Drawings_for_Sand_Pass_Cattle_Guard_0001.pdf

This document is Attachment 2 containing technical specifications and design standards for cattle guard foundations and related equipment used by the United States Department of the Interior, Bureau of Land Management.

The attachment specifies concrete foundation requirements for cattle guards, including detailed construction procedures for reinforcement steel placement, concrete vibration and finishing, concrete curing for a minimum of seven days, and handling restrictions until concrete reaches 70% design strength. Concrete must be free of cracks, chipped edges, and honeycombs before government acceptance. The document includes engineering drawings and specifications for cattle guard grids, bases, and wings, with detailed dimensions provided in both imperial and metric measurements. Steel cattle guard grid components feature cold-formed structural steel with specific hole patterns, cleanliness requirements, welding specifications, and modular assembly details. Additional specifications address tubular end wings, angle-iron end wings, and swing wings with corresponding structural requirements. The technical drawings indicate dimensions, material grades, welding symbols, and installation notes for proper assembly and field deployment. All specifications reference ASHTO H-20-44 design loading standards and include provisions for both standard and wild horse modifications. The documentation was originally designed in January 1986 and updated with metric conversions in September 1997.