Attachment01_Specifications.pdf

Div. 1 V. 2021-10-18 Page | 1

GEORGE WASHINGTON CARVER NATIONAL

MONUMENT

DIAMOND, MO

REPLACE CARVER HOUSE ROOF

PMIS 322595

PROJECT SPECIFICATIONS

NATIONAL PARK SERVICE

3/02/2022

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TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

Section 01 10 00 - Division 01 Short Form General Requirements

DIVISION 07 – THERMAL AND MOISTURE PROTECTION

Section 07 31 29 – Wood Shingles

MAPS

MAP 1 Park Location Map MAP 2 Park Map MAP 3 Project Location Map

PHOTOGRAPHS

Figure 1 Roof (east side) Figure 2 Roof (south side) Figure 3 Roof (west side) Figure 4 Roof (north side) Figure 5 Rear porch roof (overhang and decking) Figure 6 Rear porch roof (overhang) Figure 7 Rear porch roof (metal roofing) Figure 8 Chimney (rear) Figure 9 Chimney (front) Figure 10 Valley flashing (south) Figure 11 Valley flashing (north) Figure 12 Split-rail fence enclosure Figure 13 Staging Area

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SECTION 01 10 00

DIVISION 1 SHORT FORM GENERAL REQUIREMENTS

PART 1 – GENERAL

ITEM 1 - DESCRIPTION OF WORK

1.1 Background:

The Moses Carver house is a small two-story three-room wood frame structure constructed in 1881. It is a registered structure on the National Register of Historic Places. The main floor consists of a living room with front porch and kitchen with a side porch. The second story is a bedroom. The house is an “L” shape in plan, but the porch on the side and the covered porch in the front make the overall plan of the building a 37’4” by 20’ 1½” rectangle.

The main roof structure is a wood-shingled cross-gable design that extends over the open front porch. It consists of approximately 840 sf of 18” long fire-resistant red cedar shingles with five-inch exposure (all measurements are approximate and must be field verified by contractor). Underlayment is 1”x4” pine skip-sheathing and valley flashing is galvanized steel. Shingles were last replaced in 2005.

The 84 sf low sloping rear porch roof differs in construction than the rest of the roof structure (all measurements are approximate and must be field verified by contractor). It was reconstructed in 1979 using a soldered flat seam lead coated copper pan over construction grade plywood. Due to issues with the 1979 construction that led to deterioration of the underlying plywood sheathing, the metal roof and underlying sheathing were replaced again in 1990.

The Moses Carver house site topography is relatively flat with a slight slope toward a stream approximately 40 feet south of the structure. The house is accessible by motor vehicle. The Moses Carver house site does not have access to rest-room facilities, power, water, or sewage utilities. Power generators may be used but must be supplied by the contractor. If a portable toilet is necessary, the contractor must provide.

1.2 Work Covered by the Contract Documents:

A. Project Location: George Washington Carver National Monument, 5646 Carver Road, Diamond, MO 64840 (See Project Location Map).

B. Work consists of:

a. Installing a new cedar shingle roof on Carver House including but not limited to:

i. Removal and disposal of existing cedar shingles and miscellaneous flashing.

ii. Temporary removal, salvage and reinstallation of existing lightning protection system.

iii. Selective replacement of deteriorated board roof sheathing.

iv. Installation of cedar shingles and galvanized metal flashing.

b. Installing a new lead-coated copper roof on the Moses Carver House rear-porch roof including but not limited to:

i. Removal and disposal of existing lead coated copper roofing, and flashing.

ii. Replacement of existing decking material with 1” x 6” (minimum width) solid wood decking boards.

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iii. Ensure that new decking boards on the roof eave to extend further than the existing decking to create an overhang approximately two inches wider than current.

iv. Installation of flashing and lead-coated copper roofing.

c. REPLACEMENT OF ROOFING MATERIALS:

i. Cedar Shingle Roof. All materials will be of the highest quality and installed to meet professional roofing standards according to the Cedar Shake and Shingle Bureau. Materials required include:

1. Shingles: Fire Retardant Treated Cedar Shingles, 18 inches in length.

Type: Class B pressure treated and fire-retardant shingles, Number 1 grade, meeting UL Class B, meeting ASTM E-108, UIL-790, NFPA-256, UBC Standard 15-2. Select shingle with 30 year or greater warranty.

a. Note: All of the materials will be provided by the contractor.

2. Board Sheathing: Nominal 1-inch, S4S, 19-percent maximum moisture content, southern yellow pine or equivalent, grade: C&BTR. Which has been surfaced or sanded on 4 sides. Sheathing on cedar shingle roof will be "replace in kind" as needed.

3. Nails: #3d hot-dipped zinc coated box for shingles with a minimum length of 1-3/4”. For copper flashing installation, nails should be flathead, barbed, wire slating nails, at least 1" long, of not less than 12-gauge hard copper, brass, or bronze.

4. Metal Flashing: 20 oz lead-coated copper (valley, wall, step, and chimney).

ii. Lead-Coated Copper Roofing.

1. Copper sheets: 20 oz. rectangular cold rolled copper sheets, 18” x 24” or smaller (contractor to determine actual sheet sized based on roof dimensions to minimize waste).

2. Underlayment: 4 lb. minimum, rosin-sized smooth building paper over 30 lb., minimum, saturated roofing felt.

3. Cleats: 16 oz. or 20 oz. copper at least 2” wide.

4. Nails: For copper roofing and flashing installation, nails should be flathead, barbed, wire slating nails, at least 1" long, of not less than 12-gauge hard copper, brass, or bronze. For sheathing, #8d hot-dipped zinc coated box with a minimum length of 2-1/2”.

