if youre anchor is similar to a cantliver, knee brace or a portal frame then its structural. id check it using the AISC. its not only the stress that u have to calc but also the stiffness of your structural support (make sure its more stiffer than the pipe your trying to support.) and the weld strenght.
mpkumaresan@technip-coflexip.com wrote: Dear Mahavir!
NB of in inches or mm?please clarify.
For eg: 4" pipe - allowable forces and
moments for anchors on structures.
Allowable forces: 4" * 150 =600 kg
Allowable moments :4" * 75 =300 kg-m.
allowable forces and moments are seems to
be low.
Please advice me,if i am wrong.
take care
kumaresan m p
"Prasad
Mahavir/Pipin To: <PipingDesign@yahoogroups.com>
g" cc:
<jainmp@eil.c Subject: RE: [PipingDesign] Anchor
Forces &
o.in> Moments
06/24/2002
02:07 PM
Please
respond to
PipingDesign
Hello Tushar,
Since many guides/standards cover allowable anchor forces and moments on nozzles, I guess that your question relates to anchor forces and moments on structural members, and in particular at battery limits between two contractors.
A thumb rule that has usually been followed in our part of the world is:
FR in kg not greater than 150 times NB of pipe in inches MR in kg-m not greater than 75 times NB of pipe in inches.
Cheers,
Mahavir
-----Original Message-----
From: Tushar, Zope [mailto:zope_tushar@fwc.com]
Sent: Monday, June 24, 2002 7:38 PM
To: PipingDesign@yahoogroups.com
Subject: [PipingDesign] Anchor Forces & Moments
Friends,
In one of our projects, Anchor forces & moments is the cause of arguments &
discussions of the experts.
How do we check that the anchor forces & moments are with in the allowable limits? I mean the anchor itself does not fail.
Is there any formula to check the strength of the anchor? In this case
how
to
calculate the allowable value for (Fx, Fy, Fz & Mx, My, Mz).
Thanks & regards.
Tushar Zope
Piping Engineer
Foster Wheeler Eastern Pte. Ltd, Singapore
Ph: 6890 0774 Fax: 6223 2989
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Received on Fri Jul 19 10:12:00 2002
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