A04_Updated_VICK_316627A_SOW_CokerHouseRoof_0001.pdf

VICKSBURG NATIONAL MILITARY PARK

VICKSBURG, MISSISSIPPI

STATEMENT OF WORK:

REPLACE COKER HOUSE CEDAR SHINGLE ROOF

DATED:

November 21, 2022

DEPARTMENT OF THE INTERIOR

NATIONAL PARK SERVICE

SOUTHEAST REGION

Statement of Work (SOW):

The Coker House, a historic building in Vicksburg National Military Park, has a hip roof clad with wood shingles. The front porch projects from the face of the building and is also covered by a hip roof clad with wood shingles. Metal valley flashing is located where the porch roof meets the main roof. A metal drip edge spans the perimeter of the roof, but there are no gutters or downspouts currently installed. The current roof was installed circa 2007 and is in poor condition with a major leak in one of the front parlors.

Contractor shall furnish all supervision, labor, equipment, tools, fuel, transportation, materials, fall protection measures (See Safety Section #5 below), and oversight necessary for replacing the Coker House circa 2007 wood shingle roof and/or roof accessories. Contractor shall utilize this SOW with the SOW specifications, pre-bid site observation, field measurements, and approved materials to implement the SOW requirements as stated herein. Use form CM-16 for all submission, highlighted yellow to easily locate, as noted herein before acquiring products or implementing work.

Contractor shall coordinate work so visitation and park programs are not disrupted.

GENERAL

• Demo existing wood shingle roof and salvage flashing, field verify, for reinstallation.

o Existing flashing damaged during work activity shall be replaced. Caulk/sealant being applied will not be accepted by the COR.

o Remove and replace all ice and water shield at ridge, eaves, valleys, and roof penetrations.

o Roof has spaced sheathing boards which shall remain as installed and only deteriorated boards shall be address as stated herein in Section Wood Treatment.

• Correct flashing deficiencies and install new flashing to meet current roofing standards.

• Procure and install wood shingles as specified to match the existing roof. New material shall be ordered and stored on site prior to the removal of the existing roofing materials. Note: Failure to order the grade specified shall result in an automatic rejection which the contractor shall remedy by ordering the correct material to be accepted by the NPS.

• Install L-type, lead-coated copper, drip edge at rakes and eaves.

• General cleanup inside the facility shall be required following the roof installation along with site cleanup and restoration.

o Attic shall be thoroughly cleaned.

o Site shall be restored to pre-construction appearance and condition to satisfaction of the NPS.

BACKGROUND INFO – FIELD VERIFY

The contractor shall be responsible for field verifying the quantities required to complete the work and the info provided can’t be verified by the NPS since there is a discrepancy in the info provided. It is strongly encouraged that the contractor visit the project site to verify info.

The Coker House roof is estimated to be between 3360 to 3400 sqft.

Contractor shall FIELD VERIFY:

• Main Roof 2790 sqft (estimated)

• Front Porch 570 sqft (estimated)

Note: Shingles at hip and ridge cap shingles should be of uniform size.

NOTES FOR SHINGLE PRODUCT IDENTIFICATION:

Per 95% Draft HSR, verified with historical architect.

Main roof area 6:12 Pitch hip roof= 2,790 sqft

Porch roof area 6:12 Pitch = 570 sqft --slope of roof is approximately 10'-0" +/- by length of 57'-0" +/- = 10 x 57 = 570

Roof shingle specification and detail:

• #1 Alaskan Yellow Cedar, taper sawn wood shingles, 18" long, 3" to 10" wide, with butt thickness of 5/8” or 3/4".

• All material shall be Certified by the Cedar Shake and Shingle Bureau and meet CSSB- 97 grading standards.

• Underlayment: Benjamin Obdyke Cedar Breather or equal per manufacturer installation procedure, on top of felt covering if required by standard specifications.

• Fasteners: 4D 1 ½” 316 Stainless Steel nails or equal to prevent staining due to treatment

• Treatment: CCA treatment

• Other Materials needed: 18” shingle hip and ridge or 24”x5/8” hip and ridge. Also, #2 shingles to match for use as a starter course.

• Shingles at roof over rear porch shall be 18" long.

• Shingles at hip and ridge cap shingles shall be of uniform size.

WOOD TREATMENT:

• Assume 2% for cost estimating of wood that may require repairs (epoxy, dutchmen, etc.) or replacement in-kind.

• Material requiring removal for flashing removal/reinstallation shall be carefully removed and reinstalled. Damage cause by work negligence shall be the responsibility and expense of the contractor.

