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The County of Los Angeles had
been fighting a loosing battle against mother nature, when LA County
Parks and Recreation Department had repeatedly repaired a beach access
road only to
see it washed away by the onslaught of each winters crashing wave.
Finally, they decided to repair the road to survive the elements, and to
save money. The design team got creative by borrowing materials used in
marine construction, and creatively applied them for a structure that may
finally survive the elements. August Construction installed the
beams and sheets for Padilla Paving, the general contractor.
The engineers chose FLAT
SHEETS, commonly used for cofferdams and cutoff walls as the lagging and supported these
with HP type beams driven into the stiff claystone bedrock. To anchor
this wall, they took a waler and tied it by way of a tie-rod to a row of
independent "U" type sheets installed across the other
side of the road. At the base of the road, they made a rectangular
box similarly constructed with flat sheets, HP beams and tie-rods and much
like a bridge abutment, to assure perfect stability for the wall for the
long term. And since the sands will be washed up to the road and
sometimes wash away from the road (revealing the wall), it's further
protected and dressed up with 4x12 treated timber at the face.
I suspect this road's going to
be there a while. Sorry mother nature.
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