B12_MISC_2nd_QA_0002.docx
DOCX document 17 KB Posted
- Attached to
- HSTR GW and FW Roof Replacement
- Solicitation number
- 140P6026Q0046
About this file
This is a Questions and Answers document for the HSTR GW and FW Roof Replacement solicitation (140P6026Q0046) issued by the Department of the Interior National Park Service Midwest Region. The document addresses the second set of inquiries from potential contractors regarding roof replacement work on two historic structures: the Frank Wallace and George Wallace buildings.
The Q&A clarifies that the Frank Wallace roof currently has filled-in skip sheathing, while the George Wallace roof has either filled-in skip sheathing or OSB sheathing, both of which are acceptable for reuse pending necessary repairs. The government emphasizes that contractors must submit a Historic Preservation Treatment Plan documenting procedures to protect historic fabric during construction. Key preservation requirements include: protecting existing gutters and downspouts; ensuring one-to-one matching of roofing elements with existing components including trim boards, fascia, and step flashing; minimizing ground disturbance with advance notification to the Contracting Officer's Representative (COR) or Contracting Officer (CO) of any concerns; protecting exterior finishes, windows, walls, and trim; and preserving vegetation throughout the project. Contractors must also detail staging and sequencing of work, list large equipment and space requirements, and use protective plywood under heavy equipment to protect the cultural landscape.
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HSTR GW and FW Roof Replacement 2nd set of Questions/Answers 140P6026Q0046
1. What type of decking is currently installed on the roofs? Answer: The Frank Wallace Roof is filled-in skip sheathing. We are not entirely sure what is on the George Wallace, but it will either be the filled in skip sheathing or OSB sheathing. Either way, both are acceptable for reuse, aside from any repairs needed.
2. Please clarify the Historic Preservation Treatment Plan requirement. Answer: For a HP treatment Plan, we are primarily interested in having the contractor document processes and procedures for how historic fabric will be protected during construction.
Historic Preservation Treatment Plan:
· Protect all existing gutters and downspouts
· Ensure completed project creates a one-to-one match with the existing roofing elements – examples: trim boards to be replaced should have same/similar (with approval) routed pattern; fascia boards to be the same size and painted to match existing; step flashing and any visible roofing elements shall be replaced in-kind as needed
· Ground disturbance shall be at a minimum – report any concerns or expected disturbances to COR/CO – including but not limited to concerns with rain or wet ground, areas of staging, larger equipment tracks.
· Address protection of existing exterior finishes to remain, windows, walls, trim
· Staging and Sequence of work
· List any large equipment and space needs
· Park suggests plywood under any heavy equipment to protect cultural landscape.
· Vegetation around the homes will be protected throughout the project.
File details come from the government source that posted it. Updated .