RFQ_19TH2026Q0071_RAJ WH5 Roof Replacement_Update_20260810_SIGNED.pdf

Embassy of the United States of America

Bangkok, Thailand

August 10, 2026

Dear Prospective Offeror:

Subject: Request for Quotes Number 19TH2026Q0071 – Warehouse #5 Roof Replacement

Enclosed is a Request for Quotes (RFQ) for WHSE#5 roof replacement at RAJ. If you would like to submit a quotation, follow the instructions in Section J of the solicitation, complete the required portions of the attached document, and submit it to the address shown on the Standard Form that follows this letter.

The U.S. government intends to award a contract/purchase order to the responsible company submitting an acceptable offer at the lowest price. We intend to award a contract/purchase order based on initial proposals, without holding discussions, although we may hold discussions with companies in the competitive range if there is a need to do so.

Quotations are due by 4:00 PM, August 20, 2026 (Bangkok Local Time). No quotations will be accepted after this time. Quotations must be in English and incomplete quotations will not be accepted.

Your quotation must be submitted electronically to Pinlaorp@state.gov. Please enter in the subject line: “Quotation Enclosed-RFQ#19TH2026Q0071 – WHSE#5 Roof Replacement at RAJ” It is important to make sure the submission is made in a specific size and format; in MS-Word 2007/2010 or MS-Excel 2007/2010 or Adobe Acrobat (pdf) file format. The file size must not exceed 30MB. If the file size exceeds 30MB, the submission must be made in separate files and attached to separate emails with less than 30MB each.

In order for a quotation to be considered, you must also complete and submit the following:

1. SF-18

2. Section A, Pricing

3. Section L Representations and Certifications

4. Additional information as required in Section J

5. Proof of SAM Registration mailto:Pinlaorp@state.gov

Offerors shall be registered in the SAM (System for Award Management) database at https://www.sam.gov prior to submittal of their offer/proposal as prescribed under FAR 4.1102.

Failure to be registered at the time of proposal submission may deem the offeror’s proposal to be considered non-responsive and no further consideration will be given. Therefore, offerors are highly encouraged to register immediately if they are interested in submitting a response to this requirement.

Sincerely, Ramon Menendez-Carreira

Contracting Officer

TABLE OF CONTENTS

SF-18

A. PRICING

B. STATEMENT OF WORK

C. PACKAGING AND MARKING

D. INSPECTION AND ACCEPTANCE

E. DELIVERIES AND PERFORMANCE

F. CONTRACT ADMINISTRATION DATA

G. SPECIAL TERMS AND CONDITIONS

H. CLAUSES

I. LIST OF ATTACHMENTS

Attachment 1: Sample Letter of Bank Guaranty

J. INSTRUCTIONS ON HOW TO SUBMIT A QUOTATION

K. EVALUATION CRITERIA

L. REPRESENTATIONS, CERTIFICATIONS AND OTHER STATEMENTS

SECTION A - PRICING

The U.S. Embassy intends to award a contract to replace the corrugated fiber cement roof tiles over a combination of steel and wood trusses on the Main Warehouse (WHSE #5) measuring approximately

14,000 square feet located at Rajdamri Compound. Details of all the required work are provided in

Section B, Scope of Work, and a drawing package.

Work is to be performed at the WHSE#5 Rajdamri Compound, located at no.33 Rajdamri Road, Lumpini, Pathumwan, Bangkok 10330.

The contract type shall be firm‐fixed price. The duration of this work shall be 60 calendar days per unit.

A. PRICE

The Contractor shall complete all work, including furnishing all labor, material, equipment, and services required under this purchase order for the following firm-fixed price and within the time specified. This price shall include all labor, materials, all insurance, overhead and profit.

Total Price (including all labor, materials, overhead and profit) (THB)

A.1 PRICING

The agreed contract price shall be a firm-fixed amount, including all labor, materials, equipment, shipping, incidentals, etc. The Design and Implementation cost will be based on a contractor's accepted cost proposal.

Description Quantity Unit Price Total Price

Site preparation 1 sum. ________ ________

Demolition work 1 sum. ________ ________

Architectural and structural work 1 sum. ________ ________

Miscellaneous work 1 sum. ________ ________

Overhead 1 sum. ________ ________

Profit 1 sum. ________ ________

DBA Insurance 1 sum ________ ________

Total Contract Price: (paid in Thai Baht)

A.2 VALUE ADDED TAX

Value Added Tax (VAT) is not applicable to this contract and shall not be included in the CLIN rates or invoices because the U.S. Embassy has a tax exemption certificate from the host government.

SECTION B - STATEMENT OF WORK

The character and scope of work are set forth in the contract. The Contractor shall furnish and install all materials required by this contract.

In case of differences between small and large-scale drawings, the latter will govern. Where a portion of the work is drawn in detail and the remainder of the work is indicated in outline, the parts drawn in detail shall apply also to all other portions of the work.

SCOPE OF WORK

The contractor shall perform the work per specified details herein. Required work in detail is in the referenced drawings. The list below of technical requirements is to be completed but should not be used as a substitute for the drawings.

RAJDAMRI COMPOUND WAREHOUSE#5 ROOF REPLACEMENT

PART ONE - GENERAL

1.01 SUMMARY:

A. U.S. Embassy Bangkok and the Bureau of Overseas Buildings Operations (OBO) have a requirement to replace the corrugated fiber cement roof tiles over a combination of steel and wood trusses on the Rajdamri Compound’s Main Warehouse (WHSE#5) of approximately 14,000 square feet.

B. The work includes, but is not limited to, the following:

1. Remove and dispose existing ACM corrugated fiber cement roof tiles and associated penetration flashings.

2. Selective repair of existing wood and steel purlins and framing.

3. Installation of new roof metal panels.

4. Installation of new sheet metal flashings at penetrations and perimeters.

1.02 SUBMITTALS:

A. Detailed project schedule showing work phasing and proposed daily progress.

B. Applicator's License Certificate: Roofing material manufacturer's agreement indicating date application was approved and expiration date.

