what's the maximum height above grade for cast in place drilled pier?
what's the maximum height above grade for cast in place drilled pier?
(OP)
i usually use about 1' above grade but if my equipment skid is 4' above grade and say drilled pier is 7' below grade.
i'm curious how they pour this in construction.
i'm curious how they pour this in construction.






RE: what's the maximum height above grade for cast in place drilled pier?
RE: what's the maximum height above grade for cast in place drilled pier?
RE: what's the maximum height above grade for cast in place drilled pier?
If the soil can take it and the anticipated lateral deflection is acceptable then resisting lateral loads wholly through pier flexure and shear (no steel column) is easy to design and detail.
Do you have p-y curves from a geotech to do pier design?
Is an integral slab at grade or grade beams between piers possible? Either of those would help avoid having a braced or steel moment frame between grade and skid.
RE: what's the maximum height above grade for cast in place drilled pier?
Of course on structural design I can design that either of these situations will work.
RE: what's the maximum height above grade for cast in place drilled pier?
How many drilled piers do you have, 4? 400? If you only have a few, I doubt that you would see any significant difference in cost regardless of which method you choose.
Also, if you extended the drilled pier up 4' above grade, does that eliminate a trade (i.e. steel fabricator and erector)? If not, and you will be erecting steel anyway, again I say the difference in cost is negligible.
RE: what's the maximum height above grade for cast in place drilled pier?