5. Solder: 60-40 lead tin solder.

6. Board Sheathing: Nominal 1-inch, S4S, 19-percent maximum moisture content, southern yellow pine or equivalent, grade: C&BTR. Which has been surfaced or sanded on 4 sides.

7. Metal Flashing: 20 oz lead-coated copper

d. INSTALLATION:

i. Cedar Shingle Roof:

1. General Cedar Shingle Application: Shingle starter course will be 3 layers with a 1-1/2" overhang (beyond the fascia). All other shingles will have 4½ to 5 1/4" exposure. Each row must be measured and matched to existing exposure. Nails will be pulled and not driven in when old roof

Page | 5 is removed. Each shingle will be hand nailed with two nails ¾” to 1” from the edge and 1-1/2” to 2” above the butt line of the next course. Space shingles 1/4" to 3/8" apart. Joints in any one course should be separated not less than 1-1/2” from joints in adjacent courses; and in any three courses, no two joints should be in direct alignment. Flat grain shingles wider than 8” should be split in two before nailing. Knots and similar defects should be treated as the edge of a shingle and the joint in the course above placed 1-1/2” from the edge of the defect. Retain widest shingles for use in valleys. Project shingles 1 1/4" or 1 1/2" (to match) at roof edge.

2. Chimney/Counter Flashing: Must be set between the brick at a depth of one and a half inches. The brick above and below the chimney flashing may need to be replaced during flashing replacement.

3. Valley Flashing: Must extend not less than 12” on each side from center of valley. No nailing within 6" of center and allowing 6" minimum of overlap.

4. Mortar Mix Replacement: All mix must match existing mortar. Samples of mortar will be provided prior to use and approved by Contracting Officer’s Representative (COR).

5. Base Flashing: Must extend 5" onto the roof and minimum of two and a half inches vertical. Overall length of base-step flashing will be 12".

6. Roof Caps: Require 5" exposure, hand nailed using #6 hot-dipped zinc coated nails.

ii. Lead-Coated Copper Roofing:

1. Board Sheathing: Boards are attached with 2 nails at each rafter. Boards should extend beyond facia on both rake edge and eave to create roof overhang.

2. Lead Coated Copper Installation: The deck should be thoroughly dry, smooth, and free from projecting screws, nail heads or other imperfections. The entire surface should be covered with an approved underlayment secured with copper nails and washers. A sheet of building paper must be applied over the underlayment. Copper pans are formed by folding two adjacent sides of the sheets over and two folded under to form 3/4" locks. Copper cleats of 16 or 20 oz. cold rolled copper are installed in each of the longitudinal and transverse seams. The end of each cleat should be folded back over the nail heads to prevent possible damage to the covering sheet by expansion and contraction, traffic or other forces. The finished pans are interlocked longitudinally and transversely, with staggered transverse seams. The edges of the sheets should be cleaned, wire brushed, fluxed and pre-tinned to a width of 1- 1/2" before folding. Copper sheeting should be completely carried over the edge and past the bottom of the sheathing boards and secured with continuous cleats. After locked seams are engaged, they should be malleted or dressed down and thoroughly sweated full with solder.

3. Base Flashing: Must extend 5" onto the roof and minimum of two and a half inches vertical.

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e. All repairs of historic fabric must be ‘in-kind’ repairs using approved materials and methods. All new boards must be stamped on the underside with the date of installation.

i. Historic fabric that is removed and replaced shall be saved and provided to the park.

f. Except as indicated above, all work areas must be cleaned, and debris removed from the site by the contractor.

C. All work will be performed under a single contract.

D. Period of performance: Work shall be completed within 60 calendar days of the start date provided on the Notice to Proceed. The period of performance is inclusive of 5 weather days.

ITEM 2 - EXISTING UTILITIES

2.1 Existing Utilities: Notify Contracting Officer (CO), Contracting Officer’s Representative (COR) and utility companies to coordinate proposed locations, times for excavation and request location services prior to any digging operation.

2.2 Contractor shall be responsible for locating and preventing damage to known utilities. If contractor damage occurs, alert CO and COR as soon as safely possible, and repair utility at no additional expense to the Government. If damage occurs to an unknown utility, contact CO and COR as soon as safely possible.

2.3 Existing Utility Interruptions: Do not interrupt utilities serving facilities occupied by Government or others unless permitted under the following conditions and then only after arranging to provide temporary utility services according to requirements indicated below:

2.3.1 Notify CO and COR not less than two business days in advance of proposed utility interruptions.

ITEM 3 - CONTRACTOR’S USE OF PREMISES

3.1 Conduct of Operations: At all times the contractor shall conduct his operations in conformance with the rules and regulations promulgated by the Secretary of the Interior for the National Park Service, and applicable park rules and regulations prescribed by the Park Superintendent. Superintendent's Compendium - George Washington Carver National Monument (U.S. National Park Service) (nps.gov)

A. No signs or advertisements (except those specified herein and as required for safety) shall be displayed on the construction site or within the park unless approved by the Contracting Officer.

B. Smoking is not permitted within any Federal building or within 25 feet of entrances, operable windows, or outdoor air intakes.

C. Public Use of Site: Contractor shall at all times conduct operations to ensure the least inconvenience to the public. The grounds adjacent to the house constitute a section of the Carver Trail. Contractor shall make every effort not to obstruct public access to those areas as much as possible.

