Patent ID: 8545129

Claim:
A cofferdam module, comprising: a first side panel having a height; a second side panel having a height; a first plurality of outer support members coupled to an outer side of the first side panel, the first plurality of outer support members comprising no more than four horizontal beams; a second plurality of outer support members coupled to an outer side of the second panel, the second plurality of outer support members comprising no more than four horizontal beams; a first plurality of inner support members coupled only to a bottom half of an inner side of the first side panel and a bottom half of an inner side of the second side panel, the first plurality of inner support members comprising no more than four support beams, wherein each of the first plurality of inner support members has a length that is greater than the height of the first side panel and also greater than the height of the second side panel; and a second plurality of inner support members coupled only to a top half of the inner side of the first side panel and a top half of the inner side of the second side panel, wherein the first and second pluralities of inner support members are different in form, and wherein each of the first plurality of inner support members is at least substantially parallel to each other and also to each of the second plurality of inner support members.