roofingsystem.

I. Apply membrane roofing with side laps shingled with slope of roof deck where possible.J. Seams: Clean seam areas, overlap membrane roofing, and hot-air weld side and end laps of

membrane roofing and sheet flashings according to manufacturer’s written instructions toensure a watertight seam installation.1. Machine weld seams using the manufacturer’s approved automatic welding equipment.

When using this equipment, manufacturer’s instructions shall be followed and local codesfor electric supply, grounding, and over current protection observed. Dedicated circuithouse power or a dedicated portable generator is recommended. No other equipment shallbe operated simultaneously off the generator.

2. Test lap edges with probe to verify seam weld continuity. Apply lap sealant to seal cutedges of sheet membrane.

3. Verify field strength of seams a minimum of twice daily and repair seam sample areas.4. Repair tears, voids, and lapped seams in roofing that do not comply with requirements.

K. Install supplemental mechanical fastening system as required by the membrane manufacturernear roof perimeter and at transitions, peaks, valleys, and other locations according tomanufacturer’s requirements.

3.07 BASE FLASHING INSTALLATIONA. Install sheet membrane, metal flashings, and preformed flashing accessories, and adhere to

substrates according to membrane roofing system manufacturer’s written instructions.

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1. Anchor units of work securely in place providing for thermal expansion of units; concealfasteners where possible, and set units true to line and level.

2. Install work to fit substrates with laps, joints, and seams that will be permanently watertightand weatherproof.

3. Install exposed work without excessive oil canning, buckling, and tool marks, with exposededges folded back to form hems.

4. Provide for thermal expansion of exposed sheet metal work. Space movement joints atmaximum of 10 feet with no joints within 24 inches of corners or intersections.

B. Apply bonding adhesive to substrate and underside of sheet flashing at required rate and allowto partially dry. Do not apply to seam area of flashing.

C. Flash inside and outside corners with prefabricated inside and outside membrane cornercomponents.

D. Clean seam areas, overlap, and firmly roll sheet flashings into the adhesive. Hot-air weld sideand end laps to ensure a watertight seam installation.

E. Install termination bar and fasteners according to the detail drawings and manufacturer’srequirements with approved fasteners into the structural deck at the base of parapets, walls,and curbs.

F. All flashing membranes shall be consistently adhered to substrates. All interior and exteriorcorners and miters shall be cut and hot-air welded into place. No bitumen shall be in contactwith the flashing membrane.

G. Terminate and seal top of sheet flashings and mechanically anchor to substrate throughtermination bars at 8 inches on center maximum. Install elastomeric tape between terminationbar and membrane.

H. All membranes and membrane flashings that exceed 30 inches (0.75 m) in height shall receiveadditional securement.

I. Test seams by probe. Install 6 by 6 inch minimum patch to repair open/damaged seam.J. Lapped Joints in Running Metal Flashings

1. Lapping one piece over another of running flashings is not permitted.2. Joints in running metal flashings shall be formed with adjacent pieces butted together

end-to-end with a 1/4 to 3/8 inch space between the ends. The joint shall then be coveredwith a splice plate with bed of bonding adhesive between the splice plate and the flashingpieces.

3.08 FIELD QUALITY CONTROLA. See Section 01 4000 - Quality Requirements, for general requirements for field quality control

and inspection.B. Owner’s Representative will inspect roofing system at various stages of construction and at

completion.C. If indicated by inspections, test cuts may be made to evaluate observed problems with roofing

system.1. Approximate quantities of components within roofing membrane will be determined

according to ASTM D3617.2. Test specimens will be examined for adhesive voids and seam voids.

D. Final Roof Inspection: Arrange for roofing system manufacturer’s technical personnel to inspectroofing installation on completion and submit written report to the Owner and Architect/Engineerwithin five days of inspection. Notify Owner 48 hours in advance of date and time of inspection.

E. Repair or remove and replace components of roofing system where test results or inspectionsindicate they do not comply with specified requirements.

F. Additional testing and inspecting, at Contractor’s expense, will be performed to determinecompliance of replaced or additional work with specified requirements.

