A.07.24_16-B-0002_Amendment_0001.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

Project Title: Cougar Pow erhouse Roof Replacement

This Amendment is issued to revise various portions of the technical specifications and draw ings as a result of responses provided to bidder inquiries.

1. Section 07 22 00.00 28, Paragraph 3.5.2 of the technical specification has been revised.

2. Sheets A-501 and A-502 have been revised.

All other terms and conditions remain unchanged.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 2

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 15-Apr-2016

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W9127N-16-B-0002

X 9B. DATED (SEE ITEM 11)

23-Mar-2016

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

15-Apr-2016

CODE

US ARMY CORPS OF ENGINEERS

333 SW FIRST AVE

PORTLAND OR 97204-3495

W9127N 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W9127N-16-B-0002

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00010 - SOLICITATION CONTRACT FORM

The Issued By organization below has been added:

US ARMY CORPS OF ENGINEERS

333 SW FIRST AVE

PORTLAND OR 97204-3495

(End of Summary of Changes)

Cougar Dam Powerhouse Roof Replacement

SECTION TABLE OF CONTENTS

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

SECTION 07 22 00.00 28

ROOF INSULATION

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 MANUFACTURER'S CERTIFICATE

1.4 QUALITY ASSURANCE

1.4.1 Flame and Smoke Resistance

1.4.2 Wind Uplift Resistance

1.5 DELIVERY, STORAGE, AND HANDLING

1.5.1 Delivery

1.5.2 Storage and Handling

1.5.3 Environmental Conditions

1.6 PROTECTION OF PROPERTY

1.6.1 Special Protection

1.6.2 Plan and Methodologies for Protecting Generators from Metal

Shavings

PART 2 PRODUCTS

2.1 ROOF INSULATION

2.1.1 General Roof Insulation

2.1.2 Tapered Roof Insulation

2.1.3 Recovered Materials

2.1.4 Roof Insulation Thickness and Size

2.2 GYPSUM SHEATHING

2.3 VAPOR BARRIER

2.4 INSULATION FASTENERS

2.5 INSULATION ADHESIVE

2.6 EXTERIOR FIRE RETARDANT TREATED WOOD

2.6.1 Wood Screws

2.6.2 Self-Drilling Screws (for attaching wood members to steel decking or other steel components)

2.6.3 Adhesive Anchors (for attaching the wood plate to the top of the existing concrete parapet wall)

PART 3 EXECUTION

3.1 EXAMINATION AND PREPARATION

3.2 INSTALLATION OF WOOD CURBS AND PERIMETER FASTENING

3.3 INSTALLATION OF BASE LAYER OF GYPSUM SHEATHING

3.3.1 Protection Measures

3.3.2 Fastener Pull Out Test

3.3.3 Installation

3.4 INSTALLATION OF VAPOR BARRIER

3.5 INSTALLATION OF ROOF INSULATION

3.5.1 Required Conditions for Adhesion of Insulation and Gypsum

SECTION 07 22 00.00 28 Page 1

Sheathing

3.5.2 General Insulation

3.5.3 Tapered Roof Insulation

3.6 INSTALLATION OF THE TOP LAYER OF GYPSUM SHEATHING

3.7 PROTECTION

3.7.1 Protection of Applied Insulation

3.7.2 Damaged Work and Materials

3.8 INSPECTION

-- End of Section Table of Contents --

SECTION 07 22 00.00 28 Page 2

SECTION 07 22 00.00 28

ROOF INSULATION

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN FOREST & PAPER ASSOCIATION (AF&PA)

AF&PA T10 (2001) Wood Frame Construction Manual for One- and Two-Family Dwellings

AF&PA T101 (2005) National Design Specification (NDS) for Wood Construction

AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE)

ASCE 7-10 WIND LOADS (2010) Guide to the Wind Load Provisions of ASCE 7-10

ASTM INTERNATIONAL (ASTM)

ASTM C 209 (1998) Test Methods for Cellulosic Fiber Insulating Board

ASTM C 1177/C 1177M (2006) Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing

ASTM C 1289 (2007) Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board

ASTM D 143 (2014) Standard Test Methods for Small Clear Specimens of Timber

ASTM D 1622 (2003) Apparent Density of Rigid Cellular Plastics

ASTM D 2126 (2004) Response of Rigid Cellular Plastics to Thermal and Humid Aging

ASTM D1876 (2008) Standard Test Method for Peel Resistance of Adhesives (T-Peel Test)

ASTM D1970/D1970M (2015) Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection

ASTM D2898 (2010) Accelerated Weathering of Fire-Retardant-Treated Wood for Fire Testing

SECTION 07 22 00.00 28 Page 3

ASTM D5147/D5147M (2014) Standard Test Methods for Sampling and Testing Modified Bituminous Sheet Material

ASTM D5602/D5602M (2011) Standard Test Method for Static Puncture Resistance of Roofing Membrane Specimens

ASTM D903 (1998; R 2010) Peel or Stripping Strength of Adhesive Bonds

ASTM E 96 (2005) Standard Test Methods for Water Vapor Transmission of Materials

ASTM E84 (2014) Standard Test Method for Surface Burning Characteristics of Building Materials

ASTM F593 (2013a) Stainless Steel Bolts, Hex Cap Screws, and Studs

FM GLOBAL (FM)

