AWWA DSS60346

This slide presentation outlines information on cleaning and lining of transmission mains in the Chicago water system. Topics covered include: map of the city of Chicago water supply area; distribution system pipe diameter and length; water main replacement; reasons for relining; Hazen and Williams C-Factor; range of C-factors; Wabansia Ave. lining project; Harlem Ave. lining project; project scope for Wabansia main; site excavation; lining the water main; hydraulic improvements after cleaning and lining project; and, cost and time comparison for Wabansia main between relining vs. replacement.