Statement_of_Work_29B_leopards_Hill_Road_Residence_Roof_Replacement_.pdf

U.S. DEPARTMENT OF STATE

OBO FACILITIES MANAGEMENT DIVISION

STATEMENT OF WORK

FOR

29B LEOPARDS HILL RD RESIDENCE ROOF REPLACEMENT

LUSAKA, ZAMBIA

November 2, 2017

UNITED STATES DEPARTMENT OF STATE

29B LEOPARDS HILL RD ROOF REPLACEMENT

LUSAKA, ZAMBIA

TABLE OF CONTENTS 2

PERFORMANCE SPECIFICATIONS

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

Not Used 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

Not Used Division 9

09910 – Elastomeric Coating

09920 – 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.”

LUSAKA, ZAMBIA

SUMMARY OF ROOF WORK 01020 - 1

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 29B

Leopards Road in Lusaka, Zambia. Roof areas area as follows:

1. Roof Area A: 275 SM (2,950 sf)

2. Roof Area B: 30 SM (322 sf)

3. Roof Area C: 20 SM (215 sf)

B. Provide and Install Base Roof System

1. Roof Area A: “Clip-lock” Metal Roof System

a. Removal and disposal of existing Harvey Tile roof panels and flashings to structural framing.

b. Installation of new reflective foil insulation/underlayment.

c. Installation of new metal roof panels.

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

e. Installation of new gutters and downspouts

f. Any repair and replacement of wood fascia and joists as deemed necessary during removals.

g. Installation of new Batt insulation

h. Touch up painting of exterior wood fascia and trim.

2. Roof Area B: “Clip-lock” Metal Roof System

a. Removal and disposal of existing metal roof panels and flashings to structural framing.

b. Installation of new reflective foil insulation/underlayment.

c. Installation of new metal roof panels.

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

e. Elastomeric coating with full fabric coverage at internal concrete gutter and drains.

f. Touch up painting of exterior concrete parapet.

3. Roof Area C: Two Ply Modified Bitumen Roof System

a. Removal and disposal of existing roofing membrane to the structural concrete deck.

b. Install two-ply modified bitumen roof membrane (Granulated cap sheet)

c. Install two-ply modified bitumen membrane base flashing (Granulated cap sheet)

d. Installation of new stainless steel copings.

e. Installation of new stainless steel scupper insert and collector box.

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 related materials based

LUSAKA, ZAMBIA

SUMMARY OF ROOF WORK 01020 - 2

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 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.

LUSAKA, ZAMBIA

SUMMARY OF ROOF WORK 01020 - 3

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:

Award of Contract:

Total On-Site Construction Total Period of Performance:

Rainy Season:

30 days on site 30 days November-March

A.

B.

C

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

LUSAKA, ZAMBIA

SUMMARY OF WORK 01535 - 1

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

B.

C.

policy and program management document. Submit a CAPP to ensure safety of all persons at the site in event of an emergency.

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

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:

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.

LUSAKA, ZAMBIA

SUMMARY OF WORK 01535 - 2

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.

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

LUSAKA, ZAMBIA

CONTRACT CLOSEOUT 01700 - 1

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.

CONTRACT CLOSEOUT 01700 - 2

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.

CONTRACT CLOSEOUT 01700 - 3

CONTRACTOR’S RELEASE

PROJECT____________________________________________________________________________

CONTRACT

NO._____________________________________DATED________________BY____________________

CONTRACT SUM

$_____________________________________________________________________________DOLLA

RS

CONTRACTOR

NAME_______________________________________________________________________________

ADDRESS___________________________CITY_______________STATE_______ZIP_______COUNT

RY______________

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____.

____________________________________ CONTRACTOR

Notary Public:

CONTRACT CLOSEOUT 01700 - 4

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__________________________________DOLLA

RS

CONTRACTOR

NAME_______________________________________________________________________________

ADDRESS___________________________CITY_______________STATE_______ZIP_______COUNT

RY______________

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

(Affix Seal)

TITLE

DATE

NAME & ADDRESS OF PRINCIPAL SIGNATURE

(Affix Seal)

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

CONTRACT CLOSEOUT 01700 - 5

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 EXECUTING CONSENT (SIGNATURE)

(Affix Seal)

B

C

Date

REMOVALS AND RENOVATION WORK 02072 - 1

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

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.

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, 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.

REMOVALS AND RENOVATION WORK 02072 - 2

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.

D. Asphalt Primer: Quick-drying type, ASTM D 41.

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).

G. Splash Blocks: Pre-cast concrete; minimum size of 50mm (2-inches) thick by 450mm (18 inches) by 750mm (30-inches).

H. 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 during term of Contract.

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

LUSAKA, ZAMBIA

REMOVALS AND RENOVATION WORK 02072 - 3

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.