C. Material manufacturer's product data sheets, written approval/acceptance of specified tests for project, fastener pattern layout, details, insulation, and all related materials based upon existing site conditions.

D. Shop Drawings of all specific waterproofing details.

E. Manufacturer’s warranties that are to be issued upon project completion.

1.03 SUBSTITUTIONS AND PRODUCT OPTIONS:

A. Contractor's Representation: Request for substitution constitutes a representation that

Contractor:

• Has investigated proposed product and determined that it is equal to or superior in all respects to that specified.

• Shall provide same warranties for substitution as for product specified.

• Shall coordinate installation of accepted substitution into Work and make such other changes as may be required for Work to be complete in all respects.

• Waives all claims for additional costs, under his responsibility, related to substitution which subsequently becomes apparent.

• If substitution is not approved or accepted, Contractor shall furnish specified product.

1.04 QUALITY CONTROL:

A. OBO has the right to inspect and test all services, to the extent practicable at all times and places during the work. OBO may perform full time quality assurance inspections (QAI) and tests during construction to confirm the work is installed according to the Contract Documents.

B. Maintain quality control over suppliers, manufacturers, products, services, site conditions, and workmanship to produce work of specified quality.

C. Contractor shall be approved by manufacturer to perform the work for the specified guarantee period.

D. The Contractor shall be responsible for the following construction inspections and tests:

• Roof Metal Manufacturer’s Warranty Inspection

1.05 STORAGE OF MATERIALS:

A. Proper storage of materials is the sole responsibility of Contractor. Protect all materials susceptible to moisture including, but not limited to, all roll goods, insulation, cant strip, wood, and plywood in dry, above ground, watertight storage. Keep all labels intact and legible, clearly showing the product, manufacturer, and other pertinent information.

B. Store materials on site. Cover and protect materials subject to damage by weather, including during transit. Stored materials shall be available for inspection.

C. Store flammable and volatile liquids in sealed containers located a minimum of 20 feet from existing buildings.

D. Liquid products shall be delivered sealed, in original containers. Store roll goods in an upright position.

E. Distribute material, debris, and equipment over the roof deck to avoid damage to the structural deck. Place materials and equipment to be stored on the roof as nearly direct over structural members as can be determined. Secure equipment, material, and debris on the roof to prevent movement by wind or other elements.

1.06 TEMPORARY FACILITIES:

A. Temporary Water:

• Make arrangements with Embassy for water required for construction. Embassy will pay for cost of water.

• Do not disrupt existing water service to the building.

• Provide hoses for conveyance.

B. Temporary Electrical

• Make arrangements with Embassy for temporary electrical service. Embassy will pay energy charges for temporary power and lighting.

• Notify Embassy a minimum of two days prior to each required interruption of mechanical or electrical services in building. These interruptions shall be only at such times and for lengths of time as approved by Embassy. At no time shall interruption occur without prior approval of Embassy.

• Provide all necessary temporary wiring (in conduit if requested by Embassy), extensions, and temporary lighting devices.

C. Temporary Ladders, Chutes, Scaffolds, Hoists and Cranes:

• Furnish and maintain temporary ramps, scaffolds, hoists, or chutes as required for proper execution of Work.

• Provide overhead protection at all building entrances.

• Restrict debris removal to Embassy -approved area of building site.

• Restrict location of construction cranes to areas as approved by Owner.

• Such apparatus, equipment, and construction shall meet requirements of applicable federal, state, and local safety and labor laws.

1.07 PROJECT PROCEDURES:

A. Embassy will occupy premises during entire period of construction for the conduct of normal, daily operations. Cooperate with Embassy's Representative in all construction operations to minimize conflict and facilitate Embassy usage.

B. Contractor shall conduct his operations so as to ensure minimal inconvenience to Embassy's operations.

C. Contractor shall take precautions to avoid excessive noise or vibration that would disturb

Embassy's operations. When directed by Embassy, Contractor shall perform certain operations at designated time of day or night in order to minimize disturbance to Embassy's operations.

D. Contractor shall take all necessary precautions to assure a watertight condition in the operation portion of the building during construction.

1.08 PROJECT SECURITY:

A. Personnel Clearances: Labor Background checks will require a minimum of 21 days for clearance.

B. Vehicle Clearances: Submit authorization requests, to include dates, vehicle type, license number, and driver name, for each motorized vehicular implement used on-site.

C. Access to Site: Contractor shall have limited access to or be admitted into the compound outside the areas designated for the project except with permission by the Embassy.

D. Access to Work Area: Workers shall be escorted from SCAC to the work area. Vehicles shall be parked at designated parking.

E. Procurement/Storage: Materials shall be procured by local means and stored on-site. All materials may be inspected prior to use on the project.

PART TWO - PRODUCTS

Not Used.

PART THREE - EXECUTION

END OF SECTION

SECTION 01535 – ROOF CONSTRUCTION SAFETY

1.01 SUMMARY

A. The Contractor is responsible and shall continue management and implementation of a safety and health program throughout construction.

B. The Contracting Officer and the Post Occupational Safety and Health Officer

(POSHO) reserve the right to suspend work when and where Contractor's safety and health program is considered to be operating in an inadequate or non-complying manner.

A. Governing regulations: Latest edition of U.S. Army Corps of Engineers (COE)

Safety and Health Requirements Manual, EM 385-1-1

A. Construction Accident Prevention Plan (CAPP) is a job site specific safety and health policy and program management document. Submit a CAPP to ensure safety of all persons at the site in event of an emergency.

B. Management Commitment: Provide introductory policy statement signed by senior officers of design/build firm stating that implementation and management of the CAPP has full cooperation and support of management.

