Updated_Scope_of_Work.docx

SCOPE OF WORK

ASPHALT SHINGLE ROOF REPLACEMENT

PART 1 - GENERAL

1.1 PROJECT TITLE: Loess Bluffs NWR Quarters 1 Roof Replacement

1.2 SUMMARY

A. The Contractor shall furnish all materials, labor, equipment, and superintendence for the work described below. The work includes but is not limited to; project mobilization and demobilization, project management and oversite, construction of items described below, quality control, cleanup, and removal of all debris and waste generated during performance of the work.

Item #1: Roof Replacement: Work includes, but is not limited to the following:

1. Demolition of the Existing Asphalt Shingle Roof System: Remove the existing asphalt shingle roof system including underlayment, metal flashings, and all other miscellaneous materials to the wood decking.

2. Demolition of existing trim, gutters, and downspouts.

3. Asphalt Shingle Roof System Installation: Supply and install the following items including, but not limited to ice and water shield underlayment, roofing felt, architectural dimensional 3tab asphalt shingles, metal flashings, roof vents, and all other items required to produce a watertight roofing system.

4. Supply and install the following items including, but not limited to metal soffit, gutters and downspouts.

A. New flashing on all vent pipes, and new step flashing. New factory finished 2”x3” metal edging at gutters, new factory finished 2”x2” metal edging at rake edge, new 5” seamless gutter, new downspouts.

Several manufacturers’ products have been identified and included within the specifications. Identified products shall be used as a basis of design. Product substitutions that are equal to or better than the basis of design will be considered as outlined in the specifications.

All work items that are not specifically called out are considered incidental and no direct compensation will be provided. This work will not be measured for payment and shall be performed on a firm fixed price lump sum basis.

Item 2: Roof Decking Replacement: If,during the course of construction, damaged pieces of roof decking are identified the contractor shall perform the following:

Work includes, but is not limited to, removing and replacing damaged roof decking uncovered during construction. If a portion of a piece is damaged the full 4’x8’ sheet shall be replaced. Partial sheet replacement will not be accepted. The roof decking thickness and type shall match the existing roof decking. Approval to remove and replace damaged pieces shall be granted by the Government Contracting Officer prior to removal of the damaged piece.

If during the course of construction, it is determined that more than one piece of the roof decking is damaged and needs to be replaced the Government Contracting Officer will modify the contract accordingly.

All work items that are not specifically called out are considered incidental and no direct compensation will be provided. For Item #2 the Contractor shall provide a unit price per 4’x8’ piece of roof decking.

Measurement for payment will be made per sheet of 4’x8’ roof decking acceptably installed.

Item #3: Fascia Replacement: Before construction starts, damaged pieces of fascia are to be identified by the contractor and if damaged fascia is found the contractor shall perform the following:

Work includes, but is not limited to, removing and replacing damaged fascia. If a portion of a piece of fascia is damaged, the full piece of fascia shall be replaced. Partial replacement will not be accepted. The fascia color, thickness, and type shall match the existing fascia. Approval to remove and replace damaged pieces shall be granted by the Government Contracting Officer prior to removal of the damaged piece.

If it is determined that more than one piece of the fascia is damaged and needs to be replaced the Government Contracting Officer will modify the contract accordingly.

All work items that are not specifically called out are considered incidental and no direct compensation will be provided. For Item #3 the Contractor shall provide removal and installation, size, and a unit price per piece size of fascia.

Measurement for payment will be made per piece size of fascia acceptably installed.

1.3 LOCATION AND INSPECTION OF THE SITE

A. The work site is located at the Loess Bluffs NWR Quarters (residence). The address for the Quarters is 25564 Highway 159, Forest City, MO 64451. The address for the Refuge headquarters is 25542 Highway 159, Forest City, MO 64451. The Refuge Manager, William Kutosky, may be contacted for further information concerning the project location at the aforementioned address or by telephone at 660/442-5754, ext. 13 or cell 720/930-1375.

B. All prospective bidders, contractors, subcontractors, and related persons are encouraged to visit the site of the proposed Work and to assess the location and extent of the Work prior to submitting bids/quotes. Persons may inspect the site by contacting the Refuge Manager for an appointment.

1.4 ITEMS PROVIDED BY THE GOVERNMENT

N/A

1.5 TEMPORARY FACILITIES

A. Temporary toilet facilities and utilities shall be provided by the Contractor for the duration of the project.

B. Provide telecommunication services to field office at time of project mobilization. Services shall include, at a minimum, one cellular telephone.

1.6 SITE ACCESS OF RIGHT OF WAY

A. The construction access limits on Government property will be established by the Government and provided to the Contractor. The Contractor shall be responsible for complying with these limits and governing all work accordingly.

B. All bidders are reminded that they are responsible for contacting the local entity such as township, county, or state having jurisdiction in the project vicinity to ensure bidders are aware of any requirements of the local entity. These requirements are between the entity and the bidder. Load limits and other restrictions shall be obeyed.

C. Work scheduled on Saturdays, Sundays, Federal Holidays or other than normal working hours shall be approved in advance by the Government Contracting Officer.

