B08__A14_Historic_Drawings_MC420.pdf

This document is a set of technical engineering drawings for a radial gate structure at a main canal station operated by the Colorado River Agency, Branch of Land Operations. The drawings depict the detailed structural design and specifications for a 80-foot by 17-foot radial gate facility located at station 421+50 in a main canal system.

The technical drawings include comprehensive plans, elevations, and sectional details for the radial gate structure and associated components. Key elements shown include the half plan and sectional elevations of the main canal and gate structure, hoisting equipment assembly with motors and chain systems, pivot pedestal details with load-bearing specifications, gate drum pedestals and shafts (including floating and drum shaft designs), downstream elevation views, and various mechanical details for pins, brackets, rollers, and sealing assemblies. The drawings specify materials including stainless steel and cast steel for critical components such as pivot pins, rollers, and bearing blocks. Associated equipment detailed includes a geared flexible coupling, limit switch mounting mechanisms, rope and socket assemblies, and electrical control systems. The document also contains a list of parts and equipment with drawing references and notes regarding assembly, inspection requirements, and operational specifications. The drawings are dated June 1958 and reference related specifications including DRA-1053 through DRA-1059 for additional structural and equipment details.