Hi,

My question is about:
"An exception to this rule is the case of a vertical element. In this case, the local “x” axis is still aligned in the “From - To” direction. However, you can’t “cross” a vertical element into global “Y”, so the local “y” axis was arbitrarily assigned to align with the global “X” axis."

which is a quote from the CII Technical Reference Manual.

I have element 1000-1010 in the +Y direction (FROM-TO) and element 1215-1220 in the -Y direction. According to this quote, the local Y restraint should be the global X restraint in both cases. As one can see in the example below, this is not the case. Can somebody explain this to me?

LOCAL RESTRAINTS
1000 -5810 50 12208
1215 -1701 -251 433

GLOBAL RESTRAINTS
1000 -12208 -5810 -50
1215 -251 1701 433

Thanks in advance,

R Fransen

Sorry to take so long on this one ...

I can't match your results for the 1000-1010 element. If I build this model, and put a tip load on the free end in the glboal "X" direction, the results confirm the text in the CAESAR II Technical Reference Manual.

Hello everyone,

By looking at the static output: restraint result, how do I know that the forces and moments at each node is doing good, not high? Is there any allowable limit value for both restraint and moment?

Is there any allowable value for the restraint and moment?

Please advice.

Thank you very much.

Hafiz

There are no hard limits for nodal forces/moments. Acceptable magnitudes are dependent on the pipe size, material, and support design specifics.