I thought about arches and like the idea (aesthetically mostly). But realistically, logistics make the use of elaborate cast-in-place work in this somewhat remote location not ideal. Precast Girders on simple piers should be cheaper.
Anyhow...it appears we're going with a symmetrical 3-span...
@paddingtongreen (responded while I was posting)--yes, the girders will be precast. We haven't worked out the connection yet (not completely settled on I-Girders), but my boss tends to go with continuous supports.
I suppose the biggest issue is whether the asymmetric layout produces any...
Thanks for the input. I don't think aesthetics are of comparable importance to cost, so it should be fine. I'll make sure to check uplift and temperature.
My AASHTO I-Girder concrete bridge requires a minimum of two spans due to fabrication and transportation issues for longer girders. The bridge spans over a rain runoff path and it is not desirable to put a pier at the middle of the runoff due to concerns about permitting and jurisdiction in a...
Thanks. I'm not designing the prestressing or the girder, just the stirrups and needed to know how many strands to use in calculating bursting resistance.
The designer typically doesn't use debonded strands and I wanted to check why they are used since Aashto Bridge design guidelines required...
What is the benefit of debonded strands in reinforced concrete beams?
Pretensioned steel strands are commonly used to prestress concrete members. These are bonded along the lengths where the strength is required and often debonded in the remaining region.
Currently my girder design leaves all...
