Abilene State School Sanitary Sewer Improvements

CLIENT: Abilene State Supported Living Center

eHT provided design and management for the replacement and rehabilitation of approximately 18,000 linear feet of cast iron and clay tile pipe at the Abilene State Supported Living Center. The existing sanitary sewer system at the school was in service for approximately 100 years and was in extremely poor condition. Unique challenges facing this project involved requirements for limited open excavations, protection of the residents and a need to maintain full functionality of the system at all times. Many of the main collection lines were under streets or in other inaccessible locations such as below building foundations. In order to accommodate these issues, cured-in-place pipe lining (CIPP) was utilized to rehabilitate the collection mains (6-inch, 8-inch, 10-inch and 12-inch) virtually restoring each lines’ full-service capacity. Pipe bursting was utilized in instances where the existing lines were structurally insufficient for the CIPP lining to be effective, as well as to up-size many of the smaller, capacity limited lines.