C. The CAPP shall include the following:

1. Statement of safety and health policy.

2. Administrative responsibilities for implementing the plan.

3. Identification of personnel responsible for accident prevention.

4. Plans for hazard communication, and continued safety and health training.

5. Provisions for inspections of work sites, materials, and equipment.

6. Emergency response capabilities to minimize consequences of accidents.

7. Public safety requirements.

A. Safety and Health Program Manager:

1. Appoint a manager whose duties shall include effective implementation, coordination, and enforcement of CAPP.

2. The manager shall be qualified to anticipate, identify, evaluate, and implement corrective action in relation to potential safety and health hazards and dangerous exposures for accident prevention.

3. The manager shall meet with the POSHO and Owner’s representative to discuss site specific safety and health issues.

B. Inspections:

1. Provide for frequent safety, health, and housekeeping inspections conducted by the Safety and Health Program Manager.

2. POSHO or Quality Assurance Inspectors, as part of their QA responsibilities, shall conduct and document daily safety, health, and housekeeping inspections.

C. Toolbox Meetings: Hold safety meetings once each week. Require attendance by

1.02 REGULATIONS AND STANDARDS

1.03 SUBMITTALS

1.04 QUALITY ASSURANCE

all laborers and supervisors; include those of separate contractors. Contractor shall consider the following checklist:

1. Who is trained in CPR

2. Level of local hospital services

3. Do local doctors speak English

4. Type of emergency vehicles and distances

5. Are cell phones or radios available

6. Level of embassy doctor or nurse services

7. Family contact names and telephone numbers for all crew

2.01 TOOLS, EQUIPMENT, AND MACHINERY

A. Quality: Hand tools, power tools, equipment, machinery, materials, and personal protective apparatus shall be of manufacture listed by U.S. or internationally recognized testing laboratory for specific application for which they are to be used. They shall be quality products recognized for professional construction use, applications, and work practices.

B. Scaffolding: Shall be a standard tubular frame and clamp system manufactured and tested according to international standards. The Scaffold system shall include the scaffold manufacturers integrated access stairway sections, handrails, toe boards and walking platforms.

C Safe Clearance Procedure: Prior to initial use, and periodically thereafter at times of continued use, provide inspections of construction tools, equipment, and machinery. Do not permit continued use of tools, equipment, and machinery that are not in good condition.

D. Fall Protection: On unprotected sides of the building edge provide workers with warning lines, guardrail, safety net or personal fall arrest systems or a combination of safety monitoring systems.

C. Hazardous work shall be brought to the attention of the QAI and POSHO prior to commencing the work.

1. Hot Work: Includes all work that results in open flame such as welding, cutting, brazing, and burning. The Contractor shall provide effective fire protection and prevention at all times during such operations.

2. Confined Space: Work in enclosed areas such as sewers, vaults, vessels, manholes, pits, etc.

3. Internal Combustion: The use of cranes, forklifts, hoists, or generators powered by petroleum fuel when used on or near the building.

4. Explosive Actuated Tools: These include powder charged tools used for fastening purposes.

Not Used

SECTION 01700 - CONTRACT CLOSEOUT

1.01 GENERAL:

A. Comply with requirements stated in Conditions of the Contract and in

Specifications for administrative procedures in closing out the Work.

A. Contractor shall submit written request to the Contracting Officer’s Representative

(COR) stating the proposed date of Substantial Completion and schedule Final

Inspection.

B. Written certification shall include:

1. Contract Documents have been reviewed.

2. Project has been inspected for compliance with Contract Documents.

3. Work has been completed in accordance with Contract Documents.

4. Equipment and systems have been tested in presence of Owner's

Representative and are operational.

5. Project is complete and ready for final inspection.

C. Quality Assurance Inspector or Embassy Facilities Manager will make a pre-inspection after notification. Should the work not be complete, they will issue an inspection list to Contractor with noted items requiring further consideration.

A. Contracting Officer’s Representative will make final inspection after notification from Contractor.

B. Should COR consider Work complete in accordance with requirements of

Contract Documents, he will request Contractor to begin Final Clean-up and

Project Closeout submittals.

C. Should COR consider Work not complete:

1. Contractor shall take immediate steps to remedy the stated deficiencies and submit initialed inspection list to the COR certifying Work is complete.

2. COR will re-inspect Work.

A. Should the Contracting Officer’s Representative be required to perform subsequent inspections of the Work due to the failure of the Contractor to correct deficient work, the additional services will be deducted from the final payment to

Contractor.

A. Submit original and duplicate copies of both Contractor's Warranty and

Manufacturer's Guarantee for review. After review, Contracting Officer’s

Representative shall approve final pay application upon receipt of both

Contractor's Warranty and Manufacturer's Guarantee.

1.02 SUBSTANTIAL COMPLETION:

1.03 FINAL INSPECTION:

1.04 REINSPECTING COSTS:

1.05 WARRANTY/GUARANTEE:

1.06 EVIDENCE OF PAYMENTS AND RELEASE OF LIENS:

A. Contractor’s Release and Waiver of Liens:

1. Contractor's Waiver of Liens.

2. Separate waivers of liens for subcontractors, suppliers, and others with lien rights against property of Owner, together with complete list of those parties.

3. Consent of Surety

B. All submittals shall be notarized and sealed before delivery to the COR.

1.08 FINAL ADJUSTMENT OF ACCOUNTS:

A. Submit final statement of accounting to the COR.

B. Statement shall reflect all adjustments.

1. Original Contract Sum.

2. Additions and Deductions resulting from:

a. Previous Change Orders.

b. Deductions for uncorrected Work.

c. Deductions for Reinspection Payments.

