Attachment 3 Spec Reference dwgs.pdf

This document is a set of technical engineering drawings and standard designs for transmission line structures used in electrical power distribution systems.

The drawings provide detailed specifications for suspension and tension structures designed for 69KV, 115KV, 138KV, 161KV, and 230KV transmission lines. The designs include complete structural material lists with part numbers, quantities, and descriptions for components such as poles, crossarms, bolts, insulators, clamps, and grounding materials. Key structural elements detailed include overhead ground wire attachments, phase fitting assemblies, wood and steel crossarm configurations, and various bracing arrangements. The documents specify drilling details for crossarms with standardized bolt hole dimensions and spacing requirements. Material specifications cover steel angles, wood poles, fiberglass guy strains, and hardware components with references to applicable standards such as ASTM designations. The drawings indicate typical structure heights, angles, and spacing configurations ranging from approximately 21 to 45 feet depending on voltage class and structure type. Additionally, the designs include insulator assemblies, suspension and tension hardware, dead-end configurations, and phase fitting details with specific component specifications. These appear to be reference standard designs developed for the Western Area Power Administration and the United States Department of Energy for utility-scale transmission infrastructure. The engineering drawings are dated between 1981 and 2006 and include revision notations indicating design updates over that period.