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MARINA CONSTRUCTION 2000 (Pg 2)
The above picture shows marina construction from the gas dock looking east, on mid-morning December 14th. In the center, Fitzgerald Construction is assembling the second section of seawall. On the far left is the first seawall section, which has already been placed. Halfway to the left (North) Yacht Works crew and Lighthouse Construction are installing pipes,conduit, and plumbing which will be under Building 3's slab, when it's built.
(left) Looking South across the construction site. The pipes and hole on the left are beneath what will be the mechanical room of Building 3. (right) The first, northernmost, section of new seawall. A section of the North dock has been cut away and will be mated up with the new seawall before spring. On the right, note the line of steel pilings which form a "deadman" anchor. The steel sheeting of the seawall is tied back to the deadman. This anchor keeps the wall from tilting out under pressure of the tons of earth that will backfill it later.
(left) Close-up of the "deadman." This is partially buried in a trench for now, and the first of many tie rods extends out to the seawall section. Building 3 will be built above this part of the site. (right) Looking down and west at the first seawall section, you can see the tie rod and structure on the back side of the wall. All of this will be buried and backfilled after the seawall is constructed.
(left and right) The second section of seawall, after assembly on the ground, is lifted and swung into position above its intended final place in the harbor. Each piece of steel sheeting slides into the one next to it. This entire section must line up with the section already installed, and then carefully drop into place. In the foreground of the (right) picture is a drill, attached to a backhoe, that drills through the back of the seawall sections and into the bedrock of the harbor. Then steel pins are dropped in the holes, pinning the bottom of the wall in place.
(left) Visible in the full sized photo (click on the thumbnail) are cables of the crane lowering the steel. This was a preliminary "fitting." The section was lifted again and carefully mated with the section to the North. (right) After the section was placed by the crane, it was located and aligned with backhoe. This ensured it was straight and true once the pins were placed and tie rods to dead men were fixed. After these steps were complete, the section was backfilled, first with a few yards of concrete, then with rock fill. next, go to: |
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