3. Total Contract Sum, as adjusted.

4. Previous payments.

5. Sum remaining due.

1.09 FINAL APPLICATION FOR PAYMENT:

A. The Contractor shall submit one copy of all payment invoices, with the appropriate backup documents to the COR. The Contractor shall submit receipts for all allowance costs and reimbursable expenses incurred. The COR also will determine if billed services have been satisfactorily performed and if expenses billed are correct. If it is determined that the amount billed is incorrect, the COR will within seven days, request the Contractor to submit a revised invoice.

B. Final payment will not be approved or released until receipt of proper close-out documents.

CONTRACTOR’S RELEASE

PROJECT

CONTRACT NO. DATED BY

CONTRACT SUM $ DOLLARS

CONTRACTOR NAME

ADDRESS CITY STATE ZIP COUNTRY

Contractor hereby certifies that there are no outstanding obligations of the undersigned, the contracting firm, corporation, employee, dealer, subcontractor, or any others who would have standing against the property of the Government of the United

States of America (“Government”) under this contract.

In consideration of the sum stated above, upon payment of said sum to undersigned Contractor or assignees, the Government, its officers, agents, and employees are fully released and discharged of all obligations, liabilities, claims, and demands made under and arising from the contract, except:

1. Specified claims in stated or estimated amounts where the amounts are not susceptible of exact statement by the

Contractor. If none, check this box ; if yes, please check this box and itemize on reverse.

2. Claims, together with reasonable expenses incidental thereto, based upon the liabilities of the Contractor to third parties arising out of the performance of said contract, which are not known to the Contractor on the date of the execution of this release and of which the Contractor gives notice in writing to the Contracting Officer within the period specified in said contract.

3. Claims for reimbursement of costs (other than expenses of the Contractor by reason of his/her indemnification of the Government against patent liability), including reasonable expenses incidental thereto, incurred by the

Contractor under any provisions of the said contract relating to patents.

Contractor agrees, in connection with patent matters and with all claims which are not released as set forth above, that he/she will comply with all provisions of the said contract, including without limitation, those provisions relating to notification to the

Contracting Officer and relating to the defense or prosecution of litigation.

Subscribed and sworn to before me on this day of , 20 .

Notary Public:

CONTRACTOR

BY

My Commission Expires: TITLE

NOTE: In the case of a corporation as Contractor, Notarization is not required, but the certification below must be completed.

CERTIFICATE

I, , certify that I am the secretary of the corporation named as

Contractor in the foregoing release; that who signed said release on behalf of the Contractor was then of said corporation, that said release was duly signed for and on behalf of said corporation by authority of its governing body and is within the scope of its corporate powers.

CONSENT OF SURETY

PROJECT

CONTRACT NO. DATED BY

CONTRACT SUM $ IN DOLLARS

CONTRACTOR NAME

ADDRESS CITY STATE ZIP COUNTRY

The Surety (Co-sureties) consent/s to the foregoing contract modification and agree/s that its/their bond/s shall apply and extend to the contract as modified or amended.

CORPORATE / INDIVIDUAL SURETY (CO-SURETIES)

The Principal or authorized representative shall execute this consent of surety with the modification to which it pertains. If the representative (e.g. attorney-in-fact) that signs the consent is not a member of the partnership, or joint venture, or an officer of the corporation involved, a Power-of-Attorney or a Certificate of Corporate Principal must accompany the consent.

CORPORATE/INDIVIDUAL SURETY’S NAME & ADDRESS PERSON EXECUTIN

G CONSENT (SIGNATURE)

A

T

(Affix Seal) NAME

ITLE

DATE

B

(Affix Seal) NAME

DATE

C

(Affix Seal)

NAME

Date

(Affix Seal)

(Affix Seal)

DATE

TITLE

AME

SIGNATURE

N

NAME & ADDRESS OF

PRINCIPAL

DATE

TITLE

NAME

SIGNATURE NAME & ADDRESS OF

PRINCIPAL

C O

R P

O R

A

E

P R

IN

C

IP

L

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SECTION 02072 – ROOF REMOVALS AND RENOVATION WORK

1.01 SECTION INCLUDES:

A. Removal of existing corrugated fiber cement roof tiles to existing wood and/or steel frame structure. Refer to Section 02075 for ACM-specific protocols.

A. Install temporary roofing and confirm waterproofing protection prior to removals.

B. Environmental Requirements:

1. Do not remove existing roofing and flashing in inclement weather or when rain is predicted with 30 percent possibility.

2. When ambient temperature is below 15 degrees Celsius (60 degrees Fahrenheit), expose only enough cement and adhesive required within four-hour period.

C. Emergency Equipment: Maintain on-site materials necessary to apply emergency temporary seal in event of sudden storms or inclement weather.

A. Sequence removals and renovation with sequence of new work to maintain facility in dry, watertight conditions.

B. Coordinate roof work so that no more existing items are removed in one day than can be replaced with new roofing work on the same day.

A. Treatment for Wood Members: Pressure preservative treated in accordance with

AWPA C2, C9 standards, Ground Contact using Alkaline Copper Quat, Type C

(ACQ-C), Micronized Copper Quat (MCQ) and Copper Azole, Type A (CBA-A) at 6.41 kg/m3 (0.40 pounds per cubic foot) wood for use Above Ground, 4.01 kg/m3

(0.25 pounds per cubic foot).

B. Lumber for Nailers and Blocking: Standard Grade Fir or No. 2 Southern Yellow Pine bearing UL label; size shall be appropriate for application, minimum 50mm (2-inch) (nominal) thickness by 150mm (6-inch) (nominal) depth, kiln dried after treatment.

