63,000# Axial Stop
63,000# Axial Stop
(OP)
Just had the latest Piping Tech (PTP) newsletter hit my inbox. Their showing a cold shoe/axial stop designed to withstand a 63,000 lb axial load.
http://www.pipingtech.com/
I must confess, I've not worked LNG. However, I see something like that, and my first thought is that there must be a mistake somewhere. Dealing with a load like that would most likely generate much wailing and gnashing of teeth with our structural engineers and I'd be concerned about what's taking all the equal and opposite reaction.
So, for my own education, is something like this common in LNG?
http://www.pipingtech.com/
I must confess, I've not worked LNG. However, I see something like that, and my first thought is that there must be a mistake somewhere. Dealing with a load like that would most likely generate much wailing and gnashing of teeth with our structural engineers and I'd be concerned about what's taking all the equal and opposite reaction.
So, for my own education, is something like this common in LNG?
Edward L. Klein
Pipe Stress Engineer
Houston, Texas
"All the world is a Spring"
All opinions expressed here are my own and not my company's.





RE: 63,000# Axial Stop
Thank you for posting the subject for discussion. Of course I know that you know better but how many inexperienced piping engineers will accept that "capability" without due consideration. you have done a great service to bring that to the table. So let me just say:
OMG!!!!!! SIXTY THREE THOUSAND POUNDS of axial loading!!!!!!
I would make reference to the B31 Code Case 178, May 6, 2005, "Providing an Equation for Longitudinal Stress for Sustained Loads in ASME B31.3 Construction"
An important term in that equations is Am / Fa. But that is only one thing that needs to be considered. Axial instability (slenderness ratio) and buckling are also to be considered.
Hey kids, don't try this at home.
Regards, John.
RE: 63,000# Axial Stop
Regards,
XHPIPE
RE: 63,000# Axial Stop
Maybe for a vertical pressure vessel 36" in dia?
I would certainly not expect a "pipe" to require 36K of in-line load.
RE: 63,000# Axial Stop
RE: 63,000# Axial Stop
By the way:
It was not my intention to reflect negatively on anyone that is supplying hardware and equipment. Quite the contrary, I only wanted to "wave a flag" to those who might not consider all the issues before properly using such equipment.
Regards, John.
RE: 63,000# Axial Stop
http://virtualpipeline.spaces.msn.com