Question regarding Box culvert formula in AREMA
Question regarding Box culvert formula in AREMA
(OP)
I am checking a existing twin cell box culvert for new loads. In AREMA there are formulae given for moment calculations. Moment of inertia of box culvert top slab gross section is equated to Isubscript S. Moment of inertia of box culvert wall gross section is equated to Isubscript W. I am confused as to how to calculate them. Are they about center of gravity of the twin cell culvert or are they about c.g. of the slab and wall repectively. Can somebody shed light on this topic please.






RE: Question regarding Box culvert formula in AREMA
I vote for the centers of gravity of the slab and wall respectively.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Question regarding Box culvert formula in AREMA
RE: Question regarding Box culvert formula in AREMA
Maine Professional and Structural Engineer
American Concrete Industries
www.americanconcrete.com
RE: Question regarding Box culvert formula in AREMA
RE: Question regarding Box culvert formula in AREMA
A bit off topic, but what program do you use to design AASHTO box culverts? Do you have in house spreadsheets or are you using a program like BRASS Culvert or the TxDOT in house program? Do you ever load rate box culverts?
RE: Question regarding Box culvert formula in AREMA
Maine Professional and Structural Engineer
American Concrete Industries
www.americanconcrete.com