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sachin_rastogi_in
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Location: India
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Branch Connections and Pad Requirements

02/02/2009 11:39 PM

Branch connections can be reinforced or unreinforced stub-in/out with or

without pad requirement . How can one decide the pad requirement for

Stub- in / out branch connections ? Is there any Thumb rule or by

calculations only .

Thanks

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XMech
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#1

Re: Branch Connections and Pad Requirements

02/03/2009 8:59 PM

Calculation only.

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Stewie
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#2

Re: Branch Connections and Pad Requirements

02/03/2009 11:26 PM

What code are you designing to?
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Abdel Halim Galala
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Engineering Fields - Piping Design Engineering - New Member Egypt - Member - Member since 02/18/2007

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Location: Cairo, Egypt
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#3
In reply to #2

Re: Branch Connections and Pad Requirements

02/04/2009 12:50 AM

Depend on which code used in design. If there is no definite code, I prefer using of ASME B31.3.

Note. With respect to thread by sachin_rastogi_in, the branch connection can be stup-in or stup-on (not Stub- in / out).

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Abdel Halim Galala
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Engineering Fields - Piping Design Engineering - New Member Egypt - Member - Member since 02/18/2007

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#5
In reply to #3

Re: Branch Connections and Pad Requirements

02/04/2009 2:32 AM

Sorry for spelling, the correct is: "stub-in or stub-on (not Stub- in / out)".

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Stewie
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#4

Re: Branch Connections and Pad Requirements

02/04/2009 1:19 AM

Use ASME B31.3 304.3 "Branch Connection" unless a different code is required.

Hope this helps.

Also the correct notation is "stub-in" or "stub-on"
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pipewelder
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Location: North Georgia, USA
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#6

Re: Branch Connections and Pad Requirements

02/04/2009 3:53 PM

It is according to what specification you are piping to. If you look into ASME B31.1 or B31.3 they will have tables to show you when you should use a reinforcement pad and how big it should be. We have our own in-house Specifications that list the branch chart for which ever spec. we are using. Take for example steam piping where the spec. only allows a tee or weld-o-let type branch compared to a water pipe spec. will allow for a stub in type branch.

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Users who posted comments:

Abdel Halim Galala (2); pipewelder (1); Stewie (2); XMech (1)

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