temporary bridge...full design?
temporary bridge...full design?
(OP)
I've been doing small (less than 75') temporary bridge designs for contractors doing DOT bridge projects. I was wondering how in-depth most temporary bridge designs are. I tend to want to treat it as a permanent structure (performing all the LRFD checks), however in reviewing past designs, it seems others take short cuts such as not performing code checks (just following beam theory, more or less). Also, is it common to design every detail such as diaphragms, stiffeners, connections, bolts, welds, etc or just use standards/typicals. I will add that I am not utilizing any software, nor were the other designers.





RE: temporary bridge...full design?
Your design has to comply with the requirements of AASHTO and the DOT that the contractor is working for. I think LRFD is a bit too much for a temprary bridge, particularly if it might only be in place for one season. We've designed several in the last few years and the DOT has usually been flexible on the details.
The following is a link to NYSDOT Standard Specs, click on Section 619 (which is MPT), it has a spec for temporary bridges.
https://
RE: temporary bridge...full design?
Regards,

Qshake
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RE: temporary bridge...full design?
Qshake: I have 2 guides from AASHTO on Temporary Bridge Works (Design Guide Specifications & Construction Handbook) but both deal primarily with temporary structures used in conjunction with constructing a bridge (temporary shoring, formwork, etc) Is there another publication dealing specifically with temporary bridges?
RE: temporary bridge...full design?