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. Concrete Decking:

1. Perform repairs to concrete deck in accordance with patching material manufacturer's recommendations.

2. Apply rust inhibitor to exposed rebar.

3. Remove loose and defective concrete.

4. Patch spalled areas and exposed rebar areas with non-shrink grout.

5. Trowel smooth the properly placed grout.

6. Seal cracks and/or joints in concrete deck with modified bitumen membrane prior to installation of new roof materials.

7. Cover holes or openings 300mm (12-inches) in diameter or smaller with a plate of

18 gauge sheet metal. Extend plate minimum 100mm (4 inches) beyond edge of hole and onto adjacent unaffected rib. Holes or openings greater than 12-inches by 12-inches (300mm by 300mm), frame opening with 2X wood nailers with intermediate spanning members spaced 16-inches (400mm) on-center. Install plywood flush with top of deck. Provide finish on bottom side of opening to match adjacent finish in exposed areas.

D. 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.

REMOVALS AND RENOVATION WORK 02072 - 4

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.

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.

ROUGH CARPENTRY 06120 - 1

SECTION 06120 - ROUGH CARPENTRY

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

1.02 RELATED SECTIONS:

A. 02072 - Minor Demolition 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.

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/m

(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. Fascia: Match Existing.

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

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.

ROUGH CARPENTRY 06120 - 2

3.01 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.

LUSAKA, ZAMBIA

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.

C. Refer to applicable building codes for roofing system load specification 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. 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.

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

STANDING SEAM METAL ROOF PANELS 07410 - 2

F. 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.

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

H. Mock-Up: Contractor to provide mock-up for 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 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. Require all personnel to wear clean white cotton gloves when handling and installing panels and accessories when no strippable film is present.

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

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

1.08 WARRANTY:

A. Upon final acceptance for project, metal panel manufacturer to furnish a warranty covering bare metal against rupture, structural failure, and perforation due to normal atmospheric corrosion exposure for a period of twenty years.

B. Provide warranty covering panel finish against cracking, checking, blistering, peeling, flaking, chipping, chalking, and fading for a period of twenty years.

C. Provide twenty year no-dollar-limit manufacturer’s weathertightness 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.

LUSAKA, ZAMBIA

STANDING SEAM METAL ROOF PANELS 07410 - 3

2.01 METAL PANEL MANUFACTURERS:

A. Specifications based on Klip-lok 700 or approved equivalent.

2.02 PRIMARY MATERIALS:

A. Steel Underlayment:

1. Sisalation Reflective Foil Insulation by Fletcher Insulation. Or approved equivalent.

B. Roof Panels:

1. Panel Style: Klip-Lok 700 Hi-Strength

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

3. Steel Grade: G550

4. Texture: Colorbond Metallic Steel

C. 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.

D. Accessories:

1. Accessories (e.g. ventilators, skylights, gutter, fascia) shall be as standard 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 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.

E. Batt Insulation:

1. Isover Aerolite 135mm batt insulation or approved equivilant.

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

1. Roof Loading: 1,916 N/m

(40 pounds per square foot) inward; 719 N/m

(15 pounds per square foot) outward.

2. Water Penetration: No significant, uncontrolled leakage at 192 N/m

(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/m

(4 pounds per square foot) differential pressure.

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

2.03 FABRICATION:

A. Roll form panels in continuous lengths, full length of detailed runs from ridge to eave.

B. Provide continuous maximum panel length to suit project conditions to eliminate or minimize panel end lap splices.

C. Fabricate trim, flashing, and accessories to detailed profiles.

D. Fabricate trim and flashing from same material as roof panel.

PART THREE - EXECUTION

3.01 GENERAL:

A. Perform entire work of this Section in accordance with the best standards of practice relating

STANDING SEAM METAL ROOF PANELS 07410 - 4

to trades involved.

B. Follow local, state, and federal regulations, safety standards, and codes. When a conflict exists, the more restrictive document shall govern.

C. 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.

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

1. 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.

E. 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.

7. Comply with manufacturer's installation instructions and SMACNA Architectural Sheet

Metal Manual for flashings and sheet metal work.

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 cutting.

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

3.02 INSTALLATION:

A. Reflective Roof Underlayment: Lay foil facing perpendicular to the roof slope and lap edges

150mm, fasten with top edge underneath laps.

B. Roof Panels:

1. Clip Installation:

a. Secure clip into deck substrate using appropriate fastener; two per clip.

b. Space clips in accordance with manufacturer's requirements to achieve specified wind uplift resistance.

2. Panel Installation:

a. 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.

b. 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

STANDING SEAM METAL ROOF PANELS 07410 - 5

substrate surface as required.

c. Mechanically secure panels at designated anchorage points as required by manufacturer.

d. Apply sealant onto seam and form double-lock seam full length of panels. Fold over seam at designated locations to form integral connections.

3. Flashings:

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

b. Secure flashings to panels utilizing concealed clips, Z-closures, and grommetted screw fasteners.

c. Install Z-closures in continuous bead of sealant or tape sealant and secure in place.

