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Thanks for the replies. I did some more googling and found links to an article/paper that contains two methods to solve the problem and seems to do the trick. http://www.air-dispersion.com/feature2.html A little bit of excel work and voila. Cheers

Hi, Hoping that someone can give me some guidance on the following: How would I calculate the theoretical pressure loss from a pressure vessel that would occur over a 24hour period through a pinhole leak based on the following starting conditions: Starting pressure: 700psi Medium under...

Thank you both. I thought that the beam formula would be the correct starting place but wasn't postive. Greg, They say there is no such thing as a stupid question so I'll go ahead and ask mine... What forumla did you use to calculate the minimum radius for your example pipe? Thanks

Hi All. Another question for you. Is there a rule of thumb for the natural sag that a steel pipeline can experience. In otherwords if I have a 16" pipe what would be the minimum radius that the pipe could take as it contours to the trench bottom? Thanks

Hi all, Thanks for your responses. Yes, we've had many conversations with the client on this matter and have explained that this is not the standard way mainlines are designed (admittedly this is a fairly short piping run which is why this is feasible). The client wants to have...

Trying to satisfy my curiosity. Has anyone designed a petroleum pipeline where the client has required that it be designed and built to have specific grade with predetermined low points?

Thanks Guys, My question derives from that fact that the CSA code is vague and I am trying to understand how to determine if: a) The straight pipe we order has enough wall thickness so that if we send some joints for bending it will still have the minimum wall thickness required for the...

Hello all, Can anyone explain the procedure to be used for hot bend design when designing a pipeline under CSA Z662-03?

Whew, took a while to get back to you all. Thanks again for the help. After some phone calls, internet searches and speaking with a helpful geotechnical engineer I found references to research papers and industry publications that established E' values for unshrinkable fill. In summary...

Thanks very much. I'll take a look at these!

Does anyone know or recommend what modulus of pipe embedment should be used in the spangler equation for buired pipe deflection when the embedment and backfill material will be unshrinkable fill.