Coldcrete has successfully implemented and completed a multitude of concrete cooling projects around the world. Here are some featured projects.
Charleroi Locks & Dam, Contract 1
Charleroi, Pennsylvania, USA 2005
Developer: Trumbull Brayman JV
Project Type: Custom Concrete Cooling System
Project Specs: 150 yards3 per hour and 65°F placement specification
The new Charleroi Locks, with both lock chambers 84’ wide by 720’ long, are an essential component of the “two-for-three” replacement plan that will lower the downstream operating pool by 3.2’ after the removal of Locks and Dam 3. This pool lowering, driven by major structural problems at Locks and Dam 3, will result in major impacts to existing Locks 4. Major impacts to Lock 4 include differential loading on the lock walls increasing to unacceptable levels and water depths over the lock chamber sills and struts becoming lower than required.
Saluda Dam Remediation
Lexington, South Carolina, USA 2003
Developer: Barnard Construction Company
Project Type: Custom Concrete Cooling System
Project Specs: 600 yards3 per hour and 65°F RCC placement specification, 60°F facing concrete placement specification
Saluda Dam is a 7,800 ft. long, 211 ft. high earthen dam built in the 1930’s. The Dam is located just upstream of Columbia, South Carolina, and impounds the Saluda River to form Lake Murray, a leading source of water, electric power, and recreation for the city of Columbia. The construction project includes placement of 1.3 million cubic yards (2,300 ft. long) of roller-compacted concrete in the center of the dam in between the original dam and existing water/electric plants at the toe of the dam. In addition, 3.5 million cubic yards of rock fill will be used to make up a 5,500 ft. long section of berm on the north and south ends of the dam. A large excavation will be created at the toe of the existing dam to provide a suitable foundation for the earth and concrete backup dam.
Chickamauga Lock Cofferdam
Chattanooga, Tennessee, USA 2007
Developer: C.J. Mahan Construction Company
Project Type: Custom Concrete Cooling System
Project Specs: 100 yards3 per hour and 70°F placement specification
Replacement of the deteriorating Chickamauga Lock will be a massive project that will require the excavation or dredging of approximately 123,000 cubic yards of substrate and the blasting and removal of approximately 181,000 cubic yards of rock. Construction of the lock will require almost 300,000 cubic yards of concrete, 31,1214 cubic yards of gravel fill, and a variety of precast beams, rebar, and other components. The proposed work consists of constructing a 110 x 600 foot or a 75 x 400 foot lock at Chickamauga Dam. The proposed lock would be located on the riverside of the existing lock and downstream of the existing dam.
Big Tujunga Dam Seismic Upgrade
Tujunga California, USA 2008
Developer: Shimmick Construction Company
Project Type: Custom Concrete Cooling System
Project Specs: 180 yards3 per hour and 55°F placement specification
The seismic rehabilitation currently planned for the 77-year old dam will last three years and cost $88 million. Big Tujunga Dam is 505 feet wide at the crest and 73 feet thick at the base. The new construction will double its thickness and enclose the elevator.
