_408B_Transformer_Base_TB3-17.pdf

This document appears to be a technical specification sheet for ground mounting applications under contract TB3-17, involving Akron Foundry Company and approved by F.H.W.A. (Federal Highway Administration) to 1985 AASHTO requirements. The document references Akron Foundry Company as the manufacturer and includes approval information for inboard ground applications.

The specifications detail breakaway base mounting systems for traffic control devices, specifically designed for ground mounting applications. The document shows technical drawings and dimensions for bolt circle configurations, including bottom bolt circles for steel washers and top bolt circles with specific spacing measurements. Key technical specifications include various diameter measurements (ranging from approximately 15" to 17"), mounting configurations for different bolt patterns, and compliance with 1985 AASHTO standards. The breakaway base system is designed with safety features including proper load distribution and structural integrity for roadway applications, with detailed dimensional drawings showing installation parameters and mechanical specifications for field deployment.