RE: Query ???

From: <Sheth>
Date: Tue Jul 29 2003 - 13:38:00 EDT

Vinay,

Adding further to what Mr.Roy says:
The factors of safety considered in different codes is different. For eg, ASME B31.1 has higher safety factor than ASME B31.3. This results in different allowable stresses for the same material in different codes.

Chirayu Sheth
Piping Dept.
Veco Canada Ltd.
403.268.9344 (direct)
403.232.9840 (fx)

  -----Original Message-----
From: Gramya [mailto:grai@icenet.net]
Sent: Monday, July 28, 2003 10:05 PM
To: PipingDesign@yahoogroups.com
Subject: Re: [PipingDesign] Query ???

Dear Vinay
The allowable stresses for the same material A106 Gr B will be different as the criteria for establishing allowable stresses are different in the codes considering the area of applications of the codes. ASME 31.8 relates to Gas Transmission Pipelines, where as B31.3 relates to Process plant piping, mainly above ground piping systems.
You may have to refer to relevant codes for better understanding.

Narendra K Roy
Gramya Research Analysis Institute
302 Sunsilver Aptt., 4th Floor
Nr. Akota Garden, Productivity Road,
Vadodara 390020, India

Ph. +91-265-2303173, 2338309, (M) +91-98981 61104; Fax: +91-265-2303172; Email: grai@icenet.net ; grai@d2visp.com ; info@gramya.com Website: www.gramya.com

• Original Message ----- From: "Vinay Shankar" <vinaysr79@vsnl.net> To: <PipingDesign@yahoogroups.com> Sent: Tuesday, August 05, 2003 1:18 PM Subject: [PipingDesign] Query ???

> Hi Everybody,
> I am Vinay and this is the first time i am mailing to the group. I am
> working as a trainee engineer in teh piping engg dept.
> I have a couple of doubts.
>
> 1. What is the correct formula to calculate the thickness of a sample
bomb
> accoeding to ASME Sec VIII Div. II.
> Can anyone tell me where i can find the stress intensification factor
> for DSS material ASTM A 790 UNS31800.??
>
> 2. Why is allowable stress for the same material say ASTM A 106 GR B
> different in different codes ASME B 31.3 and ASME B 31.8
>
>
> Regards
> Vinay Shankar
>
>
>
>

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Received on Tue Jul 29 13:38:00 2003