C. Plywood: Minimum 19mm (3/4-inch) APA fire rated sheathing, Exposure 1 or exterior, bearing APA trademark.

D. Fasteners:

1. Wood Substrate:

a. Securement of metal flanged items shall be nails, No. 10 gauge, galvanized steel wire with 10mm (13/32-inch) diameter head and ring shank such as No. 3255 by Dickson Weatherproof Nail Co.

b. Securement of wood to wood shall be nails, No. 9 gauge, galvanized

B. Required minor batten repair or replacement for roof repair work.

C. Modification of existing roof penetrations, equipment supports or curbs, pitch pans, reglets, piping, and electrical service to provide proper flashing height and flashing detail.

D. All other miscellaneous and incidental work required to install complete roofing system as specified and to obtain specified manufacturer's warranty.

2.01 MATERIALS:

1.02 PROJECT CONDITIONS:

1.03 SEQUENCING AND SCHEDULING:

steel wire nail with ring shank and 8mm (5/16-inch) diameter head such as No. 3055 by Dickson Weatherproof Nail Co.; length required to provide 25mm (1-inch) penetration minimum into substrate.

c. Securement of exposed items to wood substrate shall be nails, No.

10 gauge, galvanized steel wire nail with 9mm (3/8-inch) diameter head, ring shank, and EPDM rubber washer such as No. 955 by

Dickson Weatherproof Nail Co.; length required to provide 25mm

(1-inch) penetration minimum into substrate.

d. Fasteners for securing roofing materials to wood substrate shall be a hardened steel nail with a 25mm (1-inch) diameter round head and ring shank; length to provide 25mm (1-inch) penetration into substrate, as manufactured by Simplex Nail Co.

e. Fasteners for securing steel to wood substrate shall be steel wood screw with steel washer and integral rubber seal.

2. Concrete Substrate:

a. Fasteners for securing sheet metal items to concrete substrate shall be a pre-assembled drive anchor with a stainless-steel drive screw, a lead/zinc alloy expansion anchor body (6mm [1/4-inch] diameter, 38mm [1-1/2- inch] length) and a stainless steel washer with integral rubber seal (1-1/8- inch diameter) such as "Zamac Hammer-Screw" as manufactured by Powers Rawl.

b. Fasteners for securing wood blocking to concrete substrate shall be sleeved stud expansion bolt, 13mm (1/2-inch) diameter (minimum), with 19mm (3/4-inch) diameter steel washer such as "Kwik Bolt II" by Hilti.

3. Masonry Substrate:

a. Fasteners for securing wood to solid masonry shall be galvanized steel expansion anchor, 9mm (3/8-inch) diameter (minimum), with

19mm (3/4-inch) diameter steel washer such as "Countersunk Kwik

Bolt II" by Hilti.

b. Fasteners for securing wood to hollow base masonry shall be 9mm

(3/8-inch) diameter (minimum), threaded rod, with 9mm (3/4-inch) diameter washer, nut, and screen tube such as "HIT C-20 Adhesive

Anchor" by Hilti.

c. Fasteners for securing sheet metal items to concrete substrate shall be a pre-assembled drive anchor with a stainless-steel drive screw, a lead/zinc alloy expansion anchor body (6mm [1/4-inch] diameter, 38mm [1-1/2- inch] length) and a stainless steel washer with integral rubber seal (1-1/8- inch diameter) such as "Zamac Hammer-Screw" as manufactured by Powers Rawl.

4. Steel Substrate:

a. Fasteners for securing plywood to steel substrate shall be self-drilling, 38mm (1-1/2-inch) long coated 5mm (No. 10) screw with wafer head such as "Traxx Wood to Metal Fastener" by ITW Buildex.

Fasteners for securing wood nailers/blocking to steel substrate shall be self-drilling coated heavy duty screw, 6mm (1/4-inch) diameter

(minimum), with 16mm (5/8- inch) diameter washer such as 6mm

(No. 14) “Heavy Duty Screw” by OMG Roof Products.

b. Fasteners for securing steel to steel substrate shall be self-tapping

6mm (No. 14), 38mm (1-1/2-inch) long stainless steel screw with stainless steel washer and bonded integral rubber seal.

E. Plywood Clip: 0.9mm (20 gauge) galvanized steel H-clip such as "PSCL Panel

Sheathing Clip" by Simpson Strong-Tie Co., Inc.

F. Rust Inhibitive Primer: 100 percent acrylic resin primer such as “Metalclad Interior-

Exterior Acrylic Latex Flat Primer & Finish #41702”, Devoe & Raynolds Co.

3.01 EXAMINATION:

A. Examine existing building and existing roofing to determine existing physical conditions that affect removal of existing roofing and installation of new roofing.

B. Verify that required barricades and other protective measures are in place.

3.02 PREPARATION:

A. Take measures to maintain watertight conditions.

B. Install interior protection and dust partitions where deck penetrations shall be removed or replaced.

C. Protect adjacent surfaces.

3.03 REMOVAL OPERATIONS:

A. Execute removals in careful and orderly manner with least possible disturbance or damage to adjoining surfaces and structure.

B. Avoid excessive vibrations in demolition procedures that would be transmitted through existing structure and finish materials.

C. Roof Removal:

1. Remove existing construction to the extent required by the project.

2. Locate selective removal equipment throughout the structure and remove debris and materials so as not to impose excessive loads on supporting walls, floors, or framing.

3. Remove existing roofing and flashings; abandoned and obsolete equipment;

pitch pans, vents, curbs, and other such items; and sheet metal down to roof rafters and purlins.

4. Provide protective method, such as plywood set on minimum 25mm (1-inch) EPS insulation, when hauling debris over existing roof.

3.04 RENOVATION WORK:

A. Prepare substrates in accordance with roofing manufacturer's recommendations.

B. Nailers:

1. Replace damaged or deteriorated wood nailers and curbs with new nailers and curbs as required.

2. Install additional nailers as required as part of Base Bid price.

3. Clean and prepare existing surfaces to receive wood nailers and curbs.

4. Install wood nailers and curbs continuously with 6mm (1/4-inch) gap between each section. Set level and true. Pre-drill nailers prior to attachment.

