NASA/Ames Research Center, JA:M/S 241-1, Moffett Field, CA 94035-1000

Z -- REROOFING OF BUILDING N204: ACCOMPLISH SOL RFQ2-37086MJM DUE 061799 POC Michael J. McIntyre, Purchasing Agent, Phone (650) 604-1364, Fax (650) 604-3772, Email mmcintyre@mail.arc.nasa.gov -- Barbara A. Drake, Contracting Officer, Phone (650) 604-3002, Fax (650) 604-4646, Email bdrake@mail.arc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/ARC/date.html#RFQ2-37086MJM. E-MAIL: Michael J. McIntyre, mmcintyre@mail.arc.nasa.gov. This is a modification to the synopsis entitled Reroofing of Building N204 which was posted on May 19, 1999. You are notified that the following changes are made: The following clarifications and answers to questions at the Pre-bid Conference and Site Tour on June 3, 1999 are hereby made part of the solicitation and the resultant contract. a) Question: How many existing roofs are there on the building? Answer: There are two roofs present. b) Question: How thick is the existing insulation? Answer: The existing fiberglass insulation is approximately 2-1/2 to 3 inches thick. c) Question: Is the lower canopy roof included in the re-roofing project? Answer: Yes. d) Question: Does the new roofing system require tapered insulation? Answer: Yes. Tapered fiberboard insulation shall be install as specified on the upper roof only. The insulation on the lower canopy roof shall consist of a _ inch of high density fiberboard over 1 inch of polyisocyanurate as shown on the drawings. e) Question: Detail #8 on sheet 204-9901-A3 shows an expansion joint cover at the junction between the lower roof canopy and the adjacent stucco wall. Can we install sheet metal counterflashing instead of the expansion joint cover? Answer: Yes. However, the contractor shall submit drawings detailing the installation of the proposed sheetmetal counterflashing. The contractor shall also submit drawings for all counterflashing corners, end pieces and transitions between roof edge and continuous wall. Drawings shall be in accordance with Section 01300 "Submittals" of the specifications and shall be approved by the Contracting Officer prior to installation. f) Question: What is the height of the building? Answer: The height of the building is approximately 35 feet. g) Question: Is there any asbestos on the roof, ducting or piping? Answer: There is no asbestos in the roofing plies/membrane, ducting or piping. However there is asbestos in the mastic repairs found throughout the roof. h) Question: What type of deck is present? Answer: The existing wood deck is a 5/8 inch plywood tongue and groove glued underlayment. i) Question: Are we required to glaze coat fiberglass plies to protect against moisture prior to installation of capsheet? Answer: If contractor does not wish to glaze uncapped fiberglass plies, the contractor shall cover all exposed fiberglass plies with a tarp. j) Question: Does the new roofing system require modified base flashing materials? Answer: Yes. A granulated modified SBS sheet is specified for base flashing applications. Refer to specifications for material and installation requirements. k) Question: Do we have to remove all rooftop equipment? Answer: The contractor shall remove all equipment necessary to properly install the specified roof system. l) Question: Is there a line item for deck repair? Answer: No m) Question: Can we get a copy of the list of Contractors requesting Drawings and Specifications? Answer: Yes, it will be posted in nest few days. n) Question: How long can the rooftop equipment be kept inoperable? Answer: 4 weeks. Requests for an outage extension shall be made in writing to the Project Manager at least 10 days in advance of time required. The due date for receipt of quotes is not extended Documents related to this procurement are available over the Internet and are in Microsoft Office Suite (Word 6.0, Excel 5.0, or PowerPoint 4.0) format and will reside on a World Wide Web (WWW) server, which may be accessed using a WWW browser application. The Internet site, or URL, for the NASA/ARC Business Opportunities home page is http://procurement.nasa.gov/EPS/ARC/class.html Offerors are responsible for monitoring this site for the release of the solicitation and any amendments. Potential offerors are responsible for downloading their own copy of the solicitation and amendments (if any). Posted 06/08/99 (D-SN340568). (0159)

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