I ended up getting more information on the governing code from the light rail officials. Apparantly, when running the derailment load you are allowed a lower load factor for the live load with impact, instead of magnifying the allowable. I also put straight strands in the top, which helps...
I have done p/s beam designs by hand, I have never encountered a loading condition of this magnitude nor have I had much experience with running CONSPAN to know enough about what the program is spitting out. I really needed some guidance, I should say, for debonding the strands once the...
It is an AASHTO Type IV Beam. The stresses that I am failing at are at Final 1. I need some meaningful guidance to debonding manually, I have figured that CONSPAN does not yield the best results. I am not that familiar with CONSPAN and not too experienced with designing prestress concrete beams...
I am analyzing a 2-Girder 90 foot span with train loading. The worst-case beam seems to work as I increase the tendons everywhere except for allowable stresses in the bottom flange from about 0.7L to Midspan. If I allow CONSPAN LA to "Auto Debond" the stress is decreased, but not enough. Any...
