×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

1st Shell Course Vert Weld Offset

1st Shell Course Vert Weld Offset

1st Shell Course Vert Weld Offset

(OP)
I can't find anything in API650 or 653 that discusses required offset between shell vert welds and bottom plate lap welds.  Specifically, regarding a bottom replacement.  I have always tried to use 12" when designing and detailing new construction, and this was just a rule-of-thumb that someone told me years ago.  Does anyone know of any requirements by API, and if not what sort of "best practice" might you employ? Thanks.

RE: 1st Shell Course Vert Weld Offset

Tank Dude,
There are no spacing requirements in API-650.
In API-653 it's addressed in 9.2.3.3 last sentence

Joe Tank

RE: 1st Shell Course Vert Weld Offset

(OP)
Joe Tank,
Thanks for the response, however I can't say that I agree that 9.2.3.3 applies to this situation.  That section is for replacement shell plates and the offset of such plates from bottom weld seams.  In this case the shell is not being modified at all, only the bottom is being replaced. If it is the intent of API to convey that this section applies to situations such as mine, then it is not clear to me. In light of this, my opinion is that there is no requirement since it is somewhat similar to a new construction application (only backwards so to speak).  
Your thoughts?  

RE: 1st Shell Course Vert Weld Offset

Tank Dude,
For bottom replacements, see 9.10.2.4 for spacing of bottom joints and existing verts.  My apology for not reading you initial post carefully.  If you are using tombstone insert plates, the "new vert" weld spacing also applies.  It's also indicated on Fig 9-1.

Joe Tank

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources