Chapter 9 of 24 · Cellular Cofferdams
TVA Monograph No. 75, Chapter 8: Removal
This chapter covers the removal of cells at the end of a project. TVA used barge-mounted equipment for pulling the piling, including a derrick with an A-frame, and the monograph describes how the barge was reinforced with watertight bulkheads and truss sections to take the load.
It also touches on how removal fits into the staging of the work, how restrictions and streamflow affect navigation during the stages, and how the condition of the sheeting afterward affects whether it can be reused. If you plan to pull a cell, this chapter shows what equipment and preparation were needed.
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