Pile Supported grade beam load distribution at piles
Pile Supported grade beam load distribution at piles
(OP)
Hi,
Attached is a foundation plan for grade beam which is supported by piles. You will see the the column load ( Pmax) lines with center of one the piles at Section A. I am trying to take the advantage of 3 ft thick grade beam and use springs for pile supports. Instead of applying 100 % of the Pmax to one pile, Has anyone an opinion or a reference that explains What percentage of Pmax can be distributed to the other pile which is 3.5 ft apart?
Thank you
Attached is a foundation plan for grade beam which is supported by piles. You will see the the column load ( Pmax) lines with center of one the piles at Section A. I am trying to take the advantage of 3 ft thick grade beam and use springs for pile supports. Instead of applying 100 % of the Pmax to one pile, Has anyone an opinion or a reference that explains What percentage of Pmax can be distributed to the other pile which is 3.5 ft apart?
Thank you





RE: Pile Supported grade beam load distribution at piles
As long as the span to depth ratio does not exceed 4 I would be assuming that the grade beam is rigid and designing using strut-tie.
RE: Pile Supported grade beam load distribution at piles
I dont need to worry about the grade beam this is an existing structure foundation that i am analyzing. If i apply the pmax to one pile at the corner it exceeds pile capacity therefore i am trying to use springs for all piles or at least some to distribute some of the Pmax to the adjacent pile. If this was a new design i wouldnt worry and just applied Pmax to one pile and be done with it :) Normally we design piles according to the static distribution depending on the geometry in the pile cap but unfourtanetly if i use that results show that pile under Pmax has to take 100 % of Pmax. So as a result your conclusion is to use 100 % of Pmax to one pile ? You can also look at the attachment to see the two 3.5 ft apart piles at the corner.
RE: Pile Supported grade beam load distribution at piles