Drill rig transport onto Monolith 48, over the active lock anchor head has several square feet of threaded surface area. Despite careful machining and lubrication, the amount of torque required to assemble and disassemble the threaded connections was surprisingly large. Conclusion Stressing ram and lift off system stressing on anchors The five de-tensionable anchors installed will allow for future load monitoring and load adjustment as needed for the continued use of the exist ing navigat ion chamber at Chickamauga Lock while a new lock is being constructed. These anchors were installed with no impact to the navigation lock chamber over the course of 5 months. While it is believed that the five, 61-strand anchors at Chickamauga are the first and largest known restressable anchors to have been installed and tested in the United States, a second USACE project employing this method is currently underway. Brayman Construction will utilize these threaded wedge plates on 1,150 anchors ranging in size from 10- to 61-strands at the Bluestone Dam in Hinton, West Virginia. Although many of the lessons Lift off system being prepared for use learned at Chickamauga will be applied to the anchor installation at Bluestone, there will also be new challenges. The work at Bluestone Dam is scheduled for completion in 2029. Jeff Hopple is a professional engineer and specialty drilling and grouting group manager with Brayman Construction Corporation. He has over 15 years of experience in the construction of post tensioning and grouting for lock and dam structures. Jim Gagliardi is a professional engineer and quality control manager with Brayman Construction Corporation. He has over 25 years of experience in the construction and rehabilitation of lock and dam construction. DEEP FOUNDATIONS * JULY/AUG 2021 * 103