FM P7825 Factory Mutual Research Approval Guide

FM P9513 (2002) Specialist Data Book Set for Roofing Contractors; contains 1-22 (2001), 1-28 (2002), 1-29 (2002), 1-28R/1-29R (1998), 1-30 (2000), 1-31 (2000), 1-32 (2000), 1-33 (2000), 1-34 (2001), 1-49 (2000), 1-52 (2000), 1-54 (2001)

INTERNATIONAL CODE COUNCIL (ICC)

ICC IBC (2012) International Building Code

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2014) Safety and Health Requirements Manual

UNDERWRITERS LABORATORIES (UL)

UL Bld Mat Dir (2007) Building Materials Directory

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. The following must be submitted in accordance with SECTION 01 33 00 SUBMITTAL

PROCEDURES:

SD-01 Preconstruction Submittals

Plan and Methodologies for Protecting Generators from Metal Shavings

SD-03 Product Data

SECTION 07 22 00.00 28 Page 4

General Roof Insulation; G

Tapered Roof Insulation; G

Gypsum Sheathing; G

Vapor Barrier; G

Insulation Fasteners; G

Insulation Adhesive; G

Exterior Fire Retardant Treated Wood; G

Wood Screws; G

Self-Drilling Screws; G

Adhesive Anchors; G

SD-04 Samples

General Roof Insulation; G

Vapor Barrier; G

Insulation Fasteners; G

SD-05 Design Data

Wind Uplift Calculations; G

SD-06 Test Reports

Flame Spread and Smoke Developed Ratings; G

Wind Uplift Resistance; G

Results Of Fastener Pull Out Tests

SD-07 Certificates

Installer Qualifications; G

SD-08 Manufacturer's Instructions

General Roof Insulation; G

Tapered Roof Insulation; G

Gypsum Sheathing; G

Vapor Barrier; G

Insulation Fasteners; G

Insulation Adhesive; G

SECTION 07 22 00.00 28 Page 5

1.3 MANUFACTURER'S CERTIFICATE

Submit certificate from the insulation manufacturer attesting that the installer has the proper qualifications for installing tapered roof insulation systems.

Certificate attesting that the polyisocyanurate insulation contains recovered material and showing estimated percent of recovered material. Certificates of compliance for felt materials.

1.4 QUALITY ASSURANCE

1.4.1 Flame and Smoke Resistance

Roof insulation must have a flame spread rating not greater than 25 and a smoke developed rating not greater than 250, exclusive of covering, when tested in accordance with ASTM E84. Insulation bearing the UL label and listed in the UL Bld Mat Dir as meeting the flame spread and smoke developed ratings will be accepted in lieu of copies of test reports.

Compliance with flame spread and smoke developed ratings shall not be required when insulation has been tested as part of a roof construction assembly of the type used for this project and the construction is listed as fire-classified in the UL Bld Mat Dir or listed as Class I roof deck construction in the FM P7825. Insulation tested as part of a roof construction assembly must bear UL or FM labels attesting to the ratings specified herein.

1.4.2 Wind Uplift Resistance

The screw and plate washer attachment for the base layer of gypsum roof sheathing and the adhesive attachment system for the polyisocyanurate insulation (general and tapered) and top layer of gypsum roof sheathing must be rated and installed to resist wind loads calculated in accordance with ASCE 7-10 WIND LOADS and validated by uplift resistance testing in accordance with Factory Mutual (FM) test procedures. Submit licensed engineer's wind uplift calculations and substantiating data to validate any non-rated roof system. Base wind uplift measurements on a peak wind gust speed of 100 mph in accordance with ASCE 7-10 WIND LOADS and/or other applicable building code requirements. Provide one of the following:

a. The actual Factory Mutual test report for the submitted system showing compliance with the specified wind uplift criteria.

b. Copies from FM P7825 may be provided in lieu of an actual FM test report, provided this data clearly lists the roof membrane manufacturer, testing and compliance based on the peak wind gust, and the required application methodology to meet the specified wind uplift criteria.

1.5 DELIVERY, STORAGE, AND HANDLING

1.5.1 Delivery

a. Deliver materials to site in manufacturer's unopened and undamaged standard commercial containers bearing the following legible information:

(1) Name of manufacturer;

SECTION 07 22 00.00 28 Page 6

(2) Brand designation;

(3) Specification number, type, and class, as applicable, where materials are covered by a referenced specification.

b. Deliver materials in sufficient quantity to allow continuity of the work.

1.5.2 Storage and Handling

Store and handle materials in a manner to protect from damage, exposure to open flame or other ignition sources, and from wetting, condensation or moisture absorption. Store all materials in an enclosed building or trailer that provides a dry, adequately ventilated environment.

Polyisocyanurate insulation must be supplied in bundles wrapped with protective plastic. At the job site, the plastic wrapping must be removed from the bundles to prevent moisture condensation on the insulation.

Insulation must then be stored in the building or trailer on pallets or other dunnage elevated at least 4-inches above the ground. Where inside storage is not possible, unwrapped insulation bundles may be covered with a tarpaulin or other suitable "breathable" protection cover. Replace damaged material with new material.

1.5.3 Environmental Conditions

Do not install roof insulation during inclement weather or when air temperature is below 40 degrees F and interior humidity is 45 percent or greater, or when there is visible ice, frost, or moisture on the roof deck.

1.6 PROTECTION OF PROPERTY

1.6.1 Special Protection

Provide special protection approved by the insulation manufacturer, or avoid heavy traffic on completed work when ambient temperature is above 80 degrees F.

