C06__Vendor_Q_A_Stoplogs_G1-18_Amd_4_0004.pdf
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- Solicitation number
- 140R1724Q0011
About this file
This document appears to be a set of questions and answers (Q&A) related to a federal contract opportunity for the Grand Coulee Second Set of Main Unit Stoplogs G1-G18.
The Q&A provides information about the existing coating system on the gates, which is a vinyl resin system. It also addresses a proposed substitution of 5160H carbon steel for the springs specified in the drawings, stating that while a substitution may be permissible if the required spring sizes are unavailable, the key technical issue is complying with the specified spring constant and material yield strength requirements.
The related federal contract opportunity is for the Grand Coulee Second Set of Main Unit Stoplogs G1-G18, solicited by the Department of the Interior Bureau of Reclamation. The solicitation number is 140R1724Q0011.
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Text version
6-27-2024
G 1-18 Stoplogs Vendor Questions
Question #1 What is the coating system on the existing gates?
Answer #1: The existing coating system is a vinyl resin system. See Tabulation below:
Question #2: Could we substitute 5160H carbon steel for the springs on drawings 222-100-61163, 222- 100-61165, 222-100-61166, because several spring manufactures stated music wire doesn’t come in sizes that large?
Answer #2: With the limited amount of information you've provided, we can't state conclusively that the proposed substitution is permissible. That said, in general substituting one type of spring steel for another type of spring steel would be a permissible substitution if the size required is not available. The key technical issue is complying with the specified spring constant (on the drawings) and providing a material with enough yield strength that it doesn't take a permanent set at the maximum design deflection stated in Article 2.03 of Section 35 21 20 - Stoplogs.
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