A06_RPFO_BLM_generic_Cattleguard_wing_drawing.pdf

This is a technical specification drawing for cattle guard wings, issued by the United States Department of the Interior Bureau of Land Management. The document provides detailed engineering designs and dimensions for the fabrication and installation of cattle guard wing assemblies, which are protective barriers used at ranch and grazing entrances.

The drawing includes specifications for three primary wing configurations: tubular end wings, angle-iron end wings, and swing wings. Components detailed include wood posts (6" x 6" x 6'-0"), steel pipe and tubular steel construction elements, diagonal braces, horizontal struts, and various fastening hardware with precise measurements in both imperial and metric units. The design incorporates safety considerations such as optional sheep-tight fencing installation and specific positioning requirements for movable wing sections. Key construction notes specify that wings must be fastened to separate 6" x 6" wood fence posts with 2'-0" ground burial depth, with alternatives for cattle guard installations using woven wire fencing. The drawing was originally designed October 4, 1990, with subsequent metric conversion updates (September 30, 1997) and format updates (July 31, 2009). This appears to be a standard detail drawing (Standard Detail Drawing No. 02879-4) used for federal land management cattle control infrastructure.