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Multiple Barrel Box Culvert

Multiple Barrel Box Culvert

Multiple Barrel Box Culvert

(OP)
Hi,

I'm needing some help designing some culverts. I'm designing multiple barrel culverts formed by multiple single barrel culverts set side by side having the joint between them grouted, as in the following link:
http://www.fdot.gov/roadway/DS/12/IDx/00291.pdf

Is having the culvert side by side situation worse than having a single barrel culvert under a determined fill height? I have already designed the simple barrel culvert, earth pressure on both sides, and would like to know if there´s any provision allowing to set the culverts side by side with no extra analysis. In case not, does anyone have some recommendations on how yo analyse, or hypothesis to be made on this situation?

Thanks!!

RE: Multiple Barrel Box Culvert

I've always considered that a multiple barrel box culvert with grout or flowable fill placed between them as superior that a single culvert barrel with fill on all sides. No extra analysis steps required.

Professional Engineer (ME, NH, MA) Structural Engineer (IL)
American Concrete Industries
https://www.facebook.com/AmericanConcrete/

RE: Multiple Barrel Box Culvert

(OP)
TehMightyEngineer thank you very much! Anyone else has experience on this issue? how do you design multiple single barrel culvert usually?

RE: Multiple Barrel Box Culvert

try using (free download) CANDE software

RE: Multiple Barrel Box Culvert

Quote (LQQD)

Is having the culvert side by side situation worse than having a single barrel culvert under a determined fill height?

From "Concrete Culverts and Conduits", 1941:



A multiple barrel culvert will tend to collect debris at the partitions between the cells - more clean-out maintenance than a single barrel culvert.

www.SlideRuleEra.net idea
www.VacuumTubeEra.net r2d2

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