3.2 On-site work hours: Work shall be generally performed during normal business working hours of 7 a.m. to 5 p.m., Monday through Friday, except when otherwise indicated.

https://www.nps.gov/gwca/learn/management/superintendent-s-compendium.htm

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A. Work on Saturdays, Sundays, Federal holidays, early morning, or at night may not be performed without prior consent from the CO and COR. Submit requests for work outside of the stated normal business hours to the CO and COR for approval at least 48 hours in advance of the work.

The following Federal holidays are observed by the National Park Service:

New Year Day Martin Luther King, Jr’s Birthday Washington’s Birthday Memorial Day Juneteenth National Independence Day Independence Day Labor Day Columbus Day Veterans Day Thanksgiving Day Christmas Day

B. Note: Any of the above holidays falling on a Saturday will be observed on the preceding Friday;

holidays falling on Sunday will be observed on the following Monday. The specific day that each holiday is recognized for each year can be found at the following site: Federal Holidays (opm.gov).

3.3 Contractor Use of Site:

A. General: Contractor shall have limited use of the site for construction operations. Limit use of premises to construction area as shown on Project Area map. Do not disturb portions of Project site beyond areas in which the Work is indicated.

B. Limits: Work operations shall be limited to within 30 ft of the structure (within the split-rail fenced enclosure surrounding the building, see Project Area map), scaffolding, equipment, etc. should be confined within this area. The staging area is east of the Carver House fenced enclosure adjacent to the access route (see Project Area map).

C. Driveways and Entrances: Keep driveways, access roads, and entrances serving premises clear and available to Government, Government's employees, and emergency vehicles at all times. Do not use these areas for parking or storage of materials. Schedule deliveries to minimize use of driveways and entrances.

D. Limit site disturbance, including earthwork and clearing of vegetation: N/A

E. Utilities

a. General: Cost or use charges for temporary facilities shall be included in the Contract

Sum as required.

b. Water Service: Water utilities not available at the work site.

c. Electric Power Service: Electric utilities not available at the work site.

d. Toilets: Contractor provided for contracting personnel, shall be sufficiently lighted and ventilated toilet facilities in weatherproof, sight proof, handicap accessible (if required), sturdy enclosures with privacy locks. Coordinate with COR for approved location if not shown on attached site plan.

F. Security and Protection facilities:

https://www.opm.gov/policy-data-oversight/pay-leave/federal-holidays/#url=2022 https://www.opm.gov/policy-data-oversight/pay-leave/federal-holidays/#url=2022

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1. Environmental Protection: Provide protection, operate temporary facilities, and conduct construction in ways and by methods that comply with state and federal environmental regulations and that minimize possible air, waterway, and subsoil contamination or pollution or other undesirable effects.

2. Cleaning of Equipment: The Contractor shall ensure that prior to moving on to the Project Area, all equipment, is free of soil, seeds, vegetative matter, or other debris that could contain or hold seeds. Ensure that all equipment has been pressure washed and is free of exotic species prior to start-up of operations and moving of equipment to Project Area.

Equipment shall be considered free of soil, seeds, and other debris when a visual inspection does not disclose such material. Disassembly of equipment components or specialized inspection tools are not required.

3. Tree and Plant Protection: Provide Tree Protection fence at drip line of trees impacted in construction area. Coordinate with COR.

a. Restore damaged areas to original condition, repairing or replacing damaged trees and plants, at no additional expense to the Government.

b. Provide temporary barriers to protect existing trees and plants and root zones.

c. Do not remove, injure, or destroy trees or other plants without prior approval.

Consult with Contracting Officer Representative and remove agreed-on roots and branches that interfere with construction.

d. Do not fasten ropes, cables, or guys to trees.

4. Pest Control: Follow best practices to minimize attraction and harboring of rodents, roaches, and other pests and to perform extermination and control procedures at regular intervals so Project will be free of pests and their residues at project completion. Perform control operations lawfully, using environmentally safe materials.

5. Site Enclosure Fence: N/A

6. Security Enclosure and Lockup: N/A

7. Temporary Enclosures: A temporary enclosure such as snow fence should be installed around the entire work site to prevent visitors from entering the site and ensuring visitor safety during construction.

3.4 Storage - Staging Areas:

A. Confine Storage of materials and equipment to the project staging area noted on the plans/aerial. No cost specific storage and staging area’s may be discussed at the preconstruction briefing. See Project Area map for staging area. Additional onsite outdoor storage of equipment or materials may be coordinated with the Contracting Officer’s Representative and subject to Contracting Officer’s approval. Schedule deliveries to minimize space and time requirements for storage of materials and equipment on-site.

3.5 Preservation of Natural Features: N/A

3.6 Hauling Restrictions: Contractor to verify path to site and meet state and county road requirements and height restrictions for all park work/access.

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3.7 Housekeeping:

A. Keep project neat, orderly, and in a safe condition at all times.

a. Dispose of waste materials and recycling legally outside the park. The contractor shall not use park dumpsters

b. Address Recycling: Government goal is to salvage and recycle as much nonhazardous construction waste as possible. Use sustainable methods to extent possible during this project, recycling material as is probable with local means. Maintain accurate documentary records for submittal of all recycled materials used including fly ash and slag cement.

3.8 Occupancy Requirements for Buildings:

A. Existing Buildings: N/A

B. New Buildings/Existing Buildings Unoccupied: N/A

3.9 Photo Documentation:

Contractor must provide existing condition, progress and completion photos. All photos shall be in focus, show maximum range of depth of field general photo and then close up detail photo as needed. Shall be in JPEG digital form and submitted electronically by email or via CD-R Archival Gold or DVD-R Archival Gold media with printed labels and 8 mega pixels minimum within 7 days from time of taken or as approved by COR.