1.6.2 Plan and Methodologies for Protecting Generators from Metal Shavings

The generator units and other equipment located on the floor of the powerhouse must be protected from metal shavings falling from the metal roof decking during the installation of gypsum sheathing. Temporary protection means may consist of scaffolding covered with sheets of plywood or canvas tarps or other methodology chosen by the Contractor. All temporary protection means must be safely erected in compliance with EM 385-1-1. The timing and configuration of temporary protection means must also be coordinated with other ongoing contracted work taking place within the powerhouse. See specification SECTION 01 11 13.00 25 for separate contract coordination requirements. Submit for approval a plan detailing the materials and methodologies proposed for use to protect the generators and other equipment. Include written descriptions of plans to coordinate with other ongoing contracts inside the Powerhouse.

SECTION 07 22 00.00 28 Page 7

PART 2 PRODUCTS

2.1 ROOF INSULATION

2.1.1 General Roof Insulation

The general roof insulation must be "flat" stock polyisocyanurate board complying with ASTM C 1289 Type II, fibrous felt or glass mat membrane both sides. General insulation must consist of two layers of equal thickness as required to meet a minimum overall thermally-aged insulation value of R-26. Insulation board size must be as required by the insulation manufacturer to meet the specified wind uplift criteria. General roof insulation must meet or exceed the following properties:

Physical Property Test Method Value

Density, Overall ASTM D 1622 2.0 pcf (Nominal)

Compressive Strength ASTM D 1622 20 psi

Flame Spread (Core) ASTM E84 25 or less

Smoke Development (Core) ASTM E84 < 250

Water Vapor Transmission ASTM E 96 < 1 perm

Water Absorption ASTM C 209 < 1% vol.

Dimensional Stability ASTM D 2126 < 2% Linear 7 days, 158 Degrees F, Change 98% rh

2.1.2 Tapered Roof Insulation

Tapered insulation must be polyisocyanurate board meeting or exceeding the physical properties specified above for the general roof insulation.

Locations and slopes of tapered insulation must be as shown on the drawings. Provide filler insulation as required to build the tapered insulation scheme. Filler insulation must also meet the physical properties specified above for the general roof insulation. Each tapered and filler insulation board must be bonded to glass fiber or organic mat facers on both sides. Tapered insulation boards must not be less than 1/2-inch thick at their thinnest section.

2.1.3 Recovered Materials

Polyisocyanurate insulation must consist of a minimum 9 percent recovered material.

2.1.4 Roof Insulation Thickness and Size

Provide layers of general insulation as indicated on the drawings. The total thickness of general insulation required to meet a minimum overall thermally-aged insulation value of R-26. General insulation must be installed in two layers per the requirements specified herein. The size of insulation boards supplied must be as required to meet the specified wind uplift criteria.

SECTION 07 22 00.00 28 Page 8

2.2 GYPSUM SHEATHING

Gypsum sheathing must be installed over the existing steel roof decking as the base layer of the roofing insulation assembly and it must also be installed over the top of the general (flat stock) and tapered polyisocyanurate insulation as a coverboard. Gypsum sheathing must be faced with a fiberglass mat reinforced non-asphaltic coating and it must be Class A, non-combustible, 1/2-inch thick, with a minimum compressive strength of 500 psi. Sheathing must be supplied in 4 feet by 4 feet board sizes as required to meet wind uplift requirements for mechanical fastening of the base layer and subsequent glue adhesion of all insulation and gypsum sheathing layers used above the base layer. Sheathing must comply with ASTM C 1177/C 1177M and must have zero Flame Spread and zero Smoke Developed when tested in accordance with ASTM E84.

2.3 VAPOR BARRIER

The vapor barrier must be an SBS modified bitumen laminated to a woven, high density polyethylene top surface. The vapor barrier must be self-adhering and must meet uplift strength requirements based on the specified peak wind gust. It must also be bond strength-approved for glue application of polyisocyanurate roof insulation above the vapor barrier.

The vapor barrier must meet or exceed the following performance characteristics:

Physical Property Test Method Value

Thickness ASTM D5147/D5147M 30 mils

Tensile Strength ASTM D5147/D5147M 64 lbf/in, MD 88 lbf/in,XMD

Ultimate Elongation ASTM D5147/D5147M 52%, MD Bitumen Portion 24%, XMD at 73 degrees F

Low Temperature Flexibility ASTM D5147/D5147M -31 degrees F (Cold Bending)

Static Puncture ASTM D5602/D5602M 90 lbf

Lap Adhesion ASTM D1876 6 lbf/in

Water Absorption ASTM D5147/D5147M <0.1%

Peel Resistance ASTM D903 8 lbf/in

Water Vapor Permeance ASTM E 96 0.017 perms Max, Procedure B

Air Permeability ASTM D1970/D1970M 0.00114 ft/min x ft

2.4 INSULATION FASTENERS

Fasteners for attaching the base layer of gypsum sheathing and for providing additional insulation system anchorage as required to meet the specified wind uplift criteria must be case hardened steel deck screws conforming to AISI standards for carbon steel. Fasteners must be coated

SECTION 07 22 00.00 28 Page 9 for corrosion protection with an electro-deposition epoxy base coat and acrylic top coat or a fluoropolymer coating. Screws must have a diameter as recommended by the insulation manufacturer for meeting the specified wind uplift requirements, but must not be less than a No. 12 diameter. Length of fasteners must be as required to attach the base layer of gypsum sheathing (or additional layers of insulation as required to meet the wind uplift criteria) and must penetrate the steel roof decking a minimum of 1 inch. Screws must be flush-driven through round or hexagonal steel washers. Steel washers must be zinc-coated, round not less than 1 3/8 inch diameter or hexagonal not less than 20 gage.

