1970 Force Main Plans (1 MB) 17466.pdf

This document contains engineering plans and specifications from 1970 for wastewater system improvements in the City of Coldwater, Michigan (Contract 70-S-2, Divisions A&B, Project WPC-MICH-1785), prepared by McNamee, Porter and Seeley Consulting Engineers of Ann Arbor. The plans detail force main installations and improvements along several major routes including State Street, Western Avenue, and various service building modifications. The drawings include detailed specifications for pumping mains, special structures, valve vaults, air release structures, and river crossing details.

The technical drawings show extensive detail of pipeline alignments, elevations, cross-sections, and specialized structure designs including river crossing installations, highway crossing details, and pump station modifications. The plans incorporate electrical diagrams and control systems for service buildings, precise dimensional specifications for concrete structures, and detailed requirements for pipe installations with grades, slopes and connection details. The drawings indicate this was a comprehensive wastewater infrastructure project involving multiple construction components across the city's system.