PAINT:

• If it is determined by the contractor in coordination with the NPS, that wood siding or trim boards require replacement then the contractor shall:

o Prime all sides after final placement cuts are made – all surfaces to be coated before installed.

o Apply one coat of paint on all sides before nailing to structure.

o Apply final paint coat after installation of material.

o All primer and paint shall be Sherwin Williams’s product with paint being exterior

Duration as made by the manufacture.

DISPOSAL OF MATERIALS:

o All materials eligible for recycle will be collected and disposed of properly at a recycling center according to applicable regulations and a quantity of materials sheet shall be submitted to the COR at the end of the project detailing the amount of material that was recycled from the site.

o All materials that are not recyclable and are deemed unfit for reuse will be disposed of in the proper manner according to all applicable regulations and a quantity of materials sheet shall be submitted to the COR at the end of the project detailing the amount of material disposed of.

GOVERNMENT FURNISHED:

The government will furnish the following documents to the contractor for executing the requirements of the project:

• Preservation brief # 19 – The Repair and Replacement of Historic Wooden Shingle Roofs o https://www.nps.gov/tps/how-to-preserve/briefs/19-wooden-shingle-roofs.htm

• NRCA typical details related to installation type for this roof.

• Form CM-16

• NO MATERIALS

https://www.nps.gov/tps/how-to-preserve/briefs/19-wooden-shingle-roofs.htm

EQUIPMENT LIST:

Contractor shall submit a list of equipment (motorized), hand tools, and fleet that will be used on the job prior to a notice to proceed (NTP). If any item requires fueling the Contractor must use Department of Transportation (DOT) approved gas cans (metal) to transport fuel in/out of the park and list on the equipment list.

Equipment list should list the model/make, condition (good, fair, or poor), and quantities for each.

SAFETY:

Safety requirements and requested information approval must be met prior to a NTP being issued to the contractor. Use the CM-16 form for all submissions.

1. Provide a safe and healthful workplace for all contractor’s employees, NPS staff, and visitors while on NPS site.

2. Provide a level of public safety commensurate with exposure at NPS worksite.

3. Comply in rectifying all unsafe or unhealthful conditions called to his attention by the contracting officer, contracting officer representative (COR), safety officer, or deputy facility Manager.

4. Allow for informal and formal, announced, and unannounced safety inspections by the COR and the appropriate safety officer at the worksite.

5. Submit an acceptable documented project specific safety plan (SSP) prior to a notice to proceed. Include a cool down period of 15 minutes after shutting off equipment before refueling. Include and employ OSHA standards 29 CFR 1910 Subpart D (Walking Working Surfaces), Subpart F (Powered Platforms, Man Lifts, and Vehicle Mounted Work Platforms), and Subpart M (Fall Protection).

6. Designated in writing a company safety officer/coordinator that will be on site for the duration of the projects with the responsibility and authority for ensuring safe work practices are being carried out per the approved SSP. Use CM-16 for submittal.

7. Provide and maintain a fully charged 5lb or 10lb Class A, B, C fire extinguisher to be mounted and visible on the jobsite. Mount of freestanding stand where required posters are to be mounted. Use CM-16 for submittal for stand.

8. Provide first aid procedures and mount a first aid kit to remain on the jobsite. Mount to freestanding stand. Use CM-16 for submittal for stand.

9. Follow EM-385-1-1 site/project specific safety guidance directive - available online or from authored agency (USACE).

10. Conduct weekly site-specific safety training to employees. Submit safety training sign-in sheets to the COR each week – include topic with site attendees printed name and signature on the sign-in sheet.

*Endangered Species Act: requires that no work will be performed on this site from June 1 to July 31 to ensure the protection of an endangered bat species that could possibly be roosting in the shingles at that time of year.

PLACE OF PERFORMANCE:

The project site is located at the Coker House within the Champion Hill unit of Vicksburg National Military Park, located at the intersection of Hwy 467 and Adams Lane, southeast of Edwards, MS.

Permitted Work Hours: Monday through Friday, 8:30am – 4:30pm.

Working after hours or weekends shall not be approved to accomplish the work unless prolong delays due to weather only. No work activity on before days will be considered when requests are made to work outside the allowed days and time indicated. Note: There is not lighting after work hours.

Permitted Access: Call the COR in advance to schedule access to these sites. Park must be notified each day work occurs and when requesting to work after hours or on weekends.

LOCATION MAP FOR COKER HOUSE

2695 ADAMS LN, EDWARDS, MS 39066

COKER HOUSE FRONT ELEVATION

COKER HOUSE REAR ELEVATION

COKER HOUSE RIDGE

Place of Performance: