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!

*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.

Jobs

AUTOPIPE QUESTION

AUTOPIPE QUESTION

(OP)
Hi All,
I wonder if you can answer a question regarding supports and how Autopipe applies them.I would check this myself but do not have access to Autopipe.
Say we have a pipe that has a slope (i.e. it is not exactly horizontal) and it is supported. In Autopipe you specify a vertical restraint at the support points. Now my question is does Autopipe "adjust" tha action of the vertical support such that it is perpendicular to the pipe (i.e. not truely vertical) or does Autopipe just apply a constraint in the true vertical direction?

RE: AUTOPIPE QUESTION

(OP)
Any Autopipe users out there ?

RE: AUTOPIPE QUESTION

Sorry no.

However similar programs have two coordinate systems, a global and a local system. If you look at pipe forces, they are given in the local pipe segment coordinate system (X axis along pipe axis), whereas if you look at the reactions, they have the horizontal and vertical components of "Earth".

"He's declaring war on the planet itself."- Vicente Fox

RE: AUTOPIPE QUESTION

(OP)
Hi BI,
Thanks for the response. Problem was that I do not have the results from the file - only the input echo data. Anyway I got a response from Bentley Forum on this so thanks anyway.

RE: AUTOPIPE QUESTION

What did they say?

"He's declaring war on the planet itself."- Vicente Fox

RE: AUTOPIPE QUESTION

If you want the support at right angles to the slope of the line use a Guide (with or without side gaps). For true vertical support use a Y Stop. You can also add a guide (with a down gap) at the same point as a Y stop to give the Y Stop side gaps.

RE: AUTOPIPE QUESTION

For true vertical support use a Y Stop.
And if the epipe is vertical, or sloped at XXdeg then what?

"He's declaring war on the planet itself."- Vicente Fox

RE: AUTOPIPE QUESTION

Guides are parallel to the pipe not matter what the slope. Y stops are only vertical.

RE: AUTOPIPE QUESTION

I'm an AutoPIPE user, still need assistance?

RE: AUTOPIPE QUESTION

Kevin, I understand that guides are always perpendicular or paralled to local pipe coordinates. The (my) question is now, How do guide reactions, laying on a slope relate to Autopipe's global coordinate system. Autopipe does have a global coordinate system, right? XL83,.. could you explain that relationship?

"He's declaring war on the planet itself."- Vicente Fox

RE: AUTOPIPE QUESTION

Hmm, 4 years ago I worked too with Autocad 3D-Autopipe.
When the support is not in the right direction, you can rotate it, I think.

RE: AUTOPIPE QUESTION

(OP)
BI,
Found out that if the constraint is designated by using a GUIDE then the direction of the restraint is governed by the slope of the pipe since it will always be perpendicular to the pipe.

RE: AUTOPIPE QUESTION

OK, so the support engineer is left to convert that pipe-perpendicular reaction to global vertical and horizontal forces on his not-sloped beam all by himself.

Tnanks.

"He's declaring war on the planet itself."- Vicente Fox

RE: AUTOPIPE QUESTION

2
Autopipe reports both global and local results. The support report is local and global. The restraints report is global. The support/shoe designer would use the supports report and the structure/foundation designer would use the restraints report.

RE: AUTOPIPE QUESTION

Yes! I thought it would be something like that.

"He's declaring war on the planet itself."- Vicente Fox

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


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