2.5 INSULATION ADHESIVE

Insulation adhesive must be a one or two component air-cured polyurethane adhesive dispensed from portable disposable pre-pressurized containers requiring no external power source. The adhesive must be compatible for use with both polyisocyanurate insulation boards and gypsum sheathing. The adhesive must meet the requirements for the required wind uplift resistance test for the adhesion of sheathing and insulation. In addition, the adhesive must maintain an Underwriters Laboratories (UL) Class A roof system fire rating.

2.6 EXTERIOR FIRE RETARDANT TREATED WOOD

Dimensional framing lumber used to build the contraction joint curb and to provide perimeter anchorage for the roofing system must be a pressure treated fire retardant wood suitable for exterior exposure and as a fully concealed component to a roofing assembly. Fire retardant treatment must ensure a flame spread rating of less than 25 and a smoke development rating of 450 or less when tested in accordance with ASTM E84. Preservative treatment for exterior weather resistance must pass the "800-inch rain test" as prescribed by ASTM D2898Species of wood for exterior fire retardant treated wood must be Douglas Fir/Larch No. 2 or better. Lumber must comply with the testing procedures in ASTM D 143 for strength properties.

2.6.1 Wood Screws

Wood screws for attaching wood members together must be minimum No. 12 countersunk stainless steel with a Phillips head or Torx head design. Wood screws must be of a length to achieve a minimum 1 inch of embedment into the wood member they fasten into.

2.6.2 Self-Drilling Screws (for attaching wood members to steel decking or other steel components)

Self-drilling screws must be 1/4-inch diameter case-hardened ferrous steel of lengths as required to penetrate 1 inch through the steel decking.

Screws must be hex head design with a self-drilling point design suitable for penetrating into the existing steel decking. Self-drilling screws must be coated for corrosion protection with an electro-deposition epoxy base coat and a baked-on acrylic or fluoropolymer top coat.

2.6.3 Adhesive Anchors (for attaching the wood plate to the top of the existing concrete parapet wall)

Provide two-component adhesive anchors that utilize a self-contained vinylester adhesive capsule and a threaded stainless steel. The threaded stainless steel rod must comply with ASTM F593 and it must be 3/8-inch in

SECTION 07 22 00.00 28 Page 10 diameter of a length suitable for attaining a minimum 4-1/2 inch embedment.

PART 3 EXECUTION

3.1 EXAMINATION AND PREPARATION

Inspect and approve the surfaces immediately before starting installation.

Surfaces must be clean, smooth, and dry. Steel deck surfaces receiving the roofing system must be free of surface rust, rough edges, burrs, and projections. Rust must be cleaned from the surface of existing steel roof deck and the cleaned area must be painted with a primer as indicated on the drawings. Areas of steel decking that are structurally compromised, e.g., holes or deep pitting, must be brought to the attention of the COR.

Repairs to structurally compromised decking will be paid for by change order.

3.2 INSTALLATION OF WOOD CURBS AND PERIMETER FASTENING

Lumber installation must conform to AF&PA T10 unless otherwise indicated or specified. Select lumber sizes to minimize waste. Fit framing lumber and other rough carpentry, set accurately to the required lines and levels, and secure in place in a rigid manner. Do not splice framing members between bearing points. Provide as necessary for the proper completion of the work all framing members not indicated or specified. Spiking and nailing not indicated or specified otherwise must be in accordance with the Nailing Schedule contained in ICC IBC; perform bolting in an approved manner.

Spikes, nails, and bolts must be drawn up tight. Timber connections and fastenings must conform to AF&PA T101. Do not use shimming on wood or metal bearings.

3.3 INSTALLATION OF BASE LAYER OF GYPSUM SHEATHING

3.3.1 Protection Measures

Ensure all protection for keeping metal shavings off of generators and other equipment and features inside the Powerhouse are securely in place.

3.3.2 Fastener Pull Out Test

Before beginning the general installation, conduct a fastener pullout test on two representative pieces of gypsum sheathing board. Locate one of the test boards on a section of existing steel decking in relatively good condition. The other board must be located on a section of existing steel decking in a lesser condition such as where surface corrosion has been removed and a primer coat has been painted back over the removal area.

Test at least three fasteners per board. All fasteners must have a pullout value of at least 300 pounds. Where this criteria is not met, the COR must be notified and remedial actions to ensure passage of the test, such as increasing the size or number of fasteners, must be undertaken. Do not start the general installation until all fastener testing has been approved by the COR. The results of fastener pull out tests must be submitted as required above.

3.3.3 Installation

The number, location and spacing of fasteners per board must be as required by the manufacturer to meet wind uplift requirements for the specified peak wind gust. Use additional fasteners at roof perimeters and roof corners as required by the manufacturer. Edges of the boards running parallel with

SECTION 07 22 00.00 28 Page 11 the flutes of the decking must be supported on the top flanges of the decking. Each parallel running edge must have at least 1 inch of bearing on the top flute. Cut boards as necessary on parallel edges to ensure this minimum bearing condition is maintained. Do not cantilever board edges over the top decking flanges on parallel edges.

