42 inch holes Tennessee Dam Project a

Knoxville, Tennessee

42 inch holes

Tennessee Dam Project

Fountain Square

Cincinnati, OH


Tennessee Dam Project

Cherokee and Douglas Dam

$40 Million Dam Strengthening Project

 The Cherokee and Douglas Dams had been identified as problematic for the Tennessee Valley Authority (TVA) in its quest for licensing with the Nuclear Regulatory Commission to bring the Watts Bar Unit 2 Nuclear Reactor online in 2015. Issues at the two 70 plus year old dams meant that they were not up to standards, so these issues had to be addressed before the new reactor can begin operation. A total of 104 post-tension anchors are being installed to secure each concrete structure to the bedrock below. Eighty-four are being installed at the Cherokee and twenty at Douglas. We had to drill 18 - 42" holes 49" deep at a 60 degree angle as part of the pocket for these post tension anchors. We also performed 20,000 inch feet of wall sawing for the removal of dam flood walls. this work was completed in 12 days and the concrete walls measured 12 to 18 inches thick.