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