3.4 INSTALLATION OF VAPOR BARRIER

Prime the base layer of gypsum roof sheathing as recommended by the vapor barrier manufacturer before vapor barrier application. Install the self-adhering vapor barrier over the primed base layer after allowing the proper cure time for the primer. Ensure there are no wrinkles or unevenness. Successive sheets must overlap the previous sheet by a minimum 3 inches and sheets must be taken up vertical roof features such as the parapet walls and HVAC curbs as indicated on the drawings and as required for folding over and covering the cut (or open) edges of the roof insulation. Patch all cut corners, tears and other openings in the vapor retarder with additional self-adhering vapor barrier material to ensure a continuous and uncompromised moisture barrier.

3.5 INSTALLATION OF ROOF INSULATION

3.5.1 Required Conditions for Adhesion of Insulation and Gypsum Sheathing

Insulation and the gypsum sheathing must not be attached with the polyurethane adhesive when gluing surface temperatures or the ambient temperature of the air is below 33 degrees F or above 110 degrees F.

Additionally, the polyurethane adhesive must not be used during inclement weather, on wet surfaces or decks with standing water, or on surfaces with frost, ice or snow. All surfaces to receive the polyurethane adhesive must be free of loose gravel, dirt, asphalt, grease and other contaminants that may affect the proper cure and set of the adhesive. The adhesive manufacturer's written recommendations for gluing surface conditions must be strictly followed.

3.5.2 General Insulation

Follow installation of the vapor barrier sheets with installation of the general (filler) layers of polyisocyanurate insulation. Attach the first layer of general insulation to the vapor barrier with the polyurethane adhesive. Attach the next layer of general insulation to the first insulation layer with polyurethane adhesive. Apply the adhesive as required by the roofing system manufacturer to meet the specified wind uplift criteria and strictly follow the manufacturer's written directions for application. Install each layer of insulation so that all joints of each course are staggered with those of adjoining courses. Keep insulation 1/4 inch clear of vertical wall surfaces and mechanical equipment curbs.

Do not score, slash or otherwise cut either face of individual insulation boards in order to force conformation to geometric irregularities in the roof deck, parapets or other roof features.

3.5.3 Tapered Roof Insulation

Tapered insulation must be laid in configurations as required to meet the slopes indicated on the contract drawings. Each layer of tapered insulation required to form the drainage scheme must be secured with the specified polyurethane adhesive. The amount of adhesive used per each piece of tapered insulation and the placement pattern of adhesive on each piece of tapered insulation must be as required to meet the specified wind

SECTION 07 22 00.00 28 Page 12 uplift criteria. Removal of the tapered insulation board facing sheets by cutting, abrading or scoring in order to force conformation to the drainage scheme will not be allowed.

3.6 INSTALLATION OF THE TOP LAYER OF GYPSUM SHEATHING

Adhere the top layer of sheathing to the polyiso insulation with the specified polyurethane adhesive. The amount of adhesive used for each sheathing board and the placement pattern of adhesive on each board must be as required to meet the specified wind uplift criteria. Cut and neatly fit edges of the boards as required to conform to the slopes of the insulation cricketing scheme.

3.7 PROTECTION

3.7.1 Protection of Applied Insulation

Completely cover each day's installation of insulation with the finished roofing specified in SECTION 07 53 23.00 28, ETHYLENE-PROPYLENE-DIENE-MONOMER ROOFING, on same day. Phased construction will not be allowed. Protect open spaces between insulation and vertical walls and contraction joint curbs until permanent roofing and flashing are applied. Do not permit storing, walking, wheeling, or trucking directly on insulation or on roofed surfaces. Provide smooth, clean board or plank walkways, runways, and platforms near supports, as necessary, to distribute weight. Exposed edges of the insulation must be protected by cutoffs at the end of each work day or whenever precipitation is imminent. Cutoffs must be EPDM membrane set in a compatible mastic. Fill all profile voids in cut-offs to prevent entrapping of moisture into the area below the membrane. Cutoffs must be removed when work is resumed.

3.7.2 Damaged Work and Materials

Restore work and materials that become damaged during construction to original condition or replace with new materials.

3.8 INSPECTION

Establish and maintain an inspection procedure to assure compliance of the installed roof insulation with the Contract requirements. Any work found not to be in compliance with the Contract must be promptly removed and replaced or corrected in an approved manner at no additional cost to the Government. Quality control must include, but not be limited to, the following:

a. Observation of environmental conditions; number and skill level of insulation workers; start and end time of work.

b. Verification of certification, listing or label compliance with

FM P9513.

c. Verification of proper storage and handling of insulation and vapor retarder materials before, during, and after installation.

d. Inspection of vapor retarder application, including edge envelopes and mechanical fastening.

e. Inspection of mechanical fasteners; type, number, length, and spacing.

SECTION 07 22 00.00 28 Page 13

f. Inspection of adhesive attachment methodologies, including type of adhesive, application apparatus, spacing of adhesive beads and thoroughness of the adhesive application.

g. Coordination with other materials and roofing components.

h. Inspection of insulation joint orientation and laps between layers, joint width and bearing of edges of insulation on deck.

i. Installation of cutoffs and proper joining of work on subsequent days.

j. Continuation of complete roofing system installation to cover insulation installed same day.