A. Existing Condition Images:

Before starting construction, take color, dated, digital images of project site and adjacent property/roads/etc. that may be impacted by construction activity/traffic. Include existing items to remain or be salvaged from different vantage points and with context for location identification.

B. Construction Progress Images:

1. Document all sub-surface work/ trenches etc. prior to backfill with photos covering enough overall field view to show location and then zoom in for details. (Locations and dimensions shall also be noted on as built drawing set.)

2. Maintain organized index for photos with date, description, etc.

3. Additional images as needed when questions or emergency situations occur. Submit within 24 hours.

C. Completion Images:

1. Document all completed work within scope of work.

2. Maintain organized index for photos with date, description, etc.

3. Additional images as needed when questions or emergency situations occur. Submit within 24 hours.

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3.10 Fire and Life Safety:

As a minimum, conduct one weekly 15 minute "toolbox" safety meetings. These meetings shall be conducted by a foreman or supervisor and attended by all construction personnel at the worksite. Topics need to coincide with work scheduled for the following week. Document and submit meeting minutes to the CO and COR within one day after the meeting and document the meetings on the daily reports.

A. Comply with the requirements of NFPA 241 (Standard for Safeguarding Construction, Alteration, and Demolition Operations). Take all necessary precautions to prevent fire during construction. Provide adequate ventilation during use of volatile or noxious substances.

B. Store and handle hazardous materials in accordance with manufacturer’s and OSHA 29CFR1926 Subpart D requirements 1926 | Occupational Safety and Health Administration (osha.gov). Maintain readily available, on site, MSDS/Safety Data Sheets (SDS) for each chemical.

i. Immediately report all spills of hazardous materials to the CO, COR and park.

ii. Maintain a spill emergency response kit.

iii. Train employees how to respond to a spill and use the emergency response kit.

3.11 Noise and Acoustics Management

A. Noise Control: N/A

B. Repetitive and/or intermittent, high-level noise: Permitted only during Daytime.

1. Do not exceed the following dB(A) limitations at 50 feet:

Sound Level in dB(A) Time Duration of Impact Noise 70 More than 12 minutes in any hour 80 More than 3 minutes in any hour

2. Maximum permissible construction equipment noise levels at 50 feet:

EARTHMOVING dB(A) MATERIALS HANDLING dB(A) Compressors 75 Pneumatic Tools 80 Pumps 75 Saws 75 Generators 75 Vibrators 75

C. Ambient Noise:

1. Maximum noise levels (dB) for receiving noise area at property line shall be as follows:

a. Residential receiving area :

Daytime: 65 dB Nighttime: 45 dB

b. Commercial/Industrial receiving area:

Daytime: 67 dB Nighttime: 65 dB

ITEM 4 - COMMENCEMENT, PROSECUTION, AND COMPLETION

4.1 The Contractor shall commence work in accordance with the terms and conditions of the contract.

Contractor shall coordinate and incorporate long lead and delivery time items within the schedule.

https://www.osha.gov/laws-regs/regulations/standardnumber/1926 https://www.osha.gov/laws-regs/regulations/standardnumber/1926

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ITEM 5 - EXAMINATION OF THE SITE

5.1 All bidders are urged to visit the job site and examine existing conditions before submitting bids.

Contractors will be accountable for understanding existing conditions. No cost changes for items viewable during site visit will be allowed. All quantities and dimensions are estimated, and the winning bidder will be required to complete the entire project if this information is not completely accurate.

ITEM 6 - ABBREVIATIONS

6.1 The list of abbreviations, standards and organizations which may be used in/referred within the Construction Specifications or Special Provisions, may be found linked from the listed page below. On the home page, follow the link under “Contracting and Procurement” labeled “NPS Reference Standards.”

https://www.nps.gov/orgs/1671/do-business-with-us.htm

ITEM 7 - ACCIDENT PREVENTION

7.1 Description: The work of this section consists of establishing and implementing an effective accident prevention program (APP) and providing a safe environment for all personnel and visitors.

7.2 Submittals:

A. Accident Prevention (Safety) Plan (APP): Submit a site-specific accident prevention (safety) plan. The Plan shall be written to comply with OSHA and project requirements (a generic plan is not acceptable) including but not limited to the following:

1. Name and qualifications of responsible supervisor to carry out the program.

2. First aid and rescue procedures.

3. Training, both initial and continuing.

4. Outline of each phase of the work, the hazards associated with each major phase, and the methods proposed to provide for property protection and safety of the public, National Park Service personnel, and Contractor's employees. Identify the work included under each phase, with a Job Hazard Analysis (JHA)/Job Safety Analysis (JSA), etc. A sample JHA template may be provided upon request.

5. Planning for possible emergency situations, such as cave-ins, earthquake, explosions, fires, floods, power outages, slides, and wind storms. Such planning shall take into consideration the nature of construction, site conditions, and degree of exposure of persons and property.

6. Contractor to identify nearest location of medical facility for emergencies

7. Recognition that work will be performed in remote areas with limited communication or cell phone coverage if applicable.

8. Supplemental hazard specific plans may be required IAW 29 CFR 1926 or 1910.

B. Meeting and Inspection Reports: Safety Meetings: As a minimum, conduct 15 minute

"toolbox" safety meetings. These meetings shall be conducted by a foreman and attended by all construction personnel at the worksite. Submit a report of safety meetings and inspections to CO and COR within one day after the meeting and document the meetings on the daily reports.

https://www.nps.gov/orgs/1671/do-business-with-us.htm

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7.3 Qualification of Employees:

A. Ensure that employees are physically qualified to perform their assigned duties in a safe manner to include operators of vehicles and equipment. Provide operating instructions for all equipment.

