Attachment_3_Scope_of_Work.pdf

ATTACHMENT 3

U.S. DEPARTMENT OF STATE

OBO FACILITIES MANAGEMENT DIVISION

STATEMENT OF WORK

FOR

29 GOWER STREET RESIDENCE ROOF REPLACEMENT

COLOMBO, SRI LANKA

January 27, 2017

TABLE OF CONTENTS 2

UNITED STATES DEPARTMENT OF STATE

RES 29 GOWER ST. ROOF REPLACEMENT

PERFORMANCE SPECIFCATIONS

SECTION 00003 – TABLE of CONTENTS

Division 1

01020 - Summary of Roof Work

01535 - Roof Construction Safety

01700 - Project Close-out Division 2

02072 - Roof Removals and Renovation Work Division 3

Not Used Division 4

04200 - Concrete Masonry Division 5

Not used Division 6

06120 - Rough Carpentry Division 7

07410 - Standing Seam Metal Roof Panels

07525 - Modified Bitumen Roofing

07620 - Sheet Metal Flashing 07920 - Sealants Division 8

08510 - Aluminum Windows Division 9

09910 - Exterior Painting

Division 10 – 12 Not used Division 13

Not Used

Division 14 – 16

Not Used Division 17

17000 - Temporary Electromechanical Disconnects

END OF TOC

OBO/CFSM/FAC Roof & Facade Management Program “Two antennas met on a roof, fell in love and got married.

The ceremony wasn't much, but the reception was excellent.”

SUMMARY OF ROOF WORK 01020 - 1

RES 29 GOWER ST. ROOF REPLACEMENT

COLOMBO, SRI LANKA

SECTION 01020 - SUMMARY OF ROOF WORK

PART ONE - GENERAL

1.01 SUMMARY:

A. Roof replacement and roof related repairs of the existing residence located at 29 Gower Street in Colombo, Sri Lanka. The work includes, but is not limited to, the following:

B. Design Base Roof Systems:

1. Roof Area: A, B, C, D, G,H:

a. Removal and disposal of existing clay tile or sheet metal roofing to structural framing.

b. Temp. remove solar panels

c. Installation of treated wood batten system.

e. Installation of new reflective foil insulation/underlayment.

d. Installation of new metal roof panels.

f. Installation of new flashings at penetrations, curbs, walls, and perimeters.

g. Installation of new sheet metal gutters.

2. Roof Area E:

a. Removal and disposal of existing membrane to the existing structural wood deck. Repair the concrete deck as needed.

b. Removal of existing skylight and metal framing down to concrete curb.

c. construction of new clearstory on existing skylight curb.

d. Installation of new two ply torch applied modified bitumen roof membrane.

e. Installation of new flashings at penetrations, curbs, walls, and perimeters.

f. Installation of new termination bar, stainless steel counterflashing in saw cut reglet.

g. Modification to existing equipment curbs, as necessary.

3. Roof Area F & J: No work to be performed

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. Shop Drawings of all specific waterproofing details.

D. Material manufacturer's product data sheets, written approval/acceptance of specified tests for project, fastener pattern layout, details, insulation, and all

SUMMARY OF ROOF WORK 01020 - 2

RES 29 GOWER ST. ROOF REPLACEMENT

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related materials based upon existing site conditions.

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:

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

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

3. 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.

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

5. 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:

1. Membrane Seam Adhesion Test

2. 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

SUMMARY OF ROOF WORK 01020 - 3

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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.

1.07 PROJECT PROCEDURES:

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

B. Contractor shall conduct his operations so as to ensure least inconvenience to Owner's operations.

C. Contractor shall take precautions to avoid excessive noise or vibration that would disturb Owner's operations. When directed by Owner, Contractor shall perform certain operations at designated time of day or night in order to minimize disturbance to Owner's operations.

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

PART TWO - PRODUCTS

Not Used.

PART THREE - EXECUTION

3.01 PERIOD OF PERFORMANCE:

A. Award of Contract:

B. Pre Construction Submittals: Within 25 days of contract award C. Construction:

1 . M a t e r i a l P r o c u r e m e n t : 3 0 d a y s 2 . T o t a l O n - S i t e Con s t r uc t i on 30 da ys on - s i t e

D. Final Cleanup Begins: 5 days prior to completion

E. Total Period of Performance: 90 days F. Rainy Season: April - May & Oct - Nov

3.02 PROPOSAL SCHEDULE:

A. Proposals shall be evaluated based on an order of precedence and available funds to complete the project. Each Roof Area proposal shall include labor, materials, overhead, profit, travel expenses and worker incidentals as a complete project.

