Contact US

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!

*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

Butt Caps used as Heads

Butt Caps used as Heads

Butt Caps used as Heads

I want to use Butt caps for the heads of a 6" diameter tank. Which head type would one use in Compress for the calculation of a butt cap?

Thanks in Advance.

RE: Butt Caps used as Heads

I'm not familiar with the term "butt cap" but if you are talking about a "pipe cap" use a 2:1 elliptical with the appropriate length stratight flange.


RE: Butt Caps used as Heads


I believe Compress does not do calculations for standard pipe fittings. You can model your pipe cap as a 2:1 SE head to graphically show it; but I would not rely on Compress' calculation output for that particular component.

If your vessel code is ASME VIII-1 and your pipe cap is an ASME B16.9 fitting, refer to UG-44.

RE: Butt Caps used as Heads

I model pipe caps as 2:1 elliptical heads. You do have to keep in mind that the pipe caps have a 12-1/2% pipe tolerance though.

RE: Butt Caps used as Heads

Be very careful in your documentation of this calculation.  Should an ASME team leader find a pipe cap calculated as an ellipsoidal head during a review you will get some grief.  UG-44 is quite specific as to how it is calculated.

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! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close