Hi,


I do have a follow up question regarding "unrestrained" sections of buried pipe i.e. say at a buried segement close to the transition from A/G to U/G and with particular reference to elbows in this segment. Pipe code Canadian CSA Z662.
If we model the underground section using the underground modeler (and I assume this means CII uses FAC =0.001 by default)
My question is for the unrestrained section, will CII compute the stress at the elbows as per combined stress per the partial restraint clause 4.7.2.1 i.e Sh - Sl + Sb by default ?
Or will the program compute depending on whether the net axial stress is compressive and then determine if whether the stress needs to be determined as per Cl. 4.8.4 of Z662 i.e. the expansion case : Sq. root (i Mb² + iMt²).
Thanks !

Appreciate any help !

regards

Hi Richard, Dave,

appreciate your help here.

thank you