END OF SECTION

01/14 SUMMARY OF WORK 01535 - 1

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SECTION 01535 – ROOF CONSTRUCTION

SAFETY PART ONE - GENERAL

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.

1.02 REGULATIONS AND STANDARDS

A. Governing regulations: Latest edition of U.S. Army Corps of Engineers (COE) Safety and Health Requirements Manual, EM 385-1-1

1.03 SUBMITTALS

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.

1.04 QUALITY ASSURANCE

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:

01/14 SUMMARY OF WORK 01535 - 2

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1. Provide for frequent safety, health, and housekeeping inspections conducted by the Safety and Health Program Manager, temporary structures, fabrication shops, material, machinery and equipment.

2. Quality Assurance Inspectors, as part of their QA responsibilities, shall conduct and document daily safety, health, and housekeeping inspections; and impose fines on the Safety and Health Program Manager by sending him through a Spanking Machine for every infraction of the CAPP noted on the job site.

C. Tool Box Meetings: Hold safety meetings once each week. Require attendance by all laborer, and supervisors; include those of separate contractors. Contractor shall consider the following check-list:

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

PART TWO - PRODUCTS

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.

01/14 SUMMARY OF WORK 01535 - 3

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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.

PART THREE - EXECUTION

Not Used

01/14 CONTRACT CLOSEOUT 01700 - 1

RES 29 GOWER ST. ROOF REPLACEMENT

COLOMBO, SRI LANKA

SECTION 01700 - CONTRACT CLOSEOUT

PART ONE - GENERAL

1.01 GENERAL:

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

Specifications for administrative procedures in closing out the Work.

1.02 SUBSTANTIAL COMPLETION:

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 post 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.

1.03 FINAL INSPECTION:

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 reinspect Work.

1.04 REINSPECTING COSTS:

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.

1.05 WARRANTY/GUARANTEE:

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.

01/14 CONTRACT CLOSEOUT 01700 - 2

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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.

PART TWO - PRODUCTS

Not Used.

PART THREE - EXECUTION

Not Used.

CONTRACTOR’S RELEASE

01/14 CONTRACT CLOSEOUT 01700 - 3

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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.

01/14 CONTRACT CLOSEOUT 01700 - 4

I , UNITED STATES DEPARTMENT OF STATE

RES 29 GOWER ST. ROOF REPLACEMENT

COLOMBO, SRI LANKA

Subscribed and sworn to before me on this ____day of __________________ , 20____.

CONTRACTOR

Notary Public:

B Y

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

______________________________ , 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.

NAME & ADDRESS OF PRINCIPAL SIGNATURE

NAME

NAME & ADDRESS OF PRINCIPAL

Se

IN

D

IV

ID

U A

L

P R

IN

C

IP

C O

R P

O R

A T

E

P R

IN

C

IP

(Affix Seal)

(Affix

T ITLE

DATE

SIGNATURE

NAME

T ITLE

01/14 CONTRACT CLOSEOUT 01700 - 5

CORPORATE/INDIVIDUAL SURETY’S NAME & ADDRESS PERSON EXECUTING CONSENT (SIGNATURE)

N A M E

T ITLE

B (Affix Seal)

UNITED STATES DEPARTMENT OF STATE

D A T E

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 off icer of the corporation involved, a Power-of-Attorney or a Certificate of Corporate Principal must accompany the consent.

NAME

TITLE

C NAME

TITLE

Da t e

REMOVALS AND RENOVATION WORK 02072 - 1

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SECTION 02072 – ROOF REMOVALS AND RENOVATION WORK

PART ONE - GENERAL

1.01 SECTION INCLUDES:

A. General:

1. Removal of existing roofing, abandoned equipment, flashing, and sheet metal.

2. Removal of existing skylight down to concrete pad.

3. Deck repair or replacement for roof repair work.

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

5. All existing gutters and downspouts to be removed

1.02 PROJECT CONDITIONS:

A. 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.

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

1.03 SEQUENCING AND SCHEDULING:

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

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

PART TWO - PRODUCTS

2.01 MATERIALS:

A. Wood Treatment: Pressure preservative treated in accordance with AWPA C2, C9 standards, using Chromated Copper Arsenate (CCA) at 0.1kg per 0.03cm (0.40 pounds per cubic foot) wood. Preservatives shall be compatible with roof membrane.

