The commonest top cap contains a 2x12 or 2x15 laid size-smart together the very best from the bulkhead and nailed or screwed to your tops of your wales. Drill clearance holes with the 2x10s, then bore pilot holes in to the concrete having a hammer drill. Push 3-inch masonry screws https://shoreprotectteam.com/bulkhead-construction-and-repair-cost-in-texas/