I am following CRSI guidelines for edge distance, and using their minimums. Their guidelines use 3000 psi concrete, but I'm specifying 4000 psi concrete, so these distances should be conservative. It's interesting to me that there are no readily accessible design guides for pilecaps. Everything...
You know, I'm really questioning the decision to make them fixed. I think it was originally decided due to the equipment related to the silos, and likely some faulty preliminary modeling. Looking at the reactions vs the applied loads, I've got some piles that are taking more than their fair...
Slide Rule Era: I had already added studs to the piles to pick up the uplift loads. I'll review that document. Thanks for adding it.
TLHS: I have both 12" and 16" HP sections. I can probably get around the 12" HP sections, but the 16" HP sections meet that I'll certainly be around 18" bar...
OK. I'm in agreement about putting the bottom mat at the bottom with standard cover. I'll lap additional bars around the piles.
Agent666: I'm having a little trouble visualizing your comment in the first paragraph. Punching shear is a separate matter than developing bending moment in the top...
I am designing multiple pile caps supporting round storage silos to bear on top of steel H-piles. Due to the lateral loads, I would like to consider my piles as fixed at the top for the connection to the pile cap. I've followed a Colorado DOT standard for the embedment of my H-pile into the pile...
