Questions_Set_5.doc
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- Construct Fence
- Solicitation number
- W912GY16B0005
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Questions Set 5
1. On the grounding detail it says that an approved Clamp-Type fitting can be used. On set #4 of the Questions & Answers it was asked if the “clamp-type” was acceptable, the answer was a that a Hydraulic pressure applied-clamp type would be acceptable. Is a Hydraulic pressure applied-clamp the only clamp style that is acceptable? Are there certain locations on the fence layout or a certain distance between grounding rods that grounding is required? Any additional specs/information on the grounding would be appreciated.
ANSWER: A. Hydraulic pressure applied-clamp, trade name Brundy, will be the only clamp approved. It does not have to be a Brundy, but is must equivalent to a
Brundy pressure applied clamp.
B. Hydraulic pressure applied Brundy or exothermic.
C. 1ea ground rod on each corner. Ground rod will be 10foot by 5/8inch copper or copper clad. 100% of rod will be buried in the soil.
2. We were looking over the Questions and Answers and read that the fence specs are on pages 2 & 3 of the drawings. Those pages do not give the weight of the pipe to be used, only the OD sizes which have little to do with the strength of the posts. This would may cause a very wide difference in the prices, if one person used a lighter weight pipe that would not be up to the normal heaver federal standards that usually are used in security fencing. To just go by the OD pipe sizes would short change the government and the standards for fencing that it usually specs out on jobs of this type. Most jobs of this type usually use a schedule 40 weight pipe. Will there be a clarification on the pipe weight to be used for the posts to go along with the OD sizes given?
ANSWER: Top rail: 1 7/8inch-OD, Wall thick-.111, weight per foot (WPF) 1.84lb.
Line Posts: 1 7/8inch-OD, Wall thick-.120, WPF-2.28lb.
Corner & brace post: 2 3/8inch-OD, Wall thick-.130, WPF-3.12lb.
Walk thru gates: 2 3/8inch-OD, wall thick-.160, WPF- 4.64lb.
12foot opening gates: 4inch-OD, Wall thick-.160, WPF-6.56lb.
Larger than 12foot gate openings: 6 5/8inch-OD, Wall thick-.280, WPF-18.97lb.
File details come from the government source that posted it. Updated .