Pipe Bridge
Pipe Bridge
(OP)
My firm is designing a pipe bridge crossing a railroad and a local road. Will the AASHTO bridge code apply in this situation? I am confident in past projects (mostly in plants) the code was not used. Simply LRFD or ASD. I would feel much more comfortable using the code and feel it is necessary. What do you folks think??






RE: Pipe Bridge
If you were not crossing a road or a railroad or anyone else's right-of-way, then I don't think AASHTO would apply, and I would design based on the local building code using AISC iof steel.
RE: Pipe Bridge
Used only ASD, railway company furnished clearance requirements, and engineering judgment. Then applied my PE seal to the documents. Before construction, plans were reviewed and accepted by the railroad company without comment.
www.SlideRuleEra.net
RE: Pipe Bridge
RE: Pipe Bridge
RE: Pipe Bridge
RE: Pipe Bridge
RE: Pipe Bridge
RE: Pipe Bridge
You should also check with your state DOT requirements for vertical and horizontal clearances needed. Each should be able to provide you with the required vertical and horizontal clearances that are necessary.
In my experience the railroad usually has fairly restrictive requirements when it comes to building over active tracks. They will also most likely limit construction activities so you should coordinate with them early to see what they will allow.
RE: Pipe Bridge
RE: Pipe Bridge
RE: Pipe Bridge
Going the Big Inch!
http://virtualpipeline.spaces.msn.com
RE: Pipe Bridge
Design the structure for all applicable loads including any thrust loads caused by turns (elbows). Don't forget temperature, especially if your pipe is of a different material than the supporting structure.