-- End of Section --

SECTION 07 22 00.00 28 Page 14

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IDENTIFICATION

SHEET

D A

T E

A P

P R

D R

A W

IN

G N

U M

B E

R of Engineers

US Army Corps

P L

O T D

A T

E

54321

D

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SHEET OF

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BORDER VERSION UPDATE [08-2013]

Sheet NameSHEET NAME:g2ecdrd9 BY USERNAME:ANSI DDRAWING PLOT SIZE: DATE AND TIME PLOTTED: 4/15/2016 1:54:02 PM

D R

A W

N B

Y

C H

E C

K E

D B

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U .S

A R

M Y C

O R

P S O

F E

N G

IN

E E

R S

P O

R T

L A

N D

O R

E G

O N

P O

R T

L A

N D D

IS

T R

IC

T

PORTLAND DISTRICT

D A

N

IE

L L E F

IC

H E

R A P .E

C

P .1

A -5

X X

X .d g n

R

C H

IT

E C

T U

R A

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0 0

O F R

E P

L A

C E

M E

N T

P O

W E

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U G

A R D

M

N

D R

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V O

IR

R O

O F D

E T

A

IL

S I

A-501

EXISTING DRAIN BOWL TO REMAIN.

EXISTING DRAIN LINE TO REMAIN.

ATTACHEMENT.

SEE SPEC. FOR

SHEATHING,

NEW GYPSUM

E X

IS

T

IN

G C

O N

C R

E T

E W

A L L

AS NECESSARY TO MEET WIND UPLIFT REQUIREMENTS.

DRAINAGE. ATTACH THE NAILER TO THE METAL ROOF DECK

TAPERED INSULATION SCHEME AND ENSURE POSITIVE

OF NAILER SHALL BE AS REQ'D TO ACCOMODATE THE

WOOD NAILER TO SUPPORT THE DRAIN ASSEMBLY. HEIGHT

2 X FIRE-RETARDANT TREATED AND PRESSURE TREATED

BE ADHERED PER SPEC SECTION 07 22 00.

THAN 1/2" THICK AT ITS THINNEST EDGE, AND SHALL

HAVE A 1/2" PER FOOT SLOPE, SHALL NOT BE LESS

DRAIN TO CREATE A SUMP. INSULATION SHALL

STACK LAYERS OF TAPERED INSULATION AT THE

VAPOR RETARDER

ROOF MEMBRANE.

FULLY-ADHERED EPDM

ROOF MEMBRANE.

FULLY-ADHERED EPDM

TO REMAIN.

ACCESS LADDER

MOUNTED ROOF

EXISTING WALL-

E X

IS

T

IN

G C

O N

C R

E T

E W

A L L

EL. 1312.25

PARAPET

T.O. CONC.

EL. 1312.25

PARAPET

T.O. CONC.

WIND UPLIFT REQUIREMENTS.

TO THE METAL ROOF DECK AS NECESSARY TO MEET

POSITIVE DRAINAGE. ATTACH THE HATCH ASSEMBLY

THE TAPERED INSULATION SCHEME AND TO ENSURE

ASSEMBLY SHALL BE AS REQUIRED TO ACCOMODATE

CONFIGURATION. HEIGHT OF NEW ROOF HATCH

AS REQUIRED TO ACCOMODATE NEW ROOF HATCH

ADJUST EXISTING ROOF HATCH OPENING SUBFRAMING

ROOF MEMBRANE.

FULLY-ADHERED EPDM

AROUND THE HATCH.

POSITIVE DRAINAGE

WALL TO ENSURE

ADJACENT PARAPET

THE ROOF HATCH AND

BE SLOPED BETWEEN

ROOF SURFACE SHALL

1"

SAFETY POST.

TELESCOPINGM

IN

R -2

M

IN

R -2

K Z

A K

K Z

A K

R T

H O

R N

T O

N

EXTERIOR CONSTRUCTION ADHESIVE.

FULL SUPPORT FOR THE EPDM WALL FLASHING. INSTALL THE INFILL BLOCKING WITH

ON THE PARAPET WALL. THE P.T. INFILL BLOCKING SHALL BE CONTINUOUS TO ENSURE

USE PRESSURE TREATED WOOD TO FILL IN REGLET SLOTS AND GAPS IN NAILING STRIPS

SCUPPER SLEEVE.

LAP AND ADHERE THE EPDM DRAIN FLASHING TO THE WELDED METAL

DECK.

METAL ROOF

EXISTING GALV.

INSULATION.

TOP OF THE POLYISO

ADHERED OVER THE

GYPSUM SHEATHING

AS SHOWN.

ROOF DRAIN INSERT AND STRAINER, CLAMP EPDM MEMBRANE

SLEEVE W/3" FLANGE.

STEELSCUPPER

WELDED STAINLESS

THE DRAIN BOWL.

ISULATION AROUND

POLYURETHANE FOAM

PROVIDE SPRAY-ON

OF SEALANT.

CONTINUOUS BEAD

ROOF HATCH.

FASTENING STRIP AT

PERIMETER

REINFORCED EPDM

DECK.

METAL ROOF

EXISTING GALV.

ROOF HATCH.

FASTENING STRIP AT

PERIMETER

REINFORCED EPDM

SEAMS SHALL NOT EXCEED 10'-0".

AS REQUIRED IN SPEC SECTION 07 61 00.00 28. THE DISTANCE BETWEEN STANDING

INDICATED ON DETAIL 2 /A-502. PROVIDE STANDING SEAM JOINTS BETWEEN PIECES

22 GAUGE STAINLESS STEEL PARAPET WALL COVER, FABRICATE TO ALLOW MOVEMENT AS

SEAMS SHALL NOT EXCEED 10'-0".

AS REQUIRED IN SPEC SECTION 07 61 00.00 28. THE DISTANCE BETWEEN STANDING

INDICATED ON DETAIL 2 /A-502. PROVIDE STANDING SEAM JOINTS BETWEEN PIECES

22 GAUGE STAINLESS STEEL PARAPET WALL COVER, FABRICATE TO ALLOW MOVEMENT AS

SHOWN FOR CLARITY.

