AutoCAD Plant 3D General DIscussion

AutoCAD Plant 3D General DIscussion

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PatrickByrne
Posts: 165
Registered: ‎10-06-2010
Message 1 of 11 (1,654 Views)

Pipe cutback elbow setting using “Line to Pipe”

1654 Views, 10 Replies
07-30-2012 07:05 PM

I have a pipeline with an included angle of 93 degrees. Therefore I draw 2 lines with an included angle of 93 degrees and use the command Line to Pipe (PLANTCONVERTLINETOPIPE).

 

I would have expected when I used the Line to Pipe command it would have put in the pipe with a cutback elbow of 87 degrees. It actually puts in a 90 degree elbow, but still shows it connected and only calls up a 90 degree bend in the material list, this is not correct.

 

If I have a pipeline with an included angle of 95 degrees its puts in a 90 degree elbow cut back to 85 degrees, which is correct.

 

Is there a setting that I can change so any elbow which is not 90 or 45 degrees shows as a cutback elbow

 

Thanks in advance

Valued Contributor
neonade
Posts: 64
Registered: ‎11-22-2010
Message 2 of 11 (1,632 Views)

Re: Pipe cutback elbow setting using “Line to Pipe”

07-31-2012 06:28 PM in reply to: PatrickByrne

Thats strange, i dont have a problem doing this command, what pipe spec did you use in creating the piping?

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PatrickByrne
Posts: 165
Registered: ‎10-06-2010
Message 3 of 11 (1,626 Views)

Re: Pipe cutback elbow setting using “Line to Pipe”

07-31-2012 09:30 PM in reply to: neonade

I have attached a sample drawing of what I am getting.

 

When I run the line to pipe command on lines with an included angle of 93 degrees it puts in a 90 degree elbow without any cutback angle.

 

When I run the line to pipe command on lines with an included angle of 97 degrees it puts in a 90 degree elbow with a cutback angle of 83 degrees.

 

If I run the line to pipe as normal with the cutback Elbow toggle on it will work. I was trying to get the automatic line to pipe command working with cutback elbows.

 

Thanks for trying to solve this.

Valued Contributor
neonade
Posts: 64
Registered: ‎11-22-2010
Message 4 of 11 (1,619 Views)

Re: Pipe cutback elbow setting using “Line to Pipe”

07-31-2012 10:29 PM in reply to: PatrickByrne

I see, I already got your point...same here I get the same result.

quick work around is delete the elbow and pull the end grip of the pipe and connect it to the other pipe.

 

 

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PatrickByrne
Posts: 165
Registered: ‎10-06-2010
Message 5 of 11 (1,613 Views)

Re: Pipe cutback elbow setting using “Line to Pipe”

08-01-2012 02:45 AM in reply to: PatrickByrne

Thanks for the confirmation. Unless someone comes up with a solution I will be recommending to our guys not to use the Line to Pipe command for sloping pipe.

 

If you have a slight fall in the pipe it is very hard to see if the elbow is cutback or not and you don't want to find out during installation.

 

 

Product Support
Dan.Scales
Posts: 303
Registered: ‎03-05-2010
Message 6 of 11 (1,585 Views)

Re: Pipe cutback elbow setting using “Line to Pipe”

08-03-2012 03:06 AM in reply to: PatrickByrne

Hi,

 

This issue has been logged with our development team and is currently under investigation.

 

Thanks,
Dan



Dan Scales
Employee
PeterQuinn
Posts: 326
Registered: ‎08-15-2007
Message 7 of 11 (1,579 Views)

Re: Pipe cutback elbow setting using “Line to Pipe”

08-03-2012 09:31 AM in reply to: Dan.Scales

Not sure if this is happening here or not. I think there is a tolerance that allows 90deg elbows to be used with slightly more or less than 90 deg pipe. 

 

93 deg seems like it would fall outside of this tolerance,but it may not.

 

Sorry for the vagueness. It's been a while since I've looked at this in detail.



Peter Quinn
Senior Product Manager
Autodesk, Inc.

Mentor
PatrickByrne
Posts: 165
Registered: ‎10-06-2010
Message 8 of 11 (1,568 Views)

Re: Pipe cutback elbow setting using “Line to Pipe”

08-04-2012 03:24 AM in reply to: PatrickByrne

Most of our piping falls at 2 to 3 degrees, steam piping will have a 1:100 fall. These elbows need to be cutback.

 

If you can tell me in detail the best way to acheive this that would be great.

Valued Contributor
godiving
Posts: 68
Registered: ‎12-09-2011
Message 9 of 11 (1,394 Views)

Re: Pipe cutback elbow setting using “Line to Pipe”

12-04-2012 07:56 AM in reply to: PeterQuinn

Where can the tolerance be adjusted that Peter Quinn has mentioned?

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PatrickByrne
Posts: 165
Registered: ‎10-06-2010
Message 10 of 11 (1,381 Views)

Re: Pipe cutback elbow setting using “Line to Pipe”

12-04-2012 01:23 PM in reply to: godiving

PLANTSLOPETHRESHOLDANGLE

 

If I have a pipe sloping at 2 degrees and then goes to a vertical drop I have to set PLANTSLOPETHRESHOLDANGLE to 0, I then draw the pipe in from point to point, you cannot use the line to pipe command PLANTCONVERTLINETOPIPE as this will put in a 90 elbow and not an elbow cut back to 88 degrees. This is a bug which they are fixing up.

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