5. Securely fasten to structure with appropriate fasteners to resist minimum

780N per 300mm (175 pounds per linear foot) force in any direction. Use of powder- actuated fasteners is prohibited. Place a fastener within 75mm

(3-inches) of each end of each section of wood blocking.

6. Secure nailers to concrete deck with appropriate fasteners spaced 600mm

(24-inches) on-center.

7. Secure nailers to metal deck with screws spaced 300mm (12-inches) on-center, 150mm (6-inches) on-center, 3m (10 foot) from each corner.

8. Secure nailers to wood substrate using nails 600mm (24-inches) on-center, staggered. Install nails on an angle.

9. Secure nailers with self-tapping steel fastener to steel angle, bar joist, or bulb-T if adequate substrate is not present.

10. If attaching wood nailer to vertical masonry wall, utilize appropriate anchors spaced 300mm (12-inches) on-center.

11. Reduce fastener spacing 50 percent at a distance of 3m (10 feet) from each corner.

C. Sheet Metal Fabrications:

1. Remove and replace ferrous rooftop sheet metal fabrications to match existing.

2. Modify existing sleeves and umbrellas on existing equipment as scheduled.

3. Repair and renovate non-ferrous rooftop and drainage system sheet metal fabrications as required for permanent watertight installation.

4. Paint sheet metal with metal primer.

D. Piping and Conduit Modifications:

1. Schedule piping and unit downtime for equipment modifications to coordinate with Embassy's operations.

2. Replace existing supports for units and associated piping with new supports.

3. Provide temporary supports to maintain unit and piping in operational condition except during switchover.

4. Furnish new fittings, piping, and accessories to match existing to replace deteriorated, damaged, or non-functional components or to accommodate new unit elevation, where necessary.

5. Upon completion of roof installation, paint exterior piping with aluminized paint and replace or clean jacketing.

E. Curbs and Ducts:

1. Secure and modify curbs and ducts to remain, as required to receive new roofing system.

F. Plumbing Vents:

1. Extend plumbing vents to outside plane of new metal roofing without penetrating new roof and modify as necessary to accommodate new roof installation.

2. Provide pipe extensions and couplings where necessary to achieve minimum

200mm eight above top of newly finished roof surface.

3. Utilize same material type and size as existing for new extension.

3.05 CLEANING:

A. Materials, equipment, and debris resulting from demolition operations shall become property of Contractor. Remove and dispose of demolition debris in accordance with applicable city, state, and federal laws at authorized disposal site.

B. Leave substrate clean and dry, ready to receive roofing system.

SECTION 02075 - REMOVAL OF EXTERIOR NON-FRIABLE ACM

1.01 SUMMARY:

A. Transite roof panels are not easily removed under full containment; and it is not required. Roofing is predominantly non-friable materials and not prone to significant fiber release unless severely weathered or crushed. The contractor shall be careful in cutting and handling non-friable asbestos containing material (ACM) to control any fiber release. Associated metal framing and attachment components are not to be treated as ACM.

B. Engage knowledgeable workers to remove these materials and can demonstrate a minimum of three years of successful experience in comparable scopes of work.

C. OBO/OPS/FAC/PS HazMat/Environmental Program will provide the asbestos project oversight for this work.

1.02 SUBMITTALS:

A. Before start of work, submit the following to the COR for review. Do not start work until these submittals are approved by the COR.

B. Surfactant: Submit product data, instructions and recommendations from manufacturer of surfactant intended for use. Include data substantiating that the product complies with requirements.

C. Removal Encapsulant: Submit product data, instructions and recommendations from the manufacturer of the encapsulant intended for use. Include data substantiating that product complies with requirements.

D. NESHAP Certification: Submit certifications from the surfactant and encapsulant manufacturers that the materials comply with National Emission Standards for

Hazardous Air Pollutants (NESHAP) Asbestos Regulations (40 CFR 61, Subpart M).

2.01 MATERIALS AND ACCESSORIES

A. Wetting Materials: For wetting prior to disturbance of Asbestos Containing Materials use either amended water or a removal encapsulant:

1. Amended Water: Provide water to which a surfactant had been added. Use a mixture of surfactant and water which results in wetting equal to that from the use of one ounce of a surfactant consisting or 50% polyoxyethylene ester and

50% polyoxyethylene ether mixed with five gallons of water.

2. Removal Encapsulant: Provide a penetrating type encapsulant designed specifically for removal of ACM.

3. Provide a product for wetting that is no more hazardous to workers by virtue of vapors, gases, irritation, fire hazard or other properties than a mixture of the ounce of surfactant consisting of 50% polyethylene ester and 50% polyoxyethylene ether in five gallons of water.

B. Spray Cement: Provide spray adhesive in aerosol cans which is specifically formulated to stick tenaciously to polyethylene sheeting.

C. Duct Tape: Provide duct tape in 2" (5.1 cm) or 3" (7.6 cm) widths with an adhesive that sticks aggressively to plastic sheet.

D. Plastic Sheet: 6-mil polyethylene.

E. Disposal Bags: Provide 6-mil thick leak-tight polyethylene bags labeled in English and the local language as follows:

DANGER

Contains Asbestos Fibers Avoid Opening or Breaking Container Breathing Asbestos is Hazardous to Your Health

E. PART THREE - EXECUTION

3.01 PREPARATION

A. Notification: The Contractor shall apprise all workers, supervisory personnel, and other contractors who will be at the job site of the seriousness of the hazard and of proper work procedures which must be followed.

B. Warning Signs: Warning signs shall be posted at all approaches to the roof where airborne concentrations of asbestos may exceed ambient background levels. Warning signs will display the following legend in English and the local language with letter sizes and styles of a visibility meeting requirements of 29 CFR 1926.58(k)

C. Restricting Work Area: The area surrounding the disposal collection area shall be restricted during removal of asbestos roofing material. Ground areas shall be restricted by the use of rope and construction tape and/or barricades.