Apply sealant between closure and standing seam and tool to provide seal.

d. Install flashings in accordance with manufacturer’s requirements to provide the weathertightness warranty.

e. Install sheet metal base flashings at round penetrations in field of panel. Secure flange of metal base to panel with pop rivets spaced 25 mm (1-inch) on-center. Fully solder sheet metal base to metal roof panels. Apply sealant along top edge of base.

Install sheet metal bonnet to penetrating element to conceal top edge of sheet metal base.

C. Soldering:

1. Prior to soldering, clean and tin the smooth hammer edge and the lateral surfaces.

2. Tin the soldering bit by heating the soldering bit to ~250 degrees Celsius (~480 degrees

Fahrenheit) and cover the tip of the bit with liquid solder.

3. Debur the edges of the overlap area of sheet metal to be soldered to create a narrow soldering gap.

4. Create an overlap of 10mm to 15mm (3/8-inch to 5/8-inch) and apply flux to the overlap.

5. Exerting pressure, place the soldering bit, full-surface, onto the overlap. Once the material has reached ~250 degrees Celsius (~480 degrees Fahrenheit), melt some solder on the tip of the bit.

6. Apply steady pressure on the overlap with the soldering bit and the solder bar, and guide the bit slowly along the soldered joint. Use auxiliary tools to apply pressure to the overlap (e.g. piece of wood) for areas that are difficult to access.

7. The overlap area must be completely filled with solder and must have bonded! At no point, can the gap be greater than 0.5 mm (0.020-inch). In the event of a defective soldered joint, it must be reopened and soldering process repeated.

8. To solder vertical joints, exert steady pressure with the soldering bit, solder the vertical up-weld from top to bottom. If necessary, fasten the joint beforehand in small increments using spot soldering (tacking).

9. Begin soldering gutter joints at the gutter bead and exert pressure while slowly drawing the soldering bit over the joint.

10. Clean the soldered joint using a damp cloth to remove corrosive flux residue and carbon.

11. Provide 300 mm (12-inch) long sample of soldered lap joint and cut sample in half to reveal interior of soldered joint to confirm depth and continuity of solder.

3.03 INSTALLATION TOLERANCE:

A. Shim and align units within installed tolerance of 6 mm (1/4-inch) in 6 m (20 feet) on level/plumb/slope and location/line, and within 3 mm (1/8-inch) offset of adjoining faces and of alignment of matching profiles.

3.04 SEAMING:

STANDING SEAM METAL ROOF PANELS 07410 - 6

A. Complete seaming of panel joints by operation of portable power driven or hand-held equipment of type recommended by manufacturer.

3.05 JOINT SEALERS:

A. Install gaskets, joint fillers, and sealants where required for weatherproof performance of panel systems. Provide types of gaskets and sealants/fillers recommended by manufacturer.

3.06 EXPANSION/CONTRACTION:

A. Roof shall provide thermal expansion/contraction without detrimental effect on the roof panel when there is a +/- 100 degree temperature difference between the inside structural framework of the building and the temperature of the roof panels, thus allowing a full 62.5 mm (2-1/2-inches) of roof movement.

B. All end wall trim and roof transition flashing shall allow the roof panel to move relative to the wall panels as the roof expands and contracts with temperature change.

3.07 CLEANING AND PROTECTION:

A. Remove temporary protective coverings and strippable films (if any) as each panel is installed. Upon completion of panel installation, clean finish surfaces as recommended by manufacturer. Maintain in a clean condition throughout construction.

B. Touch up minor scratches and abrasions.

C. Replace all damaged panels and other components of the work which have been damaged or have deteriorated beyond successful repair by means of finish, touch up, or similar minor repair procedures.

END OF SECTION 07410

PROTECTED MEMBRANE ROOFING 07525 - 1

SECTION 07525 – MODIFIED BITUMEN MEMBRANE ROOFING

PART 1 - GENERAL

1.1 SECTION INCLUDES:

A. Installation of new two-ply APP modified bitumen roof system and related flashings in a over concrete deck.

1.2 RELATED SECTIONS:

A. 07600 - Sheet Metal Flashing and Trim for Roofing.

1.3 REFERENCES:

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

1.4 SUBMITTALS:

A. Product Data: For each type of product indicated.

B. Shop Drawings: Plans, elevations, sections, details, and attachments to other Work.

1. Base flashings, cants, and membrane terminations.

C. Samples:

1. Smooth membrane sheet.

2. Mineral-granule-surfaced membrane sheet.

E. Manufacturer Certificates: Signed by roofing manufacturer certifying that roofing system complies with requirements specified.

F. Warranties I. Obtain written approval from the manufacturer for any materials not manufactured or provided by manufacturer stating that materials are acceptable and are compatible with other materials and systems required.

1.5 QUALITY ASSURANCE:

A. Application:

1. Approved by manufacturer of accepted roofing system.

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

B. Regulatory Requirements:

1. Federal regulations, safety standards, and codes…