B. Do not allow employees to work whose ability or alertness is impaired because of drugs, fatigue, illness, intoxication, or other conditions that may expose themselves or others to injury.

7.4 Accident Reporting: The Contractor shall report all accidents to the CO and COR as soon as safely possible and assist the CO and COR and other officials as required in the investigation of the accident.

7.5 First Aid Facilities: Provide access to facilities for the number of employees and appropriate to the hazards associated with the types of ongoing construction work at the site.

7.6 Emergency Instructions: Post telephone numbers and reporting instructions for ambulance, physician, hospital, fire department, and police in conspicuous locations at the work site.

7.7 Personal Protective Equipment (PPE): It is the Contractor's responsibility to require all those working on or visiting the site to wear necessary protective equipment at all times.

A. PPE must meet requirements of applicable ANSI standards. Selection shall conform to OSHA 29CFR 1926 Subpart E.

B. A hard hat use area shall be designated by the Contractor. The hard hat area shall be posted by the Contractor in a manner satisfactory to the Contracting Officer.

C. All PPE will be serviceable at all times. At a minimum, maintain four sets of PPE including hard hats and all other Accident Prevention Plan required equipment.

7.8 Hazardous Materials: It shall be the responsibility of all operators and contractors, functioning within the park to properly cleanup, mitigate and remediate if necessary, all unauthorized discharges of hazardous materials or non-hazardous chemical and biological products released from fleet and/or other support vehicles or stationary sources. Response shall be consistent with guidelines established by federal, state and local regulations, and as outlined within the operator's Safety or Hazardous Materials Business Plan.

A. If a spill, leak or other release occurs, the operator shall as soon as possible, without impeding cleanup, notify the National Park Service Emergency Dispatch.

ITEM 8 - PRECONSTRUCTION CONFERENCE: If the Contracting Officer decides to conduct a preconstruction conference, the successful offeror will be notified and will be required to attend. The Contracting Officer’s notification will include specific details regarding the date, time, and location of the conference, any need for attendance by subcontractors, and information regarding the items to be discussed. See Item 9.1C below.

ITEM 9 - SUBMITTALS

9.1 General Submittal Procedures:

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A. General: Prepare and submit submittals required by individual Technical Specification Sections. Types of submittals are indicated in individual specific sections.

1. CM-16 Transmittal Form: All submittals shall be transmitted via electronic email using

National Park Service form CM-16 form. The form will be provided by the Contracting Officer. No action will be taken on a submittal item unless accompanied by the CM-16 transmittal form. Submit completed CM-16 forms to the CO and the COR

B. Submittal List: administrative required submittals are listed below in 9.1.C and does not include technical section submittal requirements included in each technical section.

C. Preconstruction Conference Submittal: Satisfactory evidence of liability insurance coverage and workman’s compensation, and any applicable bonds, must be submitted within 10 calendar days of Notice of Award. The following items shall be submitted a minimum of one week prior to the Preconstruction Conference. If all of these documents have not been received one week prior to the scheduled Pre-Construction Conference date, the conference will be cancelled, Notice to Proceed may not be issued, and the Contracting Officer will consider other contractual remedies. Work shall not commence until written Notice to Proceed has been issued. Contracting Officer will notify Contractor of tentative date for the Pre- Construction Conference:

1. Letter designating Project Superintendent.

2. Construction Schedule. (Must include shop drawings, procurement time including long lead time items, mobilization, trade work progression and completion at minimum.)

3. A comprehensive breakdown of the Schedule of Values.

4. Accident Prevention (Safety) Plan (see section 7 of this document).

5. A list of Subcontractors for this project.

6. Written statements from subcontractors certifying compliance with applicable labor standard clauses (SF1413).

7. Quality Control Plan.

8. Waste Management Plan.

9. Historic Preservation Treatment Plan.

9.2 Shop Drawings, Product Data, and Samples: Contracting Officer will provide sample cover sheet.

A. Shop Drawings: Indicate all coordinating materials and work impacting the installation coordination, connection details, anchorage requirements, hardware locations, and installation details and locations.

1. Submit Shop Drawings according to Part 9.1 of this section to include one digital file (.PDF or .TIF) and two full size hardcopy documents to COR.

B. Product Data: Provide component construction and specification data sheets, anchorage requirements and any other product specific data.

1. Submit Product Data according to Part 9.1 of this section to include one digital file (.PDF or .TIF) to COR.

C. Samples: Submit 2 color samples 4” x 6” minimum in size for all color and product selection. Paint samples shall be actual paint finish drawdown for all project colors.

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1. Submit Samples CM-16 Transmittal Form according to Part 9.1 of this section to include one digital file (.PDF or .TIF) and physical samples of actual material to COR.

D. For submittals specified above, forward submittals to Contracting Officer and COR at least 15 days before need for approval (depends on length of project).

E. After approving submittals, Contracting Officer and/or COR will return one copy to the Contractor.

If submittals are not approved, Contracting Officer will return all copies to Contractor with reasons for rejection. Resubmit, identifying changes. Any work done before approval shall be at Contractor's own risk.

9.3 Approved Equals: If an item in this solicitation is identified as “brand name or equal” or lists more than 1 manufacturer, the description of the proposed item must reflect the characteristics and level of quality that will satisfy the Government’s needs as demonstrated by the salient physical, functional, or performance characteristics that “equal” products must meet and/or exceed that as specified in the solicitation or relevant specification.

A. For each item proposed as an “approved equal,” submit supporting data, including:

1. Drawings and samples as appropriate.

2. Comparison of the characteristics of the proposed item with that specified and with the salient characteristics provided.

