Drawing EQN-49 (1).pdf

This document is a detailed technical drawing from the Commonwealth of Pennsylvania Department of Transportation for curb bumpers (left and right) designed for snow plow Type 731 and 721 series. The two-sheet engineering specification set provides precise dimensional details, manufacturing requirements, and design specifications for the curb bumpers, including specific measurements for hole placement, bend lines, and material composition.

The technical drawing specifies critical manufacturing requirements, including the use of AISI 1060 grade steel, a 1/4" x 1-1/2" carbon steel flat stock running the full length of the cutting edge, and welding specifications. Alternative design options are permitted with written approval from the Chief Equipment Division, with notes indicating that tungsten carbide inserts may be used and must be centered in the blade edge. The drawing is dated 7-29-98 and includes revision history, with the original drawing created on 4/22/92 and subsequent revisions made in 2/23/96 and 03-30-07, suggesting ongoing refinement of the snow plow curb bumper design.