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Timber Pile Grade Beam Connection

Timber Pile Grade Beam Connection

Timber Pile Grade Beam Connection

(OP)
Does anyone have a good connection detail for connecting a 12" wide grade beam directly to a 12" timber pile? A 4' deep grade beam with 2' deep cap gives a depth of 6'.  Groundwater depth is 5' below grade and I do not want to form caps in the wet and tremie concrete. Foundation is for multi family residential construction.  Cost savings for forming and pouring 200+ pile caps would be significant to say the least.  Are caps actually required by code?

Thanks,
RP  

RE: Timber Pile Grade Beam Connection

I have been doing pile caps for 25 years and would not recommend your proposed pile to beam connection. I not sure if the code specifically addresses your proposed detail. I would go with a standard typical pile cap and "DAP" the concrete beam ends to meet the elevation. All your bottom of concrete would now be at elevation -4 ft. What kind of loads are on your grade beam anyway and what is your timber pile capacity??

RE: Timber Pile Grade Beam Connection

Do you have any significant uplift?  I usually use straps secured to the sides of the timber piles and embed these into the concrete

Dik

RE: Timber Pile Grade Beam Connection

I have seen steel rebar dowels used with smaller piles and wider pile caps in LA in residential applications.

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