Chickamauga Lock & Dam Post-Tensioning Project Chattanooga, Tennessee Back to Project List Post-Tensioned Rock & Soil Anchors Drilling Over 250, 52-strand high capacity anchors are installed to resist Alkali-Aggregate Reaction growth. Project Overview: Layne GeoConstruction installed over 250, 52-strand, 1836 kip high capacity anchors at the Chickamauga Lock and Dam. The anchors were installed to resist and control concrete growth due to Alkali-Aggregate Reaction. The complex project was performed in five separate stages, over a five year period. Each stage focused on a particular section of the lock and dam. Access to the anchor locations was difficult and all drilling was conducted with powerful limited access drill equipment. The 1200 feet long lock chamber of Chickamauga Lock and Dam remained in continual operation for 95% of the project work period. Seventeen of the anchors were installed during a three week lock outage. Layne GeoConstruction crews worked twenty-four hour shifts during the outage to complete the work.     Value of Work Performed: $5,500,000 Project Duration: Over 5 year period Project Completion Date: January 2000 Project Reference: Engineering Consultant Tennessee Valley Authority Vann Newel (423) 751-7425