×
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

Bottom to shell weld

Bottom to shell weld

Bottom to shell weld

(OP)
In de BS2654 leg length of the bottom/shell filletweld should be at least equal to the shell thickness. In the EN 14015 it is the throath thickness that should be minimum equal to the shell thickness. What is the minimum leg length or throat thickness for the fillet weld of a 8 mm shell to an 8 mm annularplate in API 650?

Please advise

RE: Bottom to shell weld

In your case it's going to be 8mm fillet weld.

5.1.5.7 Shell-to-Bottom Fillet Welds
a. For bottom and annular plates with a nominal thickness 13 mm (1/2 in.), and less, the attachment between the bottom edge of the lowest course shell plate and the bottom plate shall be a continuous fillet weld laid on each side of the shell plate. The size of each weld shall not be more than 13 mm (1/2 in.) and shall not be less than the nominal thickness of the thinner of the two plates
joined (that is, the shell plate or the bottom plate immediately under the shell) or less than the following values:

Nominal Thickness of Shell Plate            Minimum Size of Fillet Weld
(mm)           (in.)                              (mm)    (in.)
 5              0.1875                              5       3/16
>5 to 20     >0.1875 to 0.75                  6       1/4
>20 to 32    >0.75 to 1.25                    8       5/16
>32 to 45    >1.25 to 1.75                   10       3/8

RE: Bottom to shell weld

(OP)
Bonswa, If fillet size the leg length or the throat thickness?

RE: Bottom to shell weld

That's the leg length. Open API-650 to section 5 and look at Figure 5-3C. Its a design of a shell-to-bottom weld for greater that 13mm, however it still shows details.

RE: Bottom to shell weld

(OP)
Thanks Bonswa, I've posted this thread because I only have the BS and the EN to review.
Regards

RE: Bottom to shell weld

Opslagtank,

Just a remark regarding BS and EN bottom-to-shell weld size:
In BS2654, as well as in EN14015, the fillet weld size shall be equal to the thickness of the bottom plate (annular or sketch) when shell thickness > bottom thickness.
For BS, it means that the leg length shall be at least the size of the thinnest plate (bottom).
For EN, it means that the weld throat shall be at least the size of the thinnest plate (bottom).

When shell thickness < bottom thickness, you have to check the tables.
 

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