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Hydroelectric Power Generation

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24-MW Facility to Power 12,000 East Texas Homes

In a state known for being big in all things, and where most of the power comes from coal and natural gas, the R.C. Thomas hydroelectric power generating facility on the Trinity River near Livingston, TX, will provide an alternative energy source generated by water in Lake Livingston to eventually help power approximately 12,000 homes in East Texas.

Construction of the 24-MW hydroelectric power plant began at a ground-breaking event in 2015 by the East Texas Electric Cooperative (ETEC), and the Trinity River Authority of Texas (TRA), which owns and operates the dam and reservoir. ETEC brought in the expertise of Archer Western Construction, one of the largest and most experienced hydro plant builders in the United States.

The project’s construction involved highly advanced civil engineering techniques and structural designs which required the synergies from L.B. Foster’s sales and engineering teams to help construct this mega hydroelectric facility. L.B. Foster’s technical piling expertise in conjunction with its senior business sales team worked together with Stanley Consultants in providing detailed construction documents to Archer Western. Temporary cofferdams positioned approximately 4 stories below the outfall of Lake Livingston permitted construction of the intake structure within an open 150 ft diameter circle without any encumbrances or bracing. Several other cofferdams were also engineered and designed with the assistance of L.B. Foster’s technical team for the north and south headrace retaining walls.

Temporary cofferdams positioned approximately 4 stories below the outfall of Lake Livingston permitted construction of the intake structure within an open 150 ft diameter circle without any encumbrances or bracing.

L.B. Foster Company’s piling business and sales team continued to play a key role in the retrofit of this existing dam by coordinating and supplying just-in-time domestic hot rolled steel sheet piling to meet the stringent delivery needs for construction. “Our Atlanta, GA, office provided detailed engineering assistance to Archer Western from the beginning to the final construction layout shop drawings for one of the largest circular land cofferdams using PZC™ steel sheet pile,” commented Richard Morales P.E., Director of Engineering. The construction project involved supply of approximately 2,600 tons of sheet piling, manufactured by Gerdau’s Petersburg, VA facility. The steel sheets were then transported to L.B. Foster’s Petersburg yard to be paired and water-proofed prior to being shipped to the construction site in Texas. Pairing and water-proofing the sheets required using 535 ft of welded connectors and applying 16,000 ft of sealant to the ball and socket interlocks on the sheets.

 

PZC™ is a trademark of Gerdau.

lbfosterus en 13 February 2019 news/details/2019-02-13-lb-foster-supplies-rc-thomas-hydroelectric-plant