E.. All electrical sources shall be locked out of the work area and a temporary source obtained, supplied with GFCI.

F. Shut Down HVAC System: Shut down HVAC system if the air intake is located on or near the roof or work area. Seal all vents or duct openings with 6-mil poly taped securely in place, unless vents directly feed air for water/waste systems actively is use. Provide for a complete isolation of the work area from the remaining portion of the building.

3.02 REMOVAL OF ACM:

A. No visible emissions of any type shall be allowed during the removal procedures.

Wet removal methods shall be employed by the Contractor during asbestos removal procedures by fine-water misting. Care shall be taken not to soak underlying roof or wall components, deck or insulation. Severely weathered ACM shall be sprayed with a bridging or removal encapsulant prior to removal.

B. Roof transite panels may have a high asbestos content and special care should be taken to remove this part of the work. The Contractor shall take care not to over saturate this layer with amended water. Saturation of the underlying deck structure shall be avoided which will cause a poor roof seal and allow water to enter into the existing building components.

C. Decontamination: After removal of ACM is complete, the roof decking, perimeter walls, poly and all other surfaces shall be wet wiped or washed down to decontaminate them. If organic solvents are used for this process, appropriate respirator filters for organic vapors shall be used by workers.

D. All ACM waste shall be double bagged and taped prior to removal for the work area for disposal. The bags or wrapped waste shall be decontaminated and have appropriate labeling before entering the disposal vehicle or dumpster.

E. Waste Disposal: Asbestos waste shall be disposed of in accordance with the host country's hazardous waste disposal requirements. Costs associated with the disposal of asbestos waste, i.e. licenses, permit, landfill fee and transportation, shall be included in the Contractor's proposal. The Contractor shall secure licenses that are required by applicable host country's authorities having jurisdiction over the transportation and disposal of asbestos waste.

3.03 CLEANING AND PROTECTION

A. Clearance Criteria: A thorough visual inspection shall be conducted by the Project

Director to ensure all remaining layers of ACM have been removed and the deck or exposed surfaces have been decontaminated.

B. Removal of Barriers: Once final clearance criteria has been met, the barriers shall be taken down unless being used for other phases of the project, but taken down when work is complete.

C. Clear Work Area: Remove all signs, equipment and other disposables and leave the property in a similar condition in which it was found.

SECTION 07410: SHEET METAL ROOF PANELS

A. Provide labor, materials, tools, and equipment for installation of metal roofing panels, associated trim, and flashings.

B. Provide related components, transitions, and accessories.

1.02 REFERENCE:

A. American Society for Testing and Materials (ASTM).

B. Sheet Metal and Air Conditioning Contractor's National Association:

Architectural Sheet Metal Manual. (SMACNA)

C. National Roofing Contractor's Association: NRCA Roofing and Waterproofing

Manual.

D. Metal Building Manufacturer’s Association (MBMA).

1.04 SUBMITTALS:

A. Product Data: Manufacturer's Standard Catalog

B. On-site Samples: Submit samples for proposed material. Submit one 300 mm (12-inch) long sample of proposed material and finish.

1.05 QUALITY ASSURANCE:

A. Manufacturer:

1. Single-Source: Utilize coil/sheet produced by one manufacturer. Provide roof panels and prefabricated flashing from material of a single manufacturer.

2. Provide secondary fabricated materials which are acceptable to the manufacturer and panel fabricator.

B. Applicator:

1. Approved by manufacturer of accepted roof system.

2. A single applicator with a minimum of five years previous successful experience in installations of similar systems.

C. Regulatory Requirements:

1. System shall be classified by Underwriter's Laboratories, Inc. as a Class A roof covering.

2. Refer to applicable building codes for roofing system load design requirements. When a conflict exists, the more restrictive document will govern.

D. Installation:

1. Install in accordance with manufacturer's current published application procedures and the general recommendations of the American Metal

Roofing Association.

2. All roofing shall be provided and/or approved by the roof system manufacturer. Any materials not manufactured or provided by manufacturer shall have written approval from the manufacturer stating that the materials are acceptable and are compatible with the other materials and systems required.

E. Field Measurements: Where possible, prior to fabrication of prefabricated panels, take field measurements of structural or substrate to receive panel system. Allow for trimming panel units where final dimensions cannot be established prior to fabrication.

1.06 APPLICABLE STANDARDS:

A. UL580, “Tests for Uplift Resistance of Roof Assemblies;” Class 90.

B. ASTM E 1680, “Standard Test Method for Rate of Air Leakage Through Exterior

Metal Roof Panel System”.

C. ASTM E 1646, “Standard Test Method for Water Penetration Through Exterior

Metal Roof Panel Systems”; no uncontrolled water infiltration.

1.07 PROJECT CONDITIONS:

A. Protection:

1. Provide protection or limit traffic on the existing roof.

2. Provide protection of finish on metal panels during storage, installation, and construction.

B. Store and handle in strict compliance with manufacturer's instructions and recommendations.

1. Stack materials on platforms or pallets, covered with tarpaulins or other suitable weathertight ventilated covering. Slope cover to shed moisture.

Allow for free air flow around covered material to exchange outside air.

2. Do not store panels in contact with other materials that might cause staining, denting, or other surface damage.

3. Store all panels and flashings so that they will not accumulate water.

1.08 WARRANTY:

A. Provide a TWENTY year manufacturer’s weather tightness warranty that the manufactured roof panels, flashing, and related items used to attach the roof panels and flashing to the roof structure will not allow water infiltration through the metal roof system into the building envelope. Warranty shall include panel finish against cracking, checking, blistering, peeling, flaking, chipping, chalking, and fading.

