Drainage pipe - Railroad Liveloads
Drainage pipe - Railroad Liveloads
(OP)
I have already determined that the liveloads over a drainage pipe (part of bridge drainage) that crosses a railroad is approx. 19psi.
The pipe I want to use is a 6in. or 8in. PVC SDR18. This might be very simple but how do I determine if this pipe can withstand the load?
Thanks
The pipe I want to use is a 6in. or 8in. PVC SDR18. This might be very simple but how do I determine if this pipe can withstand the load?
Thanks





RE: Drainage pipe - Railroad Liveloads
RE: Drainage pipe - Railroad Liveloads
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: Drainage pipe - Railroad Liveloads
Now, I also found that ASTM through various product standards has recommended a Maximum Allowable Deflection Limit of 7.5%.
To find the deflection and the loads imposed on the pipe at different depths, I downloaded from UNI-BELL.ORG the software:
"external load design for uni-bell flexible conduits."
Great tool to compare your hand made calculations.
I hope this helps
RC
RE: Drainage pipe - Railroad Liveloads
Books you may also consider are Buried Pipe Design by Moser or Structural Mechanics of Buried Pipelines. I am sure AWWA have similar design standards however AS 2566 is very comprehensive as a design standard and guide.
What you are looking at is a combined soil/pipe structure. Many railway organisations will insist on a sleeve. Beware if the railway is electrified stray currents could cause the failure of the steel inside 6 months. You may need to electrically isolated with a good coating.
The GAS Research Institute/Cornell University did a great deal of study. Their final report "Technical Summary and Database for Guidelines for Pipeline Crossings Railroads and Highways GRI-91/0285 is definitely worth the investment.