B. Lumber (Members, Nailers, and Blocking):

1. Standard Grade Fir or No. 2 Southern Yellow Pine bearing UL label. Size shall be appropriate for application, minimum 50mm (2-inch) (nominal) thickness.

2. Moisture Content: 19 percent maximum at time of installation.

C. Fasteners:

1. Wood Substrate:

a. Securement of metal flanged items shall be nails, No. 10 gauge, REMOVALS AND RENOVATION WORK 02072 - 2

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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 steel wire nail with ring shank and 8mm (5/16-inch) diameter head such as No. 3055 by Dickson Weatherproof Nail Co. (800/572-9351); 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. (800/572-9351); 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 wood to steel substrate shall be self-drilling

REMOVALS AND RENOVATION WORK 02072 - 3

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coated heavy duty screw, 6mm (1/4-inch) diameter (minimum), with 16mm (5/8-inch) diameter washer such as "#14 Heavy Duty Screw" by Olympic.

b. Fasteners for securing steel to steel substrate shall be self-tapping steel screw with steel washer and integral rubber seal.

D. Rust Inhibitive Primer: 100 percent acrylic resin primer such as “Metalclad Interior-Exterior Acrylic Latex Flat Primer & Finish #41702”, Devoe & Raynolds Co.

E. Non-shrink Grout: Nonshrink, noncorrosive, grouting compound; CRD-C-621, Type D, such as “Sonogrout 10K”, Sonneborn Building Products, or approved equal.

F. Deck Repair Materials - Lightweight Insulating Concrete and Poured Gypsum Repair Material: Quick-setting, cementitious-based material such as "Pyrofil", as manufactured by U.S. Gypsum Co. or “Strong Seal Quick Leveling Roof Material” by The Strong Co., Inc. (800/982-8009).

PART THREE - EXECUTION

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 during term of Contract.

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 demolition 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. Demolish and 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, insulation, and flashings; abandoned and obsolete equipment; pitch pans, vents, curbs, and other such items; and sheet metal down to roof rafters.

4. Do not stockpile debris on roof surface. Promptly dispose of obsolete equipment and debris at authorized disposal site each day. Use chutes to transfer debris from roof surface to dumpsters.

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5. 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. Wood Rafters:

1. All construction shall be in accordance with the latest edition of the “timber construction manual” and latest supplements.

2. Comply with PS 1 “U.S. product standard for construction and industrial plywood” for plywood panels, and policies for structural-use panels” Form no.

E445.

3. Contractor shall measure existing wood framing members to provide matching replacement members.

4. Rough carpentry: 1500 psi minimum fiber stress structural grade lumber, double headers at all openings, metal tie strap all rafters, Simpson or equal

C. 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 wood substrate using nails 600mm (24-inches) on-center, staggered. Install nails on an angle.

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

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

D. Rooftop Equipment:

1. When units or equipment are to be moved, disconnect and move to protected area to prevent damage to parts or components. Reset and reconnect at Contractor's expense.

2. Disconnection and reconnection shall be performed by mechanical and/or electrical company licensed to perform such work and approved by Owner's Representative.

E. Piping and Conduit Modifications:

1. Schedule piping and unit downtime for equipment modifications to coordinate with Owner's operations. Switchover time shall be limited to meet Owner's requirements.

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

3. Provide temporary supports to maintain unit and piping in operational

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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 piping with aluminized paint and replace or clean jacketing.

F. Plumbing Vents:

1. Extend plumbing vents or 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.

G. Ventilators: Raise ventilators as required for 200mm minimum flashing height.

H. 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. Paint sheet metal with metal primer.

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.

UNITED STATES DEPARTMENT OF

STATE RES 29 GOWER ST. ROOF

REPLACEMENT COLOMBO, SRI LANKA

Section 04200 - Concrete Masonry Specification

PART 1- GENERAL

1.01 SECTION INCLUDES

A. Construction of new masonry clearstory structure on existing skylight concrete curb.

1.02 RELATED SECTIONS

A. 02072- Removals and Renovation Work

B. 09210- Plaster Restoration

1.03 QUALITY ASSURANCE

B. Single Source Responsibility for Masonry Units: Obtain exposed masonry units of uniform texture and color, or a uniform blend within the ranges accepted for these characteristics, from one manufacturer for each different product required for each continuous surface or visually related surfaces.