2.01 METAL PANEL MANUFACTURERS:

A. Design based on Lysaght PU-Rib or approved equivalent.

2.02 PRIMARY MATERIALS:

A. Roof Panels:

1. Style: Lysaght PU-Rib 29-760 with PVC facing (white color). Metal sheet: Jade

Green color.

2. Profile: Nominal 43 mm (2-inch) high standing seam by 700 mm (28-inch) width.

3. Steel Grade: G550

4. Insulated layer: PU Foam with the Density at least 30 kg/m3, Compressive strength of 100 kPa (Min) and Thermal Conductivity of 0.021-0.030 W/m.K.

5. Texture: As determined by Embassy

6. Color: As determined by Embassy

B. Fasteners:

1. Exposed fasteners shall be self-tapping stainless steel screws with steel backed neoprene washers and pre-finished heads, color to match panel.

2. Clip-to-Wood Substrate: Wood screw suitable for penetrating through substrate minimum 19 mm (3/4-inch), as approved by manufacturer.

C. Accessories:

1. Sheet metal accessories shall be as standard and custom with the system manufacturer.

2. Material used in flashing and transition parts and furnished as standard by manufacturer may or may not match the roof panel material. Parts shall by compatible and shall not cause a corrosive condition. Do not use copper and/or lead materials with zinc coated panels.

3. Perpendicular and Parallel Wall Flashings: Fabricate flashing from material matching existing.

4. Tape Sealants: 25 mm (1-inch) wide pressure sensitive, 100 percent solid, butyl sealing tape with a release paper backing.

D. Required Performances: Fabricate panels and other components of roof system for the following installed-as-indicated performances:

1. Roof Loading: 1,916 N/m2 (40 pounds per square foot) inward; 719 N/m2

(15 pounds per square foot) outward.

2. Water Penetration: No significant, uncontrolled leakage at 192 N/m2 (4 pounds per square foot) pressure with spray test.

3. Air Infiltration: 0.02 cfm per square foot for gross roof areas, with 192

N/m2 (4 pounds per square foot) differential pressure.

E. Fabricate panel joints with captive gaskets or separator strips which provide a tight seal and prevent metal-to-metal contact.

2.03 FABRICATION:

A. Provide continuous maximum panel length to suit project conditions to eliminate or minimize panel end lap splices. Roll form panels in continuous lengths, full length of detailed runs from ridge to eave.

B. Fabricate sheet metal roofing panels to allow for expansion in running work sufficient to prevent leakage, damage, and deterioration of the Work.

1. Form exposed sheet metal work to fit substrates without excessive oil canning, buckling, and tool marks, true to line and levels indicated, and with exposed edges folded back to form hems.

2. Form and fabricate sheets, seams, strips, cleats, edge treatments, integral flashing, and other components of metal roofing to profiles, patterns, and drainage arrangements shown and as required to resist Water Infiltration without excessive use of sealants (dry joints) while also allowing any water infiltration behind the roof panels to weep out.

C. Fabricate trim, flashing, and accessories to detailed profiles and from same material as roof panel.

2.04 TRANSPORTATION:

A. 12-Meter-long trailer for material delivery can access through Main gate (MCAC) at Rajdamri Road.

3.01 GENERAL:

A. Comply with roof panel fabricator's and material manufacturer's instructions and recommendations for installation as applicable to project conditions and supporting substrates. Anchor panels and other components of the work securely in place, with provisions for thermal/structural movement.

B. Install work to be truly straight and square or conform to curvilinear geometry indicated on drawings.

1. Fabricate and install work with lines and corners of exposed units true and accurate.

2. Form exposed faces free of buckles, excessive waves, and avoidable tool marks considering temper and reflectivity of metal.

3. Shim and align panel units within installed tolerance of 6 mm

(1/4-inch) in 6 m (20 feet).

4. All seams shall be of uniform appearance and dimensions, straight and level with minimum exposure of solder and sealant.

5. Except as otherwise shown, fold back sheet metal to form a hem on concealed side of exposed edges.

6. Form all seams to be weatherproof, leaving room for expansion and contraction with specified and required tolerances.

F. Conceal fasteners and expansion provision where possible in exposed work, and locate so as to minimize possibility of leakage. Cover and seal fasteners and anchors as required for a tight installation.

G. To avoid material tearing, provide cuts with rounded notching tool or cut to pre-drilled hole. Only use smooth edge (non-serrated) shears and snips for metal cutting.

H. Provide indirect attachment of exposed metal with concealed "keeper" whenever possible. Avoid exposed and direct fastening especially at lap locations to allow movement.

A. Roof Panel Installation:

1. Install edge panel metal sheet and use fasteners for securing steel to steel substrate which shall be self-tapping stainless steel or galvanized coating with stainless steel washer and bonded integral rubber seal on every steel substrate (purlin).

2. Space fasteners in accordance with manufacturers’ requirements to achieve specified wind uplift resistance. Maximum spacing shall not

3.02 INSTALLATION:

exceed 500mm (20-inch) on center.

3. Attach panels to clips and install panels so they are weathertight, without waves, warps, buckles, fastening stresses, or distortion. Allow for expansion and contraction of materials.

4. Install panels plumb, in plane, and straight with joints parallel to one another and the building line. Panel plane shall be true to 6 mm (1/4-inch) in 6 m (20 feet), shim substrate surface as required.

5. Mechanically secure panels at designated anchorage points as required by manufacturers.

6. Apply continuous double line of sealant from ridge to eave at panel overlap.

7. Mobile cranes can be used for roof installation. Contractor must submit Crane model with technical machine information, Crane Certification, Operator of crane Certification, Crane Operation Plan for approval.

B. Roof Panel Flashings:

1. Provide standard and custom pre-fabricated sheet metal flashings and components at ridges, eaves, rake edges, head/side walls, and roof curbs.

2. Secure flashings to panels utilizing concealed clips, Z-closures, and…