FEATURES. HATCH GUARDRAIL SYSTEM NOT

07 72 00 FOR THE HATCH SIZE, TYPE AND

ROOF ACCESS LADDER. SEE SPEC SECTION

FOR USE WITH AN EXISTING WALL-MOUNTED

INSULATED ROOF ACCESS HATCH DESIGNED

IN TWO LAYERS.

INSULATION INSTALLED

MIN. R-26 RIGID POLYISO

A -1

/1

/1

R

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IL

A-101

SCALE: 1-1/2" = 1'-0"

ROOF DRAIN AND OVERFLOW SCUPPER DETAIL

A-101

SCALE: 1-1/2" = 1'-0"

ROOF HATCH DETAIL

L

IC

IT

A T

IO

N N

O

F

IL

E N

A M

E

D E

S

IG

N E

D B

Y

D E

S C

R

IP

T

IO

N M

A R

K

D A

T E

S

IZ

E

S U

B M

IT

T E

D B

Y

P L

O T S

C A

L E

C O

N T

R A

C T N

O

IDENTIFICATION

SHEET

D A

T E

A P

P R

D R

A W

IN

G N

U M

B E

R of Engineers

US Army Corps

P L

O T D

A T

E

54321

D

C

B

A

SHEET OF

/1

/2

BORDER VERSION UPDATE [08-2013]

Sheet NameSHEET NAME:g2ecdrd9 BY USERNAME:ANSI DDRAWING PLOT SIZE: DATE AND TIME PLOTTED: 4/15/2016 1:56:40 PM

D R

A W

N B

Y

C H

E C

K E

D B

Y

.S

A R

M Y C

O R

P S O

F E

N G

IN

E E

R S

P O

R T

L A

N D

O R

E G

O N

P O

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L A

N D D

IS

T R

IC

T

PORTLAND DISTRICT

D

N

IE

L L E F

IC

H E

R A P .E

P .1

A -5

X X

X .d g n

C H

IT

E C

T U

R A

L

0 0

O F R

E P

L A

C E

M E

N T

P O

W E

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A R D

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N

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V O

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E T

A

IL

S I I

A-502

EXISTING CONTRACTION JOINT

PER SPEC SECTION 07 22 00.00 28.

UNIFORM LAYERS OF INSULATION

SHALL BE ADHERED TO

EDGE. TAPERED INSULATION

THICK ALONG ITS THINNEST

SHALL NOT BE LESS THEN 1/2"

CRICKETS. TAPERED INSULATION

PLAN FOR THE SLOPE OF

PERIMETER. SEE THE ROOF

CRICKETS AT THE ROOF

INSULATION TO FORM DRAINAGE

TAPERED POLYISO ROOF

POLYISO INSULATION.

OVER THE TOP OF THE

GYPSUM SHEATHING ADHERED

" GAP2

EXIST. STEEL ROOF DECKING

07 22 00.00 28

DECK PER SPEC SECTION

TO THE EXIST. STEEL ROOF

MECHANICALLY ATTACHED

GYPSUM SHEATHING

RETARDER

SELF-ADHERING VAPOR

EXIST. WF 24 x 76

CONTRACTION JOINT CURB ASSEMBLY:

FLASHING STRIP

REINFORCED EPDM PERIMETER

1" PER FOOT

SLOPE COVER

FORM FLASHING.

SURFACE AT PARAPET WALL TO

MEMBRANE TURNED UP VERTICAL

FULLY-ADHERED EPDM ROOF

SELF-ADHEREING VAPOR RETARDER.

EXIST. STEEL ROOF DECKING.

E X

IS

T

C O

N C

R E

T E P

A R

A P

E T

ROOF PERIMETER CURB ASSEMBLY:

POLYISO INSULATION.

OVER THE TOP OF THE

GYPSUM SHEATHING ADHERED

PER SPEC SECTION 07 22 00.00 28.

UNIFORM LAYERS OF INSULATION

SHALL BE ADHERED TO

EDGE. TAPERED INSULATION

THICK ALONG ITS THINNEST

SHALL NOT BE LESS THEN 1/2"

CRICKETS. TAPERED INSULATION

PLAN FOR THE SLOPE OF

PERIMETER. SEE THE ROOF

CRICKETS AT THE ROOF

INSULATION TO FORM DRAINAGE

TAPERED POLYISO ROOF

6"

1'-0"

DRILLED EPOXY ANCHOR SPACED AT 3'-0" O.C.

ANCHOR WOOD BLOCKING WITH 3/8" DIAMETER

JOINT LOCATION

COVER CAP AT THE EXPANSION

M

IN

R -2

V

A R

IE

S

T.O. CONC. PARAPET

EL. 1312.25

CONC. RUSTICATION

EL. 1310.25

CONC. RUSTICATION

EL. 1307.79

V A

R

IE

S M

IN

R -2

K Z

A K

K Z

A K

R T

H O

R N

T O

N

STUD CAVITY SPACE.

CUT TO FIT TIGHTLY IN EACH

6. PROVIDE POLYISO INSULATION

WOOD SCREWS.

SHEATHING WITH STAINLESS STEEL

EACH STUD WALL. ATTACH THE

OVER THE OUTSIDE FACE OF

5. 5/8" THICK GYPSUM SHEATHING

ATTACHMENT.