C. Single Source Responsibility for Mortar Materials: Obtain mortar ingredients of uniform quality including color for exposed masonry, from one manufacturer for each cementitious component and from one source and producer for each aggregate.

1.06 DELIVERY, STORAGE, AND HANDLING

A. Deliver masonry material to project in undamaged condition. Store and handle materials to prevent their deterioration or damage due to moisture, temperature, changes, contaminants, and corrosion or other causes.

B. Limit moisture absorption of concrete masonry units during delivery and until time of installation.

C. Store cemenitious materials off the ground, under cover and in a dry location. PART 2-PRODUCTS

2.01 MASONRY UNITS, GENERAL

A. Manufacturer: All concrete masonry units shall be manufactured by BUILDING PRODUCTS CORP. 950 Freeburg Ave., Belleville, IL 62220, 800-233-1996.

B. Obtain masonry units from one manufacturer, of uniform texture and color for each kind required, for each continuous area and visually related areas.

2.02 CONCRETE MASONRY UNITS

A. General: Comply with referenced standards and other requirements indicated below applicable to each form of concrete masonry unit required.

B. Provide special shapes where required for lintels, jambs, corners, sash, control joints, headers bonding and other special conditions.

RES 29 GOWER ST. ROOF

REPLACEMENT COLOMBO, SRI LANKA

C. Concrete Block: Provide units complying with characteristics indicated below for Face Size, Exposed Face, and under each form of block included for weight classification.

1. Size: Manufacturer’s standard units with nominal face dimensions of 16” long x 8” high (15 5/8” X 7 5/8”actual) x thickness indicated.

D. Hollow Load-Bearing Block ASTM C-90, normal weight (125 lbs. per cubic foot dry weight).

2.03 MORTAR AND GROUT MATERIALS

A. Portland Cement: ASTM C-150, Type I, except use Type III for construction below 40 Degrees F. Provide natural color or white cement as required to produce required mortar color.

B. Hydrated Lime: ASTM C-207, Type S.

C. Aggregate for Mortar: ASTM C-144, except for joints less that 1/4 inch use aggregate graded with 100% passing the No. 16 sieve.

1. White Aggregates: Natural white sand or ground white stone.

D. Aggregate for Grout: ASTM C-404.

E. Water: Clean and potable.

F. Accelerators: Subject to compliance with requirements.

2.06 MORTAR AND GROUT MIXES

A. Mortar for Unit Masonry: Comply with ASTM C-270, Proportion Specifications, Cement-Lime Mortar, for types of mortar required, unless otherwise indicated.

1. Use Type N mortar for interior non-load bearing walls.

a. Air Content: 8-14% Maximum.

B. Limit Cementitious materials in mortar to Portland cement-lime.

C. Grout for Unit Masonry: Comply with ASTM C-476. Use grout of consistency which at time of placement will completely fill all spaces intended to receive grout

1. Mix: Portland cement, sand, gravel and water, proportioned as required to provide a 28- day minimum compressive strength of 3000 PSI.

2. Use for reinforced masonry lintels or bond beams, reinforced masonry piers, and wherever grouting full is indicated or specified.

2.07 JOINT REINFORCEMENT, TIES AND ANCHORS

A. Materials: comply with requirements indicated below for basic materials, as well as requirements for each form of joint reinforcement, tie and anchor for size and other characteristics.

REPLACEMENT COLOMBO, SRI LANKA

B. Hot –Dip Galvanized Steel Wire: ASTM A-82 for uncoated wire and with ASTM A- 153, Class B-2(1.5 oz. per sq. ft. of wire surface) for zinc coating applied after pre-fabrication into units.

C. Joint Reinforcement: Welded-wire units prefabricated with deformed continuous side rods and plain cross rods into straight lengths of not less than 10’-0”, with prefabricated corner and tee units.

1. Width: approximately 2” less than nominal width of walls and partitions, to provide mortar coverage of not less that 5/8” on joint faces exposed to exterior and 1/2” elsewhere.

2. Wire Size for Side Rods: 9 gauge.

3. Wire Size for Cross Rods: 9 gauge.

4. Wire Size for Two-Part Reinforcing: 3/16” diameter in exterior walls.

5. Configuration:

a. Single-Wythe Masonry: Truss design with continuous diagonal cross rods spaced not more than 16” o.c.

