underground Anchor and Guide sizing

Allstressedout

I am working on the design of a direct burial underground steam line and am having trouble finding appropriate literature for anchor and guide sizing parameters. Typically, I would size the anchors to withstand the force induced by a fully restrained line, but site conditions will not allow for the anchor sizing I have specified. I am having difficulty determining the resulting spring force at the expansion loops and 90's caused by the expansion of the steam lines. Can anyone point me in the right direction?

Tony Conner_2

Direct-buried Steam Lines

I've never seen anybody use expansion loops with a direct buried steam system, and I'm not sure how you could make them work, once you backfill. I've used manholes - spaced as much as 400 feet part - that contained expansion joints, drip-leg/trap assemblies, isolation valves, etc.



What's the operating pressure, and how long is your run?