Hi all,

I need a suggestion about how to model a standard piping support (e.g SHOE) bolted to a supporting beam:

It's possible to model this kind of support as rigid anchor (ANC)?

It's correct, theorically speaking, to NOT allow rotations at this kind of support? or it's more reliable to model this support as X,Y,Z restraints and allow rotations?

TY.

It may be that for your analysis it is ok to make the assumption of a full anchor at a support. However, this is unlikely to be reflected in the real world.

Real structural steel, local supports, and pipe attachments all have some flexibility. In most piping systems, actual rotations are very small and usually less than 1 deg.

To restrain such small rotations at one point is generally not practical. Thus IMHO any single support location should only be fixed against one or more translations. Rigid connections such as mechanical nozzles are a different matter.

If you truly want to restrain a pipe fully against rotations at a support, I would utilising two support locations, resisting imposed moments as a forces couple.

Thanks MoverZ.

I solve the "rotations issue" using your advice:
"If you truly want to restrain a pipe fully against rotations at a support, I would utilising two support locations, resisting imposed moments as a forces couple."

Thanks again.