G. Anchor Bolts: Provide steel bolts with hex nuts and flat washers complying with ASTM A-307, Grade A, hot-dip galvanized to comply with ASTM C-153, Class C, in sizes and configuration indicated.

I. Reinforcing Bars: Deformed steel, ASTM A-615, Grade 60 for Bars No. 3- No. 18.

PART 3- EXECUTION

3.01. PREPARATION

A. Establish Lines, Levels, and Coursing:

1. Protect lines from disturbance.

2. Use non-corrosive material in contact with masonry.

B. Surface Preparation: Prior to placing Concrete Masonry remove laitance, loose aggregate or other material that would prevent mortar from bonding to the foundation.

3.02 COURSING

A. Placement: Place Concrete Masonry Unit to lines and levels indicated.

B. Uniformity: Maintain masonry courses to uniform width. Make vertical and horizontal joints equal and of uniform thickness.

C. Bond Patterns: Place Concrete Masonry in 1/2 running bond unless otherwise noted.

D. Course Height: Course one Concrete Masonry and one mortar joint equal to 4 inches.

REPLACEMENT COLOMBO, SRI LANKA

3.03 PLACING AND BONDING

A. Bed and Head Joints:

1. Joint Thickness:

a. Construct 3/8 inch bed and head joints unless otherwise indicated.

b. Construct bed joint at starting course on foundation not less than 1/4 inch and not more than 3/4 inch.

2. Fill holes not specified in exposed and below grade masonry with mortar.

3. Tool head and bed joints concave unless below grade or above ceiling height and to be concealed.

a. Use tool with large enough radius that joint is not raked free of mortar.

4. Remove masonry protrusions extending 1/2 inch or more into cells and cavities to be grouted.

B. Unit Placement

1. Concrete Masonry Unit- Lay units with bed and head joints filled from the faces of the units to a distance in not less than the thickness of the face shell.

a. Webs are fully mortared in all courses of piers, columns, pilasters, starting course on footings or foundations, and where adjacent to cells or cavities to be reinforced or filled with concrete or grout.

b. Spread out full mortar bed including areas under cells, for starting course on footings where cells are not to be grouted.

c. Vertical cells to be grouted are aligned and unobstructed openings for grout are provided in accordance with drawings.

2. In-Progress Cleaning:

a. Remove excess mortar.

b. Dry brush exposed masonry prior to the end of each workday.

c. Protect wall from mud splatter and mortar droppings.

i. Set scaffolds and scaffold boars so that mortar is not deflected onto masonry.

ii. At end of each workday turn scaffold boards so that rainwater is not deflected onto masonry.

d. Place Concrete Masonry Unit such that mortar does not run down the face of the wall or smear the masonry face.

REPLACEMENT COLOMBO, SRI LANKA

3. Isolate masonry partitions from vertical structural framing members with the control joint.

3.04 TOLERANCES: Erect masonry within the following tolerances from specified dimensions:

A. Dimensions of Elements:

1. In cross-section or elevation: -1/4 inch, +1/2 inch.

2. Mortar joint thickness:

a. Bed: Plus or minus 1/8 inch or plus 1/8 inch.

b. Head: plus 3/8 inch or minus 1/4 inch.

c. Collar: plus 3/8 inch or minus 1/4 inch.

3. Grout space or cavity airspace except where passing framed construction:

plus 3/8 inch or minus 1/4 inch.

3.05. REINFORCEMENT AND ANCHORAGES

A. Basin Requirements:

1. Place reinforcement and anchorages in accordance with the sizes, types, and locations indicated on the Drawings, and as specified.

2. Do not place dissimilar metals in contact with each other.

B. Details of Reinforcement:

1. Completely embed reinforcement in grout in accordance with Article3.08.

2. Maintain clear distance between reinforcing bars and any face of masonry unit or formed surface:

a. Not less than 1/4 inch for fine grout.

b. Not less than 1/2 for coarse grout.

3. Splice only where indicated on Drawings, unless otherwise specified.

4. Do not bend reinforcing bars after embedded in grout.

5. Place vertical reinforcing bars supported and secured against displacement by means of bar positioners.

6. Support bars other than vertical bars and tie to prevent displacement.

3.06. BUILT-IN AND EMBEDDED ITEMS AND ACCESSORIES

A. Incorporation: As work progresses build in metal doorframes, fabricated metal frames, window frames, anchor bolts, diaphragm anchors, embedded plates, and other items in the work supplied in other Sections.

