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Embedment of timber pile into pile cap

Embedment of timber pile into pile cap

Embedment of timber pile into pile cap

(OP)
Hello Everyone

I am designing a pile cap (70' dia. and 2' deep) with timber pile type B (capacity 40 kips/pile) for a tank with total load of 10000 kips. I am using total of 261 piles as per arrangement.

What should be the embedment depth (inches) of timber pile into pile cap. Thank you in advanced

RE: Embedment of timber pile into pile cap

You may have a local code, but unless you have uplift and shear requirements, almost any dimension will transfer the loads. I trust you are taking into account group action (capacity per pie) is not the same as individual pile capacity not in a group..

RE: Embedment of timber pile into pile cap

The traditional embedment of a timber pile into a pile cap is 4" to 6". Refer to oldesguy's post if you have uplift or shear requirements. Note that the concrete needed for pile embedment does not "count" towards the required structural thickness of the slab. For example, if you need a slab 2' thick for structural reasons, the slab will need to be at least 2'6" (total) thickness for piling embedded 6".

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