Space Between Concrete Piles
Space Between Concrete Piles
(OP)
Technically when doing underpinning under grade beams, how far is maximum between piles supporting grade beams? Is it the same for piles supporting footing? I, not a PE, heard the maximum is 6 ft, others say 8 ft.






RE: Space Between Concrete Piles
RE: Space Between Concrete Piles
RE: Space Between Concrete Piles
RE: Space Between Concrete Piles
Another question. After pushing the piles to get a desired load, the installer bolted the steel piles into the brackets. Is it strong enough to hold the load or piles must be welded to the brackets? They are 16"x12" grade beams. My house is one story. Interior load = 1173. Exterior load = 941. They use gal. wire to tie up the re-bar steel at slab and grade beams. I was thinking they would be welding.
RE: Space Between Concrete Piles
The pile spacing is a function of the bracket strength, the available pile capacity, and the load capacity of the grade beam. All need to be checked. The smallest spacing should be used.
Was the design prepared by a professional engineer? If not, get one who is familiar, no, make that "very experienced" with pile design and underpinning design. Familiar isn't good enough.
RE: Space Between Concrete Piles
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RE: Space Between Concrete Piles
RE: Space Between Concrete Piles
RE: Space Between Concrete Piles