Special Engineering Projects

The Wharf Restaurant Seawall/Retaining Wall

The Wharf Restaurant seawall was a challenging engineering and construction project involving the replacement of an old wooden-plank wall. The design of the new wall was a collaboration between Origin Construction and Dennis McCroskey of A&E Architects and Engineers Associated of Mendocino.

Involving over 250 yards of reinforced concrete, the wall is anchored to large concrete "deadmen" located approximately fifty feet away beneath the restaurant's parking lot. Directional boring equipment was used by Royal Electric of Sacramento to bore tunnels from the parking lot through the formed wall. The tunnels were lined with conduit through which connected lengths of threaded steel rod were run from plates at the surface of the wall to the anchors (see photos below and to the right).

The wall is over two feet thick in its top section and a foot thick below. After securing the wall to the anchors, the trenches for the "deadmen" were filled and paved over, so most of the structure is completely hidden from view.

A view, beneath the Wharf Restaurant,  showing the threaded steel rods and steel plates which anchor the sea wall.

The southwest corner of the seawall. Most of the wall is hidden beneath the restaurant.

A closer view of the threaded steel rod and steel plates, which are coated against corrosion.

The forms for the southern segment of the wall.

The crew that build "the great wall".


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