pros/cons drilled pier vs spread footing
pros/cons drilled pier vs spread footing
(OP)
if i have 2 options that i can use, which will be preferable per pro and cons.
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pros/cons drilled pier vs spread footing
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RE: pros/cons drilled pier vs spread footing
RE: pros/cons drilled pier vs spread footing
RE: pros/cons drilled pier vs spread footing
Footing:
Pro: easy to construct, generally less concrete, can be excavated and backfilled with equipment already on site.
Cons: Subject to vertical movement, require lots of excavation (depending on frost depth), low capacity (depending on bearing material)
Friction Piles:
Pro: Negligible vertical movement, generally high capacity (depending on skin friction)
Cons: More concrete than footings, require specialized equipment to drill
There are more pros and cons for each but that's my quick version.
In the end, the biggest factor in which foundation type to choose is the soil characteristics. If you're in a 60 foot deep chunk of sloppy clay, then piles are a must, if bedrock is near the surface, then pads are a no brainer.
There's no perfect solution that will encompass all situations.
RE: pros/cons drilled pier vs spread footing
Much of it will depend on the quantity. If you only need 1 or 2 I'd probably go with the spread.
You could always detail both and let the contractors bid them based on which they prefer.
RE: pros/cons drilled pier vs spread footing
7 feet isn't very deep for a friction pile. Is there a chance of frost? How deep?
RE: pros/cons drilled pier vs spread footing
RE: pros/cons drilled pier vs spread footing