G. Testing responsibilities shall include the following:

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1. Seam Quality: Conduct testing of welded seams by obtaining 2 inch wide cross-sectionsamples through completed seams, not less than three times a day, with first sample atbeginning of the day’s work, and evaluated immediately to verify that roofing membranematerial will display failure from shearing prior to separation of seam. Note location ofsamples on submittals. If sample fails, examine seam further to determine reasons forfailure. The samples must be dated and saved for evaluation by membrane manufacturer’sTechnical Representative. Each test cut shall be patched by the Applicator.

2. Seam Integrity: Conduct testing of all welded seams using a blunt-ended probinginstrument, acceptable to membrane manufacturer, after seam has cooled for period oftime recommended by membrane manufacturer.

3. Hot Air Welding Machine Calibration: Conduct daily testing of equipment and ensure airtemperatures are within range recommended by manufacturer.

4. Agency shall submit written reports within five days of testing.H. Manufacturers Field Service

1. Manufacturers shall provide qualified technical representative on-site intermittently or whenrequired by Architect/Engineer during the roofing work.

2. Representative shall inspect material and installation to ensure installation is proceeding inaccordance with manufacturer’s designs, recommendations and warranty requirements.

3. Representative shall submit written reports within five days of inspection.I. Patching of sample cuts and retesting of materials failing to meet specified requirements shall

be at Contractor’s expense.3.09 CLEANING

A. See Section 01 7419 - Construction Waste Management and Disposal, for additionalrequirements.

B. Remove bituminous markings from finished surfaces.C. In areas where finished surfaces are soiled by work of this section, consult manufacturer of

surfaces for cleaning advice and comply with their documented instructions.D. Repair or replace defaced or damaged finishes caused by work of this section.

3.10 PROTECTIONA. Protect installed roofing and flashings from construction operations.B. Where traffic must continue over finished roof membrane, protect surfaces using durable

materials.END OF SECTION 07 5400

2/28/2020/ /

H

G

F

E

9 10 11

D7 D7

D5

D4

D18

D10D3

D3

D3

D3

D4

90' -

0"

60' - 0"

D20

D21

D21

D21

D21 D21

D21

D21

D21

D21

D21

D21D21D21D21

D18

D18

D18

D18

D18

D18

D18

D18

D18

NEW ROOF MAINTENANCE PATH FORMEDBY MEMBRANE MANUFACTURER'S

RECOMMENDED WALKWAY PAD SYSTEM

9A141

______

5A141

______

2A141

______

9A141

______

9A141

______

9A141

______

THERMOPLASTIC MEMBRANE ROOFING

COVER BOARD

5" ROOF INSULATION

VAPOR RETARDER

DECK SHEATHING

EXISTING METAL FRAMING TO REMAIN

EXISTING PRECOATED SHEET METALFLASHING TO BE REMOVED, STORED AND

REINSTALLED.

EXISTING METAL WALL PANELS TOREMAIN

EXISTING SHEATHING TO REMAIN

EXISTING SHEATHING TO BE REMOVEDAND REPLACED WITH NEW PLYWOOD

SHEATHING, TYPICAL WHERE EXISTINGROOF MEMBRANE IS ADHERED TO

SHEATHING.

ADD-1

ROOF/OVERFLOW DRAIN. PROVIDE NEWCLAMPS AND SCREENS.

EXISTING STEEL DECKING TO REMAIN. IFVISUAL INSPECTION INDICATES RUSTING

OR SIMILAR DAMAGE, CONSULTARCHITECT BEFORE COVERING.


COVER BOARD

WATER CUT-OF MASTIC, TYPICAL

SEAL GAPS AROUND DRAIN BODY WITHSPRAY FOAM INSULATION.

ADD-1

EXISTING PRECOATED SHEET METALFLASHING TO BE REMOVED, STORED AND

REINSTALLED.

