# Thread: Article: pipeline calculations

1. Member

Join Date
Jul 2007
Posts
47
Thanks
0
Thanked 0 Times in 0 Posts

## Article: pipeline calculations

You can view the page at

[This link Point to another website Only registered and activated users can see links.]

• Spons Circuit advertisement
Join Date
Always
Posts
Many

• Member

Join Date
Sep 2008
Posts
29
Thanks
0
Thanked 1 Time in 1 Post
hi kunal ,
here is what I do in this job.
first you must to complete caesar II anlyze.
hoop stress, displacement ..
with caesar you can have vértical movement ( displacemnt in + y ) , ususually it's less than 0.05 metres.
caluclate the axiale compressive force...
calculate allowable axial stress applying vom mises criteria
and you must ind allowable axial stress < pipeline material yiled stress
fin the imperfection length using an initial imperfection less 0.3 or 0.25 meters
after this calculate Weight of cover required W
calculate weight of soil done at field ,( you have the soil density of of soil and the depth of pipe, and the widh of the dich..
compare the soil required with the weight of sol done at field
weight of soil required / weight of soil = (if the value is more than 1.5 ) then the pipeline is safe..
regards

• -

• Member

Join Date
Sep 2008
Posts
29
Thanks
0
Thanked 1 Time in 1 Post
sorry,
if the the value = 1 or less , then the pipeline is no safe, you must to put the depth of pipe H more than the first step...
when H is =1.5 meter...and teh diffence temperature in less than 50° C , no buckling...

• Senior Member

Join Date
Jan 2009
Posts
116
Thanks
2
Thanked 85 Times in 17 Posts
KUNAL

wud try to give most of them to you by a day or two.....hopefully

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•