1.7 SAFETY – IN ADDITION TO FAR 52.236-13 ACCIDENT PREVENTION

A. The Contractor shall fill out and submit the “Preconstruction Safety Checklist” to the Government Contracting Officer prior to beginning construction.

B. The Contractor shall designate a safety officer to ensure a safe work site. The safety officer shall perform daily work site inspections to assure compliance with all safety regulations and standards.

C. The Contractor’s Safety Plan shall be available on-site. The Contractor shall provide Safety Data Sheets (SDS) for all hazardous materials brought on-site. SDS shall be made available in a conspicuous location.

D. All equipment and work activities shall comply with OSHA Regulations and all accidents incidental to work performed under this contract shall be reported in accordance with OSHA reporting requirements. Additionally, a copy of the accident report shall be provided to the Government Contracting Officer.

E. The Contractor shall provide and install barricades, signs, or other warning devices to delineate the construction area and restrict public access to the construction areas. The Contractor shall coordinate dates and times with the Refuge manager when work will be performed on areas affecting public and staff entries and sidewalks.

F. Provide at least one non-freezing type of fire extinguisher of the appropriate class for each group of workers performing flammable procedures on the construction site.

G. Provide and maintain on the construction site a basic first aid kit for the workers to use.

H. Provide necessary Personnel Protective Equipment (PPE) as identified by SDS and OSHA regulations.

I. Provide documentation workers have been trained in the use of PPE prior to individual use.

1.8 JOBSITE ADMINISTRATION

A. Superintendence, subcontract administrations, quality control, and construction inspection is the responsibility of the Contractor.

B. The Contractor shall have responsible superintendence on-site during all project operations.

1.9 MODIFICATION/CHANGE ORDER PROCEDURES

A. In the event of the need for a contract Modification/Change Order, the Contractor will submit a quote to the Contracting Officer for proposed changes to the Contract.

B. The Contractor shall not perform work outside of the Contract without written approval from the Contracting Officer.

C. All Contract time extensions required as a result of a proposed change must be justified and supported in detail at the time of the proposal.

1.10 SUBMITTALS

A. Product Data: For each type of process and factory fabricated product. Indicate component materials and dimensions and include construction and application details.

B. Asphalt Shingle Samples: Submit manufacturers full range of samples for color and texture selection by Government.

C. Metal Flashings: Submit manufacturers full range of samples for color selection by Government.

D. Manufacturer Warranty: Provide copies of manufacturer’s warranties, filled out in Government’s name.

1.11 QUALITY ASSURANCE

A. Manufacturer Qualifications: A manufacturer specializing in the production of asphalt shingle systems that has been tested and listed by Underwriters Laboratories for Class and Rating indicated for each type of product indicated.

B. Installer Qualifications: Company specializing in the installation of asphalt shingle systems and approved by the roofing system manufacturer.

1.12 WARRANTY

A. The Government requires a 100% labor and materials warranty for a period of one full year after final acceptance. Items of Work found defective during the warranty period will be replaced at no cost to the Government.

B. Material Warranty: Provide asphalt shingle manufacturer’s material warranty agreeing to pay for repair or replacement of defective shingles as necessary to eliminate leaks. Period of warranty is 25 years from date of substantial completion.

1.13 MEANS AND METHODS

A. Means and methods used in the performance of this Contract must be in accordance with all applicable Federal Acquisition Regulations in addition to OSHA regulations, 29 Code of Federal Regulations, acceptable industry practices as recognized by societies, associations, building codes, manufacturer’s specifications, and any applicable state safety and health department.

1.14 FINAL INSPECTION

A. The Contractor shall request a final inspection at least 3 days prior to the anticipated date of completion.

B. Work will not be considered for final inspection until the Work has been completed and all debris removed from Government property to include removal of all nails from ground by means of a magnetic device.

C. The Contractor shall be at the job site during the final inspection.

Verify available warranties and warranty periods for sheet metal flashing and trim finishes. A 20-year period is available for fluoropolymer finishes and is the maximum included with manufacturers' published data; a 10-year period is usually available for siliconized polyester. Longer periods for premium finishes may be available.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Provide all roofing system components by a single manufacturer or as approved by asphalt shingle manufacturer.

B. Provide asphalt roofing system from one of the following acceptable manufacturers:

1. GAF; www.gaf.com.

2. Or an approved equal.

2.2 ASPHALT SHINGLES

A. Asphalt Shingles: Asphalt coated glass felt, mineral granule serviced, complying with ASTM D3462/D3462M.

1. Fire Resistance: Class A, conforming to ASTM E108.

2. Wind Resistance: Class F, when tested in accordance with ASTM D3161/D3161M.

3. Warranted Wind Speed: Gusts up to 90 mph.

4. Algae resistant.

5. Self-Sealing Type.

6. Style: Architectural Dimensional. 3 tab

7. Color: As selected by Government.

B. Products: Subject to compliance with requirements: provide the following:

1. GAF Timberline Timberline HDZ Laminated Shingles.

2. Or an approved equal.

2.3 ROOFING FELT UNDERLAYMENT

A. Roofing Felt Underlayment: Asphalt-saturated organic roofing felt, unperforated, complying with ASTM D226/D226M, Type II No. 30 (30lbs./square).

