what do you think about such an awry line?

Er, um ......

What exactly is the problem ? Are you concernd about the angle of the line or the span or the trunnion .. or what ?

Cheers

... or was it Z over M ?

shouldn't the trunnion be insulated?

i don't like it.

* a spring?- why?
* is the spring held by anything other than gravity bolts?
* looks unstable in high winds
* just looks wrong.

so there!

A very long trunnion did anybody check its stresses or its stresses on the parent pipe???

If the trunnion is on an elbow did the elbow get the appropriate SIF increase?

Is the long riser held on top by a support????

For long trunions we understand the need for local stress check.

But even for large bore, say 100"NB piping, some people insist on putting anchors/guides in centreline or ask to consider eccentricity of shoes in piping stress analysis. But, when people can consider beam type element in Caesar-II and where the shoe eccentricity is quite small lengthwise, isn't it useless to consider the same in Caeser-II ? WRC-107/297 check for such shoe can't be accurate either. If some has resource/need for FEA analysis the same, the same can be done for some typical standard design of such shoes.

Is my approach resonable ? Except for very critical piping, too much detailing of piping stress analysis of routine ones like modelling the same in PDS/PDMS - is it right - that too in not-appropriate softwares by people who can't distinguish the difference between 3D modelling & stress analysis ?

regards,

sam