My suggestion is to talk to the Geotechnical Engineer and have him tell you what you should be doing if you are unsure. Right or wrong, I usually use the ASD load combinations in ASCE 7 and use which ever combination controls. Sometimes Geotechs let you use a larger bearing pressure when you are...
The AASHTO LRFD 2017 code is confusing me when it comes to designing concrete at supports and seems to contradict itself.
Section 5.5.1.2 "Design Methodologies" talks about needing to design B and D regions with different methods because of how the stresses goes through a beam at that...
I'm impressed that I got such a quick response! Thanks! It looks like I can interpolate between the values easy enough to find 25 and 26 strands. I'll see if I can find this manual online somewhere.
I am doing a load rating on a bridge built built in 1970 with post-tensioned tee section girders. Take a look at the attached as-builts. The tendon types are marked 26GSP, 25GSP, and 24GSP. Does anyone know what these mean? I want to know the strands area and ultimate stress so I can verify the...
There is quite a bit of honeycombing on these pipes but I would expect that this is because a dry cast 36" diameter class IV RCP is difficult to get good consolidation.
It turns out on this particular project there was a mistake by the manufacturer as they usually provide a watertight coating...
If in the shop they seal the 2 pipes at the ends for their tests they would miss the problem we are having. I will have to ask them about their testing procedures to see if this is the case. Regardless if they use a regulator to manta in the pressure in the shop would a small amount of internal...
Performing a joint test on a 42" RCP in the field is giving issues where the water is leaking out of the pipe from the inside of the pipe. Basically the water is traveling along the reinforcement inside of the pipe and finding small voids to come out of. So far there has been no water found...