2.4 METAL FLASHINGS

A. Metal Flashings: Provide sheet metal eave edge, gable edge, ridge, open valley flashing, chimney flashing, dormer flashing, and other flashing as required.

1. Provide preformed flashings to greatest extent possible.

2. Form sections square and accurate to profile, in maximum possible lengths, free from distortion or defects detrimental to appearance and performance.

3. Hem exposed edges of flashing minimum 1/4”.

B. Steel Sheet Metal: Prefinished and galvanized steel sheet, 26 gage minimum thickness, G90/Z275 hot-dipped galvanized, PVC coating, color as selected by Government.

C. Aluminum Sheet Metal: Prefinished aluminum, 26 gage minimum thickness, PVC coating, color as selected by Government.

D. Sheet Metal: Galvanized Steel, 26 gage minimum thickness, PVC coated, color as selected by Government.

2.5 ACCESSORIES

A. Nails: Standard round wire shingle type, hot-dipped zinc coated steel, 10 wire gage, 3/8” head diameter, of sufficient length to penetrate 3/4” inch into roof sheathing or decking.

B. Plastic Cement: ASTM D4586/D4586M, asphalt roof cement.

C. Mineral-Surfaced Roll Roofing: Mineral-surfaced No. 90 asphalt roll roofing, complying with ASTM D249, surfaced on weather side with mineral granules to match roofing shingles, with 2” salvage edge, and bearing UL Class “C” label.

D. Roof Ridge Vents: Plastic, extruded with vent openings that do not permit direct water or weather entry; flanged to receive shingles.

E. Roof Jacks: 26 gage metal roof jacks for all pipe penetrations, color to be selected by Government.

F. Hip and Ridge Shingles: Manufacturer’s standard factory units to match shingles.

2.6 ROOF DECKING

A. Roof Decking: 4’x8’ sheet, thickness and type to match existing roof decking.

PART 3 - EXECUTION

3.1 DEMOLITION OF EXISTING ROOF SYSTEM

A. Provide Government 72 hour written notice prior to commencing roof system demolition.

B. Proceed with demolition of existing roof system only when existing and forecasted weather conditions permit Work to proceed without water entering into existing roofing system or building.

C. During demolition operations, have sufficient and suitable materials on-site to facilitate rapid installation of temporary protection in the event of unexpected rain.

D. Demolish existing roof system to roof decking.

E. All debris to be cleaned up and removed to an approved landfill.

3.2 PREPARATION OF ROOF DECKING SUBSTRATE

A. Inspect roof decking substrate after removal of existing roofing system with Government.

B. Secure all loose roof decking and fasteners.

C. If roof decking is not suitable for receiving new roof system, or if structural integrity of roof decking is suspect, immediately notify Government. Do not proceed with installation until directed.

D. Broom clean roof decking surfaces prior to installing new roof materials.

3.3 ICE AND WATER SHIELD UNDERLAMENT INSTALLATION

A. Install one layer of ice and water shield underlayment from eave edge to a minimum 4 feet up-slope beyond interior face of exterior wall.

3.4 ROOFING FELT UNDERLAYMENT

A. Install one layer of roofing felt underlayment horizontally over entire roof surface, lapping succeeding courses 2” minimum and fastening with sufficient staples to hold-in-place until asphalt shingle installation.

3.5 VALLEY FLASHING INSTALLATION

A. Install one ply, 36” minimum width, of ice and water shielding centered over valley.

B. Install one layer of sheet metal valley flashing, minimum 24” wide, centered over open valley and crimped to guide water. Fasten with nails 18” on center 1” from edges. Weather lap joints minimum 2” wide along each edge of valley with lap cement.

C. Install one ply, 36” minimum width, of ice and water shielding on both sides of sheet metal valley flashing.

3.6 METAL FLASHING AND ACCESSORIES

A. Install metal flashings in accordance with manufacturer’s directions.

B. Lap joints 2” and seal weathertight with plastic cement.

C. Secure in place with roofing nails spaced 12” on-center.

D. Items Projecting Through or Mounted on Roofing: Flash and seal weathertight with plastic cement.

3.7 ASPHALT SHINGLE INSTALLATION

A. Install starter of roll roofing along eave of roof.

B. Install asphalt shingles in accordance with manufacturer’s directions.

C. Place asphalt shingles in straight course pattern.

D. Extend asphalt shingles over valley and neatly trim from valley center line exposing 2” of metal valley flashing.

E. Install roof ridge venting in accordance with manufacturer’s directions.

F. Cap hips and ridges with manufacturer’s standard hip and ridge asphalt shingles. Place to avoid exposed nails.

G. Coordinate installation of roof mounted components or work projecting through roof with weathertight placement of counterflashing.

H. Complete installation to provide weathertight service.

I. Do not permit traffic over finished roof surface.

(END OF ASPHALT SHINGLE ROOF REPLACEMENT SCOPE OF WORK)