3. Changes required in other elements of the work because of the substitution.

4. Name, address, and telephone number of vendor.

5. Manufacturer’s literature regarding installation, operation, and maintenance, including schematics for electrical and hydraulic systems, lubrication requirements, and parts lists. Describe availability of maintenance service, and state source of replacement materials.

B. A request for approval constitutes a representation that Contractor:

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

2. Will provide the same warranties for the proposed item as for the item specified.

3. Has determined that the proposed item is compatible with interfacing items.

4. Will coordinate the installation of an approved item and make all changes required in other elements of the work because of the substitution.

5. Waives all claims for additional expenses that may be incurred as a result of the substitution.

C. Approved Equals will be evaluated and approved/disapproved during the submittal process.

9.4 Progress Reporting: The initial Construction Schedule and Schedule of Values are required a minimum of one week prior to the Preconstruction Conference. After the Notice to Proceed is issued and after on-site work begins, progress will be documented via daily logs and by providing an updated Construction Schedule and Schedule of Values when requested, but minimally with each pay application.

Submit digital copy electronically (PDF preferred) of all required documents. Construction Schedules are normally in bar chart form and indicate estimated starting and completion dates for each part of the work.

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For a pay application to be reviewed and processed in a timely manner, the following information must either be submitted prior to or accompany submission of the pay application:

A. Daily/weekly progress reports during construction as part of the administration process.

B. Updated Schedule of Values: Breakdown each lump-sum item into component work activities used in the schedule, for which progress payments may be requested. The Schedule of Values will form the basis for payment. The work activities broken out within the schedule of values shall be integrated into and made a logical part of the construction baseline schedule submitted under this specification. The total costs for the component work activities shall equal the contract price for that lump-sum item. The Contracting Officer may request data to verify accuracy of dollar values. A sample Schedule of Values format may be provided upon request.

ITEM 10 – TEMPORARY SERVICES

10.1 It is the Contractor’s responsibility to provide temporary services, equipment, tools, and skilled labor as required for the chosen means and methods to perform the work in accomplishing this Contract.

ITEM 11 - PROJECT CLOSEOUT

11.1 Description: The work of this section consists of final cleanup, closeout submittals, final inspection procedures working toward Final Acceptance.

11.2 Cleaning: Remove all tools, equipment, surplus materials, and rubbish. Move attic stock to location coordinated with COR. At time of final inspection, project shall be thoroughly clean and ready for intended use. Inspector holds the right to reschedule if project is not ready for inspection.

11.3 Completion and Final Inspection: Contractor shall submit written certification of project completion and request a final inspection to the Contracting Officer and COR. The Contracting Officer or designee will make an inspection within 10 days of receipt of request or at a mutually agreeable time.

A. If the work is determined to be complete following the final inspection with minor comments, the

COR will prepare and provide the Contractor a Punch List noting outstanding items to be addressed.

B. If the work is not determined to be complete following the final inspection, the Contracting Officer will notify Contractor in writing, stating reasons. Contractor, after completing the work according to the Contract Documents, shall resubmit completion and request a new final inspection. Re-inspection costs may be charged against the Contractor in accordance with the Inspection of Construction contract clause.

C. Contractor shall complete the Punch List within 30 calendar days, or a time directed by the CO.

D. Once Contractor completes all items of work on the Punch List and all contractually required items are accepted, Contracting Officer will issue Letter of Final Acceptance of Work and request the final pay application.

E. If the Contractor fails to complete the work within the time frame, the Contracting Officer may correct the work with an appropriate reduction in contract price or charge for re-inspection costs in accordance with the Inspection of Construction contract clause.

Page | 16

F. Disposition of any permits and warranties required by the specifications in this section.

11.4 Final Acceptance of the Work: After all punch list deficiencies have been corrected, a Letter of Final Acceptance will be issued. A Release of Claims document must be executed and submitted to the Contracting Officer before final payment can occur.

11.5 Warranties

A. Construction Warranty shall be based on date of final acceptance of the work and remain in effect for one year.

B. Provide all manufacturer warranty information of products installed organized by Division. All contact information, extent of coverage and conditions shall be clearly noted as well as date of overall final acceptance.

C. Information shall include operation and maintenance manuals for each warranted product.

PART 2 – PRODUCTS (NOT USED)

PART 3 – EXCUTION (NOT USED)

END OF SECTION

Maps Page | 17

MAPS

Map 1 Park Location Map

Page | 18

George Washington Carver Park Map

Access Road

Moses Carver House

Moses Carver House

Access Road

Park Boundary

Map 2 Park Map

Page | 19

Project Area Map

Project Area

Staging Area

Access Road

Project Area

Staging Area

Access Road

Map 3 Project Area Map

Photographs Page | 20

PHOTOGRAPHS

Figure 1 Roof (east side)

Figure 2 Roof (south side)

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Figure 3 Roof (west side)

Figure 4 Roof (north side)

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Figure 5 Rear porch roof (overhang and decking)

Figure 6 Rear porch roof (overhang)

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Figure 7 Rear porch roof (metal roofing)

Figure 8 Chimney (rear)

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Figure 9 Chimney (front)

Figure 10 Valley flashing (south)

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Figure 11 Valley flashing (north)

Figure 12 Split-rail fence enclosure

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Figure 13 Staging Area

GWCA 322595 4/04/2022

Div. 7 V. 2021-10-18 WOOD SHINGLES 073129 Page | 1

SECTION 073129

WOOD SHINGLES

PART 1 - GENERAL

1.1 SCOPE OF WORK

A. Project Location: George Washington Carver National Monument, Diamond MO 64840.

B. Building(s) Name/Identifier: Moses Carver Late Period Dwelling; LCS ID 000442; HS-05

1.2 SUMMARY

A. Section Includes:

1. Selective Demolition.

2. Wood roof shingles.

3. Underlayment materials.

4. Lead-coated copper roofing.

5. Lead-coated copper accessories and trim, such as:

a. Counterflashing and base flashing.

b. Wall flashing.

c. Valley flashing.

d. Miscellaneous accessories.

