A06_RFPO_L-Shaped_Cattle_Guard_Bases.pdf

This is a technical drawing specification document from the U.S. Department of the Interior Bureau of Land Management for a Standard L-Shaped Cattleguard Base, dated January 17, 2012, drawn by Jeremy Garcia.

The drawing provides detailed engineering specifications for fabricating an L-shaped cattle guard base structure with the following key requirements: the sills must be equal in length to the grid width, with an overall front view dimension of 11 inches wide and 22 inches tall; the top view shows an 8-inch width with total depth of 18½ inches; and the side section (Section AA) indicates a 22-inch height with a 5½-inch base measurement and provision for a 2"x2" 1/2" pipe Schedule 80 clear through for lifting. The design mandates use of #4 rebar throughout, with design stresses specified at f'c = 4,000 psi and fs = 40,000 psi. The vendor must submit a stamped design for approval, use #4 rebar as specified, and submit the fabricator's standard lifting eye for approval in lieu of the design shown. All sill lengths must match the grid widths as indicated in associated grid specifications. The drawing is noted as Sheet 1 of 1 with fields for design review and approval signatures.