FLASHING AND PARAPET CAP

BETWEEN STUDS FOR ROOF

4. LOCATE 2x6 BLOCKING

SCREWS AT 16" O.C.

STEEL HEX HEAD SELF-DRILLING

LENGTH AS REQ'D. COATED

STEEL ROOF DECK WITH 1/4" X

THE PLATE TO THE EXISTING

FOR EACH STUD WALL. ATTACH

3. CONTINUOUS 2x4 BOTTOM PLATE

CURB ASSEMBLY.

SLOPE TO SHED WATER OFF THE

FABRICATED TO FORM A 1:12

WITH A STEEL SHAPE

PLATE FOR EACH STUD WALL

2. CONTINUOUS SINGLE 2x4 TOP

AT 16" O.C.

SHALL BE 2x4 STUDS SPACED

EACH SIDE OF THE JOINT. WALLS

TREATED WOOD STUD WALLS ON

TREATED AND FIRE RETARDANT

1. CONTINUOUS PRESSURE

FORM FLASHING.

CONTRACTION JOINT TO

VERTICAL SURFACE OF THE

MEMBRANE TURNED UP

FULLY-ADHERED EPDM ROOF

07 22 00.00 28.

ROOF DECK PER SPEC SECTION

ATTACHED TO THE EXISTING STEEL

GYPSUM SHEATHING MECHANICALLY

FLASHING STRIP.

REINFORCED EPDM PERIMETER

12" O.C.

STEEL PAN HEAD SCREWS SPACED AT

ATTACHED WITH #12 x 1" L STAINLESS

NEOPRENE WASHERS. CLEATS SHALL BE

AT 12" O.C. MAX WITH STAINLESS STEEL/

STAINLESS STEEL PAN HEAD SCREWS

TO THE WOOD BLOCKING WITH #12 x 1" L

ATTACH THE CAP ON THE ROOF SIDE

(SEE PROFILE NO. 5 ON SHEET A-503.)

GAUGE STAINLESS STEEL CLEAT.

THE PARAPET CAP OVER A CONT. 18

HOOK THE LOWER OUTSIDE EDGE OF

STUD CAVITY SPACE.

CUT TO FIT TIGHTLY IN EACH

4. PROVIDE POLYISO INSULATION

SCREWS AT 16" O.C.

STEEL HEX HEAD SELF-DRILLING

LENGTH AS REQUIRED COATED

STEEL ROOF DECK WITH 1/4" X

THE PLATE TO THE EXISTING

FOR EACH STUD WALL. ATTACH

3. CONTINUOUS 2x4 BOTTOM PLATE

PLATE FOR EACH STUD WALL.

2. CONTINUOUS DOUBLE 2x4 TOP

BE 2x4 STUDS SPACED AT 16" O.C.

ROOF PERIMTER. WALLS SHALL

TREATED WOOD STUD WALL AT

TREATED AND FIRE RETARDANT

1. CONTINUOUS PRESSURE

CONSTRUCTION.

SEE DETAIL 1/A-504 FOR

THE EPDM WALL FLASHING.

FLASHING TAKEN UNDER

PARAPET WALL TRANSITION

22 GA. STAINLESS STEEL

NOT EXCEED 10'-0".

REQUIRED IN SPEC SECTION 07 61 00.00 28. THE DISTANCE BETWEEN STANDING SEAMS SHALL

DETAIL 4/A-503 FOR DIMENSIONS. PROVIDE STANDING SEAM JOINTS BETWEEN PIECES AS

22 GAUGE STAINLESS STEEL PARAPET WALL COVER, FABRICATE TO ALLOW MOVEMENT. SEE

SEAMS SHALL NOT EXCEED 10'-0".

DISTANCE BETWEEN STANDING

SECTION 07 61 00.00 28. THE

PIECES AS REQUIRED IN SPEC

ING SEAM JOINTS BETWEEN

DIMENSIONS. PROVIDE STAND-

MENT. SEE DETAIL 3/A-503 FOR

FABRICATE TO ALLOW MOVE-

CONTRACTION JOINT COVER,

22 GAUGE STAINLESS STEEL

12" O.C.

HEAD SCREWS SPACED AT

1-1/2" L STAINLESS STEEL PAN

WOOD BLOCKING WITH #12 x

SHALL BE ATTACHED TO THE

LESS STEEL CLEATS. CLEATS

OVER CONT. 18 GAUGE STAIN-

FLANGES SHALL BE HOOKED

THE TOP OUTSIDE EDGE OF

SCREWS SPACED 12" O.C. MAX.

DRILLING STAINLESS STEEL

WITH #12 x 1" L PAN HEAD SELF-

RUNNER TRACKS OF THE STUDS

OF THE FLANGES TO THE TOP

DIMENSIONS. FASTEN THE TOP

SEE DETAIL 3/A-503 FOR

CONTRACTION JOINT COVER.

FLANGE PIECES FOR THE

22 GAUGE STAINLESS STEEL

SECTION 07 22 00.00 28.

LAYERS PER SPEC

ADHERE THE INSULATION

SURFACE. APPLY IN 2 LAYERS.

ACROSS THE ENTIRE ROOF

ROOF INSULATION CONTINOUS

MIN. R-26 RIGID POLYISO

R E

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A-101

SCALE: 3" = 1'-0"

TYPICAL CONTRACTION JOINT DETAIL

A-101

SCALE: 3"= 1'-0"

TYPICAL PARAPET WALL AND CAP DETAIL

3.8 INSPECTION