Based on the current height (“reveal”) of the sheet piles, why does it appear that Stage 8 will have more flood protection than Stage 7?
Based on a visual inspection, it is reasonably to assume that Stage 8 has or will have more flood protection than Stage 7. However, this is not the case. The contractors on Stages 8 and 7 had the option to build a Pre-Cast Sheet Pile Floodwall or a Cast-in-Place Concrete Floodwall. On Stage 8, the contractor decided to use the Precast option where the current top of the sheet pile will be the final elevation of the floodwall with precast concrete panels attached to the landside face of the sheet pile. On Stage 7, the contractor decided to use the Cast-in-Place option where the current top of the sheet pile will NOT be the actual top of the floodwall. Several feet of reinforced concrete will still be added above the top of the sheet pile to reach the final elevation of floodwall. During construction of Stages 7 and 8, the existing level of flood protection provided by the existing berms is being maintained by the contractors.
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