G. Archibald,

Dave Diehl suggests just flexibility factor k. Not SIF.
SIF please look at these articles:

Stress indices for straight pipe with trunnion attachments

http://www.epriweb.com/public/TR-110162.pdf

Stress Indices for Elbows with Trunnion Attachments

http://www.epriweb.com/public/TR-107453.pdf


Edited by mav (08/29/08 06:39 AM)