REPLACEMENT COLOMBO, SRI LANKA

B. Metal Glazed Frames:

1. Embed anchors in mortar joints.

2. Fill frame void solid with grout.

3. Fill masonry cores with grout minimum 12 inches from framed openings.

C. Accessories: Install and secure connectors, flashing, weep holes, mailing blocks, reglets and other accessories.

1. Install reglet level and parallel to building lines. Set reglet as indicated on Drawings to coordinate with sloped roof surface.

3.07. GROUT PLACEMENT

A. Placement:

1. Place grout within 1-1/2 hours of introducing of mixing water and prior to initial set.

2. Prevent grout from flowing onto or otherwise staining faces of CMU intended to be exposed.

B. Confinement: Confine grout to the area indicated on the

Drawings. 3.08. LINTELS

A. Steel Lintels:

1. Install loose steel lintels as scheduled.

2. Provide 9 gage Z- ties at each vertical joint of soap units covering steel lintels.

Weld Z-ties to web of steel lintel.

B. Concrete Masonry Lintels:

1. Install reinforced unit masonry lintels over openings where steel lintels are not scheduled.

2. Construct lintels using grout fill and reinforcing.

a. Maintain minimum 8 inch bearing on each side of opening unless otherwise noted on Drawings.

b. Use reinforcing bars on one-piece lengths only.

c. Place and consolidate grout without disturbing reinforcing.

3. Allow lintels to reach strength before removing temporary supports.

3.09. CLEANING

A. Final Cleaning:

REPLACEMENT COLOMBO, SRI LANKA

1. After mortar has set, reached initial curing; within 7 days of completion of work for custom masonry units, clean exposed masonry as follows:

2. Remove large mortar particles by hand with wooden paddles and non-metallic scrape hoes or chisels.

3. Cut out any defective mortar joints and holes and re-point with mortar.

4. Protect non-masonry surfaces from contact with cleaning solution by covering them with liquid strippable masking agent, polyethylene film, or waterproof masking tape.

END OF THIS SECTION

ROUGH CARPENTRY 06120 - 1

RES 29 GOWER ST. ROOF REPLACEMENT

COLOMBO, SRI LANKA

SECTION 06120 - ROUGH CARPENTRY

PART ONE - GENERAL

1.01 SECTION INCLUDES:

A. Installation of wood fascia, rafter tails, battens, and miscellaneous framing as indicated and as necessary to provide proper substrate for metal roof system and flashings.

1.02 RELATED SECTIONS:

A. 02072 – Roof Removals and Renovation Work.

C. 07410 - Standing Seam Metal Roofing.

1.03 QUALITY ASSURANCE:

A. Provide sufficient workmen and supervisors who shall be present at all times during execution of this portion of the work and who shall be thoroughly familiar with the type of construction involved and the materials and techniques specified.

B. All work shall conform to pertinent standards

1.04 DELIVERY, STORAGE, AND HANDLING:

A. Store all materials up, off the ground, and covered with a weatherproof covering anchored sufficiently so as to resist wind blow-off.

B. Keep all materials clearly identified with all grade marks legible. Keep all damaged material clearly identified as damaged and store separately to prevent its inadvertent use.

C. Do not allow installation of damaged or otherwise non-complying material.

D. In the event of damage, immediately make all necessary repairs and replacements to the approval of Government's On-site Representative and at no additional cost to Owner.

PART TWO - PRODUCTS

2.01 MATERIALS:

A. Preservative Treatment for Wood Members, Nailers, and Blocking: Pressure preservative treated in accordance with AWPA C2 and C9 Standards, using ACQ or similar preservative at 6.41 Kg/m3 (0.40 pounds per cubic foot). Preservatives shall be compatible with roof membrane or underlayment.

B. Lumber:

1. Noncombustible Standard Grade Fir or No. 2 Southern Yellow Pine bearing UL label.

2. Moisture Content: 19 percent at the time of installation.

3. Lumber Sizes:

a. Rafters: Match existing.

b. Ridge and Hip Boards: Match Existing.

c. Wood Deck: Match Existing.

d. Nailers: 38mm (1-1/2-inches) by 88mm (3-1/2-inches).

e. Vertical Battens: 25mm (1-inch) by 50mm (2-inches).

f. Horizontal Battens: 25mm (1-inch) by 50mm (2-inches).

