Attachment_0002_Specs.pdf

This document contains technical specifications for barbed wire fence installations developed by the U.S. Department of the Interior, Bureau of Land Management, Branch of Engineering. The specifications detail three primary fence configurations: standard 4-wire fence, corner/end/stress panels, and wooden stay wire gates.

The 4-wire fence specification establishes a standard line panel measuring 16 feet-6 inches center-to-center between posts with smooth galvanized wire strands spaced at defined intervals. Steel line posts driven a minimum of four feet into the ground may be substituted for rock deadmen at minor depressions. The specification includes provisions for adding barbed wire strands or rock deadmen between the bottom wire and ground where depression exceeds 20 inches. Corner, end, and stress panels utilize three-post or two-post configurations with galvanized pipe and brace clamps (Detail A) or wire holders (Detail B) to secure wires under tension. Posts must be either 2-3/8 inches outside diameter schedule 40 galvanized steel pipe or equivalent structural material, with minimum lengths of 7 feet for standard installations and 8 feet for stress panels. The wooden stay wire gate specification (Type A) incorporates 3-inch minimum spacing between wood stays and smooth wire loops at the bottom for fastening, with spacing between panel posts set at 16 feet-4 inches center-to-center. All specifications include metric conversions and emphasize safety considerations throughout the installation process.