1.3 PREINSTALLATION MEETINGS

A. Preinstallation Conference: Conduct conference at Project site.

1.4 ACTION SUBMITTALS

A. Product Data: For the following:

1. Wood roof shingles.

2. Underlayment materials.

3. Asphalt roofing cement.

4. Sheet metal roofing, flashing, and trim.

5. Elastomeric flashing sealant.

B. Shop Drawings: For metal flashing and trim.

C. Samples: For each exposed product and color.

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1.5 INFORMATIONAL SUBMITTALS

A. Sample warranty.

1.6 CLOSEOUT SUBMITTALS

A. Maintenance data.

1.7 SUBMITTAL COORDINATION

A. Submittal List: A submittal list has been attached to the end of this Specification Section. The intent is to provide an overall summary of the submittal requirements and not a comprehensive list. The requirements of the individual Specification Sections, terms and conditions of the Contract still apply regardless of what is shown on the submittal list.

1.8 QUALITY ASSURANCE

A. Installer Qualifications: Cedar Shake and Shingle Bureau (CSSB) member.

B. Grading Agency Qualifications: An independent testing and inspecting agency recognized by authorities having jurisdiction as qualified to label wood products for compliance with referenced grading rules.

1.9 WARRANTY

A. Materials Warranty: Manufacturer's warranty administered by CSSB and on CSSB's standard form in which manufacturer agrees to repair or replace CSSB-labeled products that fail in materials within specified warranty period. Material failures include manufacturing defects that result in leaks.

1. Materials Warranty Period: Limited lifetime from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Exterior Fire-Test Exposure: Provide roofing materials identical to those of assemblies tested for fire resistance in accordance with American Society of Testing Materials (ASTM) E108 or UL 790 by Underwriters Laboratories or another testing and inspecting agency acceptable to authorities having jurisdiction. Identify products with appropriate markings of applicable testing agency.

1. Wood Products: Class B.

a. Fire-Retardant Treatment: Exterior-type pressure treatment complying with American Wood Protection Association (AWPA) U1 and AWPA T1.

b. Accelerated Weathering: Subject test specimens to ASTM D2898 Method A before testing.

c. Identification: Attach a label to each bundle of wood products; include identification mark of testing agency acceptable to authorities having jurisdiction and identify

Div. 7 V. 2021-10-18 WOOD SHINGLES 073129 Page | 3 manufacturer, chemical treatment, method of application, purpose of treatment, and warranties available.

B. Grading Rules: Provide wood products that comply with CSSB grading rules for products indicated.

1. Identification: Attach a label to each bundle of wood products that identifies manufacturer, type of product, grade, dimensions, and identification mark of grading agency acceptable to authorities having jurisdiction.

2.2 WOOD ROOF SHINGLES

A. Cedar Shingles: Smooth-sawn western red cedar shingles.

1. Grade: No. 1, with starter courses of No. 1.

2. Exposure:

a. Roof Slopes 3:12 to 4:12: 4-1/4 inches (110mm) maximum.

b. Roof Slopes 4:12 and Steeper: 5-1/4 inches (140mm) maximum.

3. Size: 18 inches (457 mm) long; 0.45 inch (11 mm) thick at butt.

B. Cedar Shingle Ridge Units: Manufactured, smooth-sawn western red cedar caps for ridges and hips of same thickness as shingles, 7 inches (178 mm) wide; beveled, alternately overlapped, and nailed.

1. Grade: No. 1.

2. Length: 16 inches (406 mm), or 18 inches (457 mm) as recommended for the roof application by the manufacturer.

2.3 UNDERLAYMENT MATERIALS

A. Felt: Asphalt-saturated organic felts, nonperforated and complying with the following:

1. ASTM D226/D226M: Type II, No. 30.

2. Use as underlayment.

B. Valleys, Eaves, Rake, and Roof/Wall Intersections: Install Self-Adhering, Polymer-Modified Bitumen Sheet: ASTM D1970/D1970M, minimum 55-mil- (1.4-mm-) thick sheet; glass-fiber-mat-reinforced, polymer-modified asphalt; with slip-resistant top surface and release backing; cold applied. Provide primer for adjoining concrete, masonry, and metal surfaces to receive underlayment. Approved product includes but is not limited to the following:

1. Grace Ice & Water Shield; Grace Construction Products.

2. WinterGuard Waterproofing underlayment; CertainTeed.

3. RhinoRoof Granulated Self-Adhered underlayment.

4. Other approved equals.

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2.4 VENTS: N/A

2.5 ACCESSORIES

A. Asphalt Roofing Cement: ASTM D4586/D4586M Type II, asbestos free.

B. Roofing Nails: ASTM F1667, stainless steel, Type 304, or stainless steel, Type 316 box-type wire nails, sharp pointed, and of sufficient length to penetrate a minimum of 3/4 inch (19 mm) into sheathing or to penetrate through roof sheathing less than 3/4 inch (19 mm) thick.

1. Where nails are in contact with metal flashing, use nails made from same metal as flashing.

C. Asphalt-Saturated Organic Felt Underlayment Fasteners: As recommended in writing by organic felt-underlayment manufacturer for application indicated.