ROUGH CARPENTRY 06120 - 2

RES 29 GOWER ST. ROOF REPLACEMENT

COLOMBO, SRI LANKA

C. Fasteners:

1. Nail: Stainless steel ring shank nails, 11 gauge diameter of sufficient length to penetrate 38mm (3/4-inch) into or through the thickness of the deck or batten.

2. Screw: #8 diameter stainless steel wood screw.

PART THREE - EXECUTION

3.01 BATTEN INSTALLATION:

A. Battens shall be cut to size. Ends of adjoining battens shall be beveled cut to fit snug.

B. Secure battens to wood deck using appropriate fastener.

C. Vertical Battens: Secure vertical battens to substrate using appropriate fastener spaced 300mm (12-inches) on-center. Install vertical battens positioned over rafter or structural support and at 600mm (24-inches) on-center.

D. Position horizontal battens perpendicular to the roof slope at spacings equal to the tile exposure, approximately 300mm (12-inches) on-center. Field verify exposure. Fasten at each vertical batten.

3.02 FRAMING INSTALLATION:

A. Saw cut all lumber accurately and fit into respective locations, true to line, plumb and level. Secure permanently in proper position with proper fastenings to render all parts rigid.

B. Pre-drill holes in both the substrate and wood for bolts true to line and 1.6 mm (1/16 inch) greater than diameter of bolts, depth to achieve minimum 75 mm (3 inch) embedment. Nailers must be rigidly secured to the substrate with appropriate fasteners spaced 600 mm (24-inches) on-center.

C. Furnish and install nails necessary to complete work. Construct framing adjoining members with appropriate connector. Secure connectors to members with appropriate size and number of fasteners.

3.02 CLEAN UP:

A. Premises shall be kept in a neat and orderly condition.

B. After installation of all rough carpentry, contractor shall remove all construction debris and equipment from job site.

COLOMBO, SRI LANKA

STANDING SEAM METAL ROOF PANELS 07410 - 1

SECTION 07410: STANDING SEAM METAL ROOF PANELS

PART ONE - GENERAL

1.01 SECTION INCLUDES:

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

B. Related components, transitions, and accessories.

1.02 RELATED SECTIONS:

A. 06120 - Roofing Rough Carpentry B. 07620 - Sheet Metal Flashing and Trim.

1.03 REFERENCES:

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

B. Federal Specifications (FS).

C. Underwriters Laboratories (UL).

D. Sheet Metal and Air Conditioning: Contractor's National Association, Inc. (SMACNA)

Architectural Sheet Metal Manual.

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

Manual.

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

1.04 SUBMITTALS:

A. Shop Drawings:

1. Submit complete shop drawings and details for review.

2. Shop drawings show methods of installation and plans of roof panels, sections and details, flashings, roof curbs, vents, interfaces with materials, and proposed identification of component parts and their finishes.

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

1.05 QUALITY ASSURANCE:

A. 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.

B. Regulatory Requirements:

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

2. Follow local, state, and federal requirements, safety standards, and codes.

3. Refer to applicable building codes for roofing system load design requirements.

When a conflict exists, the more restrictive document will govern.

COLOMBO, SRI LANKA

STANDING SEAM METAL ROOF PANELS 07410 - 2

C. Installation:

1. Install in accordance with manufacturer's current published application procedures and the general recommendations of the American Metal Roofing Association. Follow Underwriter's Laboratories requirements acceptable for use with specified products or systems.

2. All roofing shall be as described in this Section and 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.

D. Perform entire work of this Section in accordance with the best standards of practice relating to trades involved.

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.

F. Single-Source: Utilize zinc coil/sheet produced by one manufacturer. Provide roof panels, flashing, and gutter profiles fabricated from material of a single zinc manufacturer. Provide secondary materials which are acceptable to the zinc manufacturer and panel fabricator.

G. Mock-Up: Contractor to provide mock-up for zinc roof panel installation. Incorporate materials and methods of fabrication and installation identical with project requirements. Install mock-up at roof area location directed by Architect. Retain accepted mock-ups as quality standard for acceptance of completed metal roofing.

As appropriate, mock-up may be incorporated as part of final metal roofing work.

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 zinc manufacturer's instructions and…