Amendment_1_-_RFI_Questions_5-29-24_0001.xlsx

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Attached to
CONG 248643 Replace Wilderness Boardwalk Sections Federal contract opportunity
Solicitation number
140P2024R0054
Issued by
Department of the Interior National Park Service National Office

About this file

This document is an amendment to a Request for Information (RFI) related to the federal contract opportunity to replace wilderness boardwalk sections. The key details are:

The RFI addresses questions about the contract requirements, including: 1) the need to remove existing helical coils, 2) the requirement to use helical piles instead of pylon-barbs, 3) the use of aluminum wire mesh instead of stainless steel, 4) the need to account for weather delays and flooding in the project schedule, 5) securing construction areas from public access, 6) the prohibition on using water jetting to drive piles, and 7) the varying elevations of the new boardwalks.

The related federal contract opportunity is for the CONG 248643 project to remove and replace the elevated and low floodplain boardwalk behind the Visitor Center, within Wilderness boundaries. The new boardwalks must meet Architectural Barriers Act Accessibility Standards. The solicitation number is 140P2024R0054 and the contracting agency is the Department of the Interior National Park Service.

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Text version

Sheet1

29-May-24
#QUESTIONRESPONSE
1Is the contractor required to remove the existing helical coils or can they be cut flush and left insitu to minimize erosion and associated impact to the area?All existing piles must be removed.
2Will new helical coils be required due to the anticipated weight of the new boardwalk? Can pylon-barbs be used instead of helical coils?Helical pile requirements are shown in the Contract Documents. Piles are required for multiple reasons, including but not limited to: seismic load, lateral load, flooding, live loads and soil conditions. In addition, helical piles are required based on the constructability and minimizing disturbance within the Wilderness area.

Pylon-barbs are not acceptable.

3Is the mesh required to be 416 stainless steel?Wire mesh requirements are listed in the Project Manual Section 057300. Wire mesh is aluminum. Fasteners are Type 316 stainless-steel.
4How much downtime is expected on a monthly basis due to weather delays and high flooding?See Project Manual Section 013218, 2.2.B.7.d.3). Weather Calendar. The project schedule must include anticipated flood and weather events based on available information. See Section 013218, 2.2.B.8.c. for suggested resources.
5Will the contractor to be working in or traversing through areas that are open to the public?The Contractor is responsible for securing active construction areas from the public. The path to the different Boardwalk locations may overlap with the public access locations.
7Will contractor be allowed to drive pylons using the water-jet method?Helicals must be driven per the manufacturers recommendations. Water jetting is not allowed.
9What is the elevation on boardwalks from ground to board, and from ground to top rail?Elevations of the boardwalks vary through the sections and terrain. Low boardwalk has a maximum deck height of 24-28 inches off the existing ground. High boardwalk varies. Elevations of the high boardwalk decking are shown on the plans.
10

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