2.6 SELECTIVE DEMOLITION

A. General: Demolish and remove existing construction only to the extent required by new construction and as indicated. Use methods required to complete the Work within limitations of governing regulations and as follows:

1. Full Roof Tear-off: Removal of existing roofing system down to existing roof deck or structure.

2. Temporarily protect existing roofing system and components that are to remain as required from damage.

3. Do not remove more roof than can be replaced in a day, and the roof will be made watertight each night.

4. Remove debris and materials so as not to impose excessive loads on supporting roof, structure or framing.

5. Dispose of demolished items and materials promptly.

B. Removed and Reinstalled Items:

1. Clean and repair items to functional condition adequate for intended reuse.

2. Reinstall items in locations indicated, or in original locations as required. Comply with installation requirements for new materials and equipment. Provide connections, supports, and miscellaneous materials necessary to make item functional for use indicated.

3. Lightning protection to be removed and reinstalled by a certified installer.

C. Existing Items to Remain: Protect construction indicated to remain against damage and soiling during selective demolition.

D. Inspect deck after tear-off of roofing system.

1. If broken or loose fasteners that secure deck panels to one another or to structure are observed, or if deck appears or feels inadequately attached, immediately notify COR.

a. Do not proceed with installation until directed by COR.

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2. If deck surface is unsuitable for receiving new roofing or if structural integrity of deck is suspect, immediately notify COR.

a. Do not proceed with installation until directed by COR.

E. Disposal of Demolished Materials:

1. General: Except for items or materials indicated to be reused, salvaged, reinstalled, or otherwise indicated to remain NPS's property, remove demolished materials from Project site.

a. Do not allow demolished materials to accumulate on-site.

b. Remove and transport debris in a manner that will prevent spillage on adjacent surfaces and areas.

2. Burning: Do not burn demolished materials.

3. Disposal: Transport demolished materials off NPS's property and legally dispose of them.

F. Cleaning:

1. Clean adjacent structures and improvements of dust, dirt, and debris caused by selective demolition operations. Return adjacent areas to condition existing before selective demolition operations began.

2.7 SHEET METAL ROOFING, FLASHING, AND TRIM

A. Performance Requirements:

1. General: Sheet metal roofing, flashing, and trim assemblies shall withstand wind loads, structural movement, thermally induced movement, and exposure to weather without failure due to defective manufacture, fabrication, installation, or other defects in construction. System shall accommodate movement of components without buckling, failure of joint seals, undue stress on fasteners, or other detrimental effects when subjected to seasonal temperature changes and live loads.

2. Sheet Metal Standard for Flashing and Trim: Comply with National Roofing Contractors Association’s (NRCA's) "The NRCA Roofing Manual" and Sheet Metal and Air Conditioning Contractors National Association’s (SMACNA's) "Architectural Sheet Metal Manual" requirements for dimensions and profiles shown unless more stringent requirements are indicated.

3. Single Ply Roofing Industry (SPRI) Wind Design Standard: Manufacture and install copings and roof edge flashings tested according to SPRI ES-1 and capable of resisting the following design pressure:

a. Design Pressure: 30 psf vertical design pressure.

4. Thermal Movements: Allow for thermal movements from ambient and surface temperature changes to prevent buckling, opening of joints, overstressing of components, failure of joint sealants, failure of connections, and other detrimental effects. Base calculations on surface temperatures of materials due to both solar heat gain and nighttime-sky heat loss.

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B. Sheet Metal:

1. General: Protect mechanical and other finishes on exposed surfaces from damage by applying strippable, temporary protective film before shipping.

2. Lead-Coated Copper Flashing: Complies with ASTM B 101, temper designation H00, consisting of cold-rolled copper sheet coated both sides with lead weighing not less than 12 lbs. nor more than 15 lbs. per 100 sq. ft. of copper sheet (one half of total weight of lead applied each side), and as follows:

a. Weight of Coated Sheet: Not less than 17.2 oz. per sq. ft. (nominal weight of uncoated copper sheet, 16 0z. per sq. ft.) except as otherwise indicated.

b. Surface: Smooth, flat.

3. Lead-Coated Copper Roofing Sheets: Lead-coated copper sheet complying with ASTM B 101, temper designation H00, consisting of cold-rolled copper sheet coated both sides with lead weighing not less than 12 lbs. nor more than 15 lbs. per 100 sq. ft. of copper sheet (one half of total weight of lead applied each side), and as follows:

a. Weight of Coated Sheet: Not less than 21.2 oz. per sq. ft. (nominal weight of uncoated copper sheet, 20 oz. per sq. ft.) unless otherwise indicated

b. Surface: Smooth, flat.

C. Miscellaneous Materials:

1. General: Provide materials and types of fasteners, solder, protective coatings, sealants, and other miscellaneous items as required for complete sheet metal roofing, flashing, and trim installation and as recommended by manufacturer of primary sheet metal or manufactured item unless otherwise indicated.

2. Solder: ASTM B32; Provide 60-40 tin/lead or alternative of similar or greater strength solder. Killed acid flux.

3. Flux: Muriatic acid neutralized with zinc or approved brand of soldering flux.

4. Fasteners: Wood screws, annular threaded nails, self-tapping screws, self-locking rivets and bolts, and other suitable fasteners designed to withstand design loads and recommended by manufacturer of primary sheet metal or manufactured item.

a. Nails for Lead-Coated Copper Sheet: Copper, bronze or stainless steel (alloy 304/316) 0.109 inch minimum not less than 7/8 inch long barbed with large head.

5. Roofing Felt Underlayment: Asphalt saturated felt weighing not less than 30 lbs per 100 square feet.

6.