RE: A question to the CAESAR

I know someone that knows CAESAR a little bit, and he thinks that the subscript "1" applies to the initial stiffness of the buried restraint, while the subscript "2" refers to the post yield tangent stiffness. Fy is the point where the program changes from K1 to K2. The American Lifelines Alliance web site has good information on this topic and as I recall there was a fairly well-written portion in the CAESAR user's guide covering the topic of buried pipe. The CAESAR buried pipe modeller will estimate these values from general properties such as undrained shear strength, etc. but the user is responsible for the accuracy of the resulting property estimates.

Establishing values to use for K1 and K2 for buried systems and in particular for mixed soil types is a subject of much past, and some present study.

From: <a href="/group/PipingDesign/post?postID=uMdYe3YSutIs10BsZXipwVXzCZUQ22YhxjAw3JWGDEKSN6wRU3s4DfRbUeP-YpThgGT3xGS_hLSKNyc1e25NOipbDEs">PipingDesign@yahoogroups.com</a> [mailto:<a href="/group/PipingDesign/post?postID=uMdYe3YSutIs10BsZXipwVXzCZUQ22YhxjAw3JWGDEKSN6wRU3s4DfRbUeP-YpThgGT3xGS_hLSKNyc1e25NOipbDEs">PipingDesign@yahoogroups.com</a>] On Behalf Of Safrizal Rizal
Sent: Saturday, December 08, 2007 3:30 AM To: <a href="/group/PipingDesign/post?postID=uMdYe3YSutIs10BsZXipwVXzCZUQ22YhxjAw3JWGDEKSN6wRU3s4DfRbUeP-YpThgGT3xGS_hLSKNyc1e25NOipbDEs">PipingDesign@yahoogroups.com</a> Subject: [PipingDesign] A question to the CAESAR

Hello every one

Can anyone help me please?
I just have learned piping stress analysis and now I tried to calculate flow line from wellhead platform to buried line The calculation of buried pipe use restraints type X2, Y2 or Z2 as model soil support in the piping input CAESAR II The problem is in the restraints type X2, Y2 or Z2 found K1 defined as restraint stiffness, K2 defined as the gap and Fy defined as MUfriction  coefficient
The question is how we destine numerals of K1, K2 & Fy section Is there defined provision for this case? If there is someone have known CAESAR program please let me know

Thanks to all

[Non-text portions of this message have been removed] Received on Sat Dec 08 09:47:00 2007