EXISTING METAL WALL PANELS TOREMAIN



COVER BOARD

5" ROOF INSULATION

VAPOR RETARDERDECK SHEATHING




CONTINUOUS CLEAT

HOT AIR WELD PER MANUFACTURER'SREQUIREMENTS

TERMINATE MEMBRANE PERMANUFACTURER'S RECOMMENDATIONS

CUT EDGE SEALANT AS REQUIRED BYMANUFACTURER

WRAP UP AND OVER TOP OF PARAPET

EXISTING STAND SEAM JOINTS BETWEENCAP FLASHING SECTIONS. CUT EXISTING

SEALANT AND UNBEND EARS TODISASSEMBLE. REINSTALL WATERTIGHT.

PROVIDE NEW SECTIONS IN FINISH TOMATCH EXISTING WHERE REQUIRED.

TYPICAL.

EXISTING SHEATHING TO BE REMOVEDAND REPLACED WITH NEW PLYWOOD

SHEATHING, TYPICAL WHERE EXISTINGROOF MEMBRANE IS ADHERED TO

SHEATHING.

ADD-1


PROVIDE CUSTOM METAL SCUPPERINLET, COATED WITH PVC. FASTEN

THROUGH FACE TO FRAMING. COVERFACE WITH PVC MEMBRANE TARGET

PATCH AND WELD PATCH TO FACE OFCOATED METAL INLET.


EXISTING GALVANIZED STEEL PIPETHROUGH WALL SCUPPER / LEADER

ROOF ASSEMBLY



WATER CUT-OF MASTIC, TYPICAL

1' - 0

"RE

Q.AS<

PIPE

I.D.

8" INSERT INTO PIPE

AS REQ. FOR

CUSTOM METAL SCUPPER INLET

VERIFY SPECIFIC CONDITIONS AT EACH LOCATION AND ADJUST ACCORDINGLY

ADD-1

EXISTING ALUMINUM CURTAIN WALLSYSTEM

EXISTING STAINLESS STEEL SILL PANFLASHING TO REMAIN

EXISTING STAINLESS STEEL SPRINGLOCKCOUNTERFLASHING TO BE REMOVED,STORED AND REINSTALLED. PROVIDENEW TO MATCH WHERE EXISTING ISDAMAGED OR UNSERVICEABLE.

THERMOPLASTIC MEMBRANE ROOFINGTERMINATION BAR BY ROOFING MFR


EXISTING SHEATHING TO BE REMOVEDAND REPLACED WITH NEW PLYWOODSHEATHING, TYPICAL WHERE EXISTINGROOF MEMBRANE IS ADHERED TOSHEATHING.


ROOF MEMBRANE FULLY ADHERED ATVERTICAL SURFACES. TERMINATE

MEMBRANE PER MFR. REQUIREMENTS.



REMOVE (E) EQUIPMENT OR FLASHING AS REQUIRED. LAP NEW ROOF MEMBRANE

UP OVER CURB. ATTACH MEMBRANE PER MEMBRANE MANUFACTURER'S

RECOMMENDATION

ROOF ASSEMBLY

T.O

. MEM

BRA N

E, M

IN.

7 1/

4"

COUNTERFLASHING, SPRINGLOCK W/STRAIGHT LEG


EXISTING MECHANICAL CURB. RAISE WITHBLOCKING OF SAME MATERIAL AS CURB

(SHEET MTL. OR WOOD) AS REQUIREDFOR PROPER ROOFING TERMINATION.

CONTINUE AIR BARRIER

ADD-1

COVER BOARD

5" ROOF INSULATION

VAPOR RETARDERDECK SHEATHING

EXISTING SHEATHING TO REMAIN



CUT EDGE SEALANT AS REQUIRED BYMANUFACTURER

EXISTING METAL WALL PANELS TO REMAINEXISTING PRE-COATED SPRINGLOCK

COUNTERFLASHING TO BE REMOVED,STORED AND REINSTALLED. PROVIDE

NEW TO MATCH WHERE EXISTING ISDAMAGED OR UNSERVICEABLE. TYPICAL.

8" M

IN.

ADD-1

WOOD NAILER

STEEL MECHANICAL SUPPORT LEG.

