Stress Analysis Methods for Underground Pipelines

I believe that you really do not need anything more. However the US Army Corps of Engineers Technical Manual 1101, "Design of Culverts and Pipes" may come in handy. I believe that the methods therein are far superior to the ASCE and American Lifelines methods for determining spring constants and axial restraint values for soils. These methods are easy to calculate and understand, basically because they make the very unreasonable assumption that soil acts like a fluid and calculate axial friction by friction factor * depth * density, completely ignoring frictional lock up of surrounding soil grains after only a very tiny slide. The Corps of Engineer's methods are based on 200 years + of experience, but do require use of a couple of semi-complicated imperical formulas. Also study the underground pipe stress analysis methods explained in ASME B31.1

PS. For welded steel pipe design, anchor blocks are only necessary because Caesar II says you need them, but that's only to allow the software work. Put them in, move them around to places where the results give no forces on the block, then erase them from the approved for construction drawings. If you can do that, then you can call yourself a pipeline "flexibility" engineer.

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Thanks for the tip, BigInch.

After a little searching I found the a download link for the Army manual:

If you can't find out how to do what you need to do in one of those manuals, you're probably making a web page.

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concrete pipes : (but for loads on pipe is suitable for any type of pipe) ACPA-American Concrete Pipes Association search for design/manuals/CONCRETE PIPE DESIGN MANUAL

steel pipes : AWWA manual M11

please fin attached a further doc for buried pipes

Books by Moser and by Watkins would be a start point.

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Very much appreciate all the helpful tips guys. All great references and I'm looking forward to working through the sited material.

Sorry for the late reply, I've been away from a computer the last few weeks (...a rare privilege these days...).

Those are great for the basics. After you get a grip on those, we'll talk about a couple of other things, like .... maybe uplift buckling. That's about the only thing that those don't address.

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I am relatively new to pipeline engineering as well. So upheaval buckling can be calculated using Palmer's equation ?