A Contractor of mine poured the first 25 feet of a 3' dia 30' drilled pier foundation designed to support a steel lattice transmission structure before he realized the foundation was off by the correct drilling location by about a foot. Construction halted and the top 5' haven't been poured and...
I have an issue with an existing tower built in the 70's. The foundation has some severe spalling (don't know if thats a good word, but its what we call it around here...i.e. flaking deterioration of the concrete) likely due to poor air content in the mix. I have cored the foundations and...
So I'm fresh out of school and learning the transmission trade. My boss is on vacation. I'd like to come up with a solution before he gets back. I've been working on a project where a 115KV line on H structures must go under a 161 KV line and then over a bridge at a 90 degree angle and 40'...
I am digging through the ACI code D.5.2.1 (Concrete breakout strength) to see if a group of anchors can handle a massive 40K force. The answer is probably not, but I am having difficulty decipering the Ncbg formula to prove it. It looks somthing like this
Ncbg= (Anc/Anco) (Psi ec), N (psi ed)...
