RE: [PipingDesign] Sloped headers

From: <Richard>
Date: Tue Jan 15 2008 - 00:15:00 EST

Hi Mandar,
I just read your post on this subject. By now you've seen my post. I am still puzzled as to how trunnions would apply in a sloped line, whereas you're seeing something I don't. Can you help me in this? If my definition of a trunnion matches yours, how does this apply to a slopped line? If my definition of a trunnion differs, then in what respects, and specifically in regard to the use in a sloped line.

Many thanks,
Richard B.
Calgary, Canada

-----Original Message-----
From: [] On Behalf Of
Sent: January 14, 2008 9:51 PM
Subject: Re: [PipingDesign] Sloped headers

There is nothing fundamentaly wrong in using trunions for sloped lines. Some companies use trunions of a certain maximum length (e.g. 400mm). If your trunion lengths are within the support standard allowable lengths, it's OK.
If the line runs on shoes/saddles, the supporting structure elevation has
to change after every few supports.

However some clients (Operators) do not prefer pipe sections in supports due to difficulties in monitoring their corrosion. Check if this is applicable to your project.

Have a nice day.
Motivation will almost always beat mere talent.

ravi patel
com> To
Sent by: PipingDesign@ <>
PipingDesign@yaho cc
[PipingDesign] Sloped headers

14-01-2008 20:47

Please respond to

In the current project of a petrochemical plant, one of the senior designers had run a sloped header 120 m long on trunions of varying height.
he had issued the drawing 2 months ago.

Now we have a senior checker in company, who was going through the model review.
he wants it to revise the header and run it on shoes/saddle.

I just wanted to know whether anything was wrong with using trunions. Is it fundamentally wrong to run sloped headers on trunions??


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Received on Tue Jan 15 00:15:00 2008

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