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[SEAOC] wood pile foundations

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     A homeowner asked how he could add a second story to his Malibu beach
home on wood piles between the road and ocean. The house is 40 years old. He
mentioned a similar project up the street had 200 kip load testing on 4 piles
( with sand ) recommended by the engineer ( 50 kips per pile ). This project
never happened. When i considered the volume of sand required to develope
this load it seemed unworkable, inside an existing house. Powerlines and
restricted beach access make adding new piles difficult.
     I would appreciate any information on justification of adding additional
loads to old wood piles and checking for deterioration.
    Thanks in advance.

Tom Harris , SE
Thousand Oaks, CA