Hello peeps.

I'm embarking on using Caesar II for Analysis as per AD Merkblatt 2000
This references B31.3 so that's ok, but the pipework, mataerials and fittings are Din.

Ive had lots of good suggestions from my collegues, but am wondering if you guys have any tips or know of any pitfalls to watch out for.

I'm envisiging the Din Materials to be the tricky bit.

Comments appreciated.

German code. They like ID control piping. Pipe WTH used are different to schedule piping. Most of the OD (for OD pipes) are similar/same to schedule. Watch for DN100. Your thicknesses will be less than to ASME design. Check bends. Old German code allowed thinner extrados than straight pipe. No weldolets that I know of.

Current materials are in EN codes. For power piping materials are in EN 10216-2.

In actuality the intrados need more metal than the extrados for pressure design hence it probably is just fine as far as the elbows are concerned

... and CAESAR II Version 5.10 has a number of "EN" materials available from the Material Database.

Yes. FEA says that on uniform thickness inside has higher stress. In real life you need to test the extrados. And bend/elbow has a habbit of failing suddenly, e.g. not leak before failure. Same as long welded pipe. I assume the higher stresses in extrados are from "thinning" and external forces.

The old German code was handy. You could have induction bends made out of same thickness as the straight pipe without too much of a problem.