Reinforcement in drilled piers
Reinforcement in drilled piers
(OP)
I have been requested to design drilled piers that are to support individual columns. The 24' long piers are above grade 4' and below grade 20'.The pier is 24" dia with #6 verts along with #4 ties. My question is how others would look at the min tie spacing and min rho for vertical bars? I am leaning towards using a 0.5% rho for the vertical bars and 18" c-c spacing max on the ties. Any recommended references or suggestions on this type of application?






RE: Reinforcement in drilled piers
Using the "architectural column" concept for the pier would be fine as long as you assume the smaller column capacity per ACI. I would simply meet the ACI column tie requirements for the segment above ground (and perhaps 4 feet below grade as well) and let the pier below that simply be designed as a pier.
RE: Reinforcement in drilled piers
RE: Reinforcement in drilled piers
BA