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Re: prestressed piles

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Try Santa Fe-Pomeroy in Petaluma, California.

Neil Moore, S.E.
>
>
>
>     I could use the help of anyone who has experience designing prestressed 
>concrete piles. I need to design a 100 foot long pile to take 240 kips of 
>vertical load and 45 kips of horizontal load. The top 25 feet will be a 
>composite pile,  30" diameter drilled pier with conventional reinforcing and 
>the prestressed pile extending up through the composite length to the pile
cap. 
>The idea is to predrill the 30" section then drill a smaller hole for the 
>remaining 75 feet. The prestressed pile will then be driven and a rebar cage 
>lower around it for the first 25 feet. The soils engineer has given the
240 kip 
>load for a 14" diameter pile. The top 25 feet will take the 45 kip
horizontal 
>load.
>     I have been reading about prestressed piles but the information I
have is 
>not  specific and none have any thing about a composite pile. As this
project 
>is to go for a review of the 100% package in three weeks time is important
to 
>me. Any help on references which include design examples of prestressed
piles 
>would be appreciative. Additionally any pitfalls on using pile splices would 
>also be appreciated.
>
>Thanks in advance
>Acie Chance
>
>P.S.  Phone (562) 908-7411 ext. 2010
>        Fax.    (562) 908-4270
>        e-mail  achance @lacsd.org



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