1/4" X 2-1/2" STAINLESS STEEL LAG SCREWTHERMOPLASTIC MEMBRANE ROOFING

THERMOPLASTIC MEMBRANE ROOFINGROOF ASSEMBLY

REPLACE (E) WOOD NAILERS WITH NEW WOOD NAILERS

VAPOR RETARDER

COUNTERSUNK ANCHORS

ADD-1



DECK SHEATHING

VAPOR RETARDER5" ROOF INSULATION

COVER BOARDTHERMOPLASTIC MEMBRANE ROOFING

ADD-1

REVISIONS:

PRIN

TED

ON

:20

20 P

IVO

T AR

CH

ITEC

TUR

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OM

FIL

E:C

SCAL

E O

F 11

x 1

7 SH

EETS

IS H

ALF

OF

SCAL

E IN

DIC

ATED

ISSUE DATE:

SHEET TITLE:

PRO

JEC

T #:

2/27

/202

0 12

:23:

50 P

MS:

\201

9\19

02.0

4-LC

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rgro

unds

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f\Dra

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902-

06_L

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19.rv

t

A141

01.31.2020

ENLARGEDROOF PLAN,DETAILS

LAN

E EV

ENTS

CEN

TER

CO

NST

RU

CTI

ON

DO

CU

MEN

TS

CO

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NTI

ON

CEN

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796

W. 1

3th

AVEN

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EU

GEN

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7402

1902

.06

KEYNOTES

D3 EXISTING ROOF DRAIN AND/OR OVERFLOW DRAIN TO BEREUSED WITHIN NEW TAPERED INSULATION SUMP.INSPECT DRAIN BODY. IF BODY IS SERVICEABLE, REUSE.PROVIDE NEW CLAMPING RING, BOLTS AND STRAINERBASKET, TYPICAL. IF BODY IS NOT SERVICEABLE NOTIFYARCHITECT AND REPLACE WITH SAME AS A CHANGE TOTHE CONTRACT VALUE.

D4 EXISTING MECHANICAL EQUIPMENT SUPPORT TO BEREMOVED AND REINSTALLED AFTER NEW ROOF SYSTEM ISINSTALLED. TYPICAL.

D5 EXISTING MECHANICAL DUCTWORK OVERHEAD TOREMAIN. SUPPORT AS NECESSARY DURING REROOFINGOPERATIONS

D7 EXISTING ROOF ACCESS LADDER TO REMAIND10 EXISTING FRAMED CANT TO REMAIND18 EXISTING ROOF PENETRATION (PIPE, CONDUIT, ETC.) TO

REMAIN. REMOVE AND REPLACE BOOT FLASHING PERROOF SYSTEM MANUFACTURER'S STANDARD DETAILS,TYPICAL.

D20 EXISTING ROOF WALKWAY PADS TO BE REMOVEDD21 EXISTING WOOD SLEEPER COVERED WITH ROOFING AND

CAP FLASHING (EQUIPMENT AND / OR DUCTWORK ABOVESHOWN DASHED. REPLACE WITH NEW.

1/8" = 1'-0"1 ENLARGED ROOF PLAN - KITCHEN AREA

1 1/2" = 1'-0"7 PARAPET CAP FLASHING

1 1/2" = 1'-0"3 ROOF DRAIN

1 1/2" = 1'-0"4 PARAPET AT RAKE

1 1/2" = 1'-0"6 THROUGH WALL SCUPPER

1 1/2" = 1'-0"8 SIDE WALL UNDER GLAZING1 1/2" = 1'-0"5 MECHANICAL CURB

1 1/2" = 1'-0"9 SIDE WALL FLASHING

N

1 1/2" = 1'-0"2 MECHANICAL SUPPORT

1 1/2" = 1'-0"10 TYPICAL ROOF ASSEMBLY

# DESCRP. DATE

ADD-1 2/28/2019

Appendix B Roof System Asbestos Survey Test Results

Asbestos Testing

Testing of the convention center roof occurred Monday, 2/24/2020 by ATEZ Inc. The final report was not available at the time of writing, but representatives from ATEZ relayed that test results showed “zero asbestos in or on the roof”. The final report will be made available when complete.

ADDENDUM # 1€¦ · C. ASTM D4434/D4434M - Standard Specification for Poly(Vinyl Chloride) Sheet...

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