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calculating pipe strength required for a road crossing

calculating pipe strength required for a road crossing

calculating pipe strength required for a road crossing

(OP)
I am looking to see if anyone knows the calculation to calculate the pipe strength required when you have to cross beneath a roadway or railway tracks.  For example I have a 6" HDPE DR17 (100 psi) pipe that needs to go beneath a set of tracks.  The casing pipe has to be 12" but I am not sure of what the rating should be (i.e. DR17, DR13.5, DR11, etc). I know that the calculation has something to do with taking into account the depth of cover and the weight of that depth of cover including a standard weight that takes into account the weight of traffic.

RE: calculating pipe strength required for a road crossing

do a google search for Cooper E-80 loading.  You can probably download the Cooper loading from the railroad's website.   

RE: calculating pipe strength required for a road crossing

Check out "HDPE pipe Under Railway Loading" see page 4 of C/E engineering other topics area.

RE: calculating pipe strength required for a road crossing

Have you requested the permit application from the R&R company yet? Many times they will tell you what type and class casing pipe will be required.

RE: calculating pipe strength required for a road crossing

Look up the Spangler formula.  

Richard A. Cornelius, P.E.
WWW.amlinereast.com

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