AutoCAD MEP General

Active Contributor
Posts: 32
Registered: ‎02-17-2011
Message 1 of 3 (268 Views)

connection types different

268 Views, 2 Replies
08-14-2012 11:08 AM

i just upgraded to autocad mep 2013 and i understand the duct routing preference.  my problem is that if the duct is over 24 inches wide it has to have a flange connection type and under 24" it is slip and drive.  i can not find out how to change so one end of my transition has flange and the other has slip and drive.


thank you in advance

*Expert Elite*
Posts: 1,085
Registered: ‎03-13-2008
Message 2 of 3 (264 Views)

Re: connection types different

08-14-2012 12:38 PM in reply to: NateKennis3933

This is done inside of content builder.  You will need to copy an existing transition and then edit it to have one connector as flanged and the other as slip and drive.  Currently I believe that they are set to undefined so they will connect to any type of connection.


I used to draw everything using flanged and then would set the flange dimensions based on the size of the ductwork.  I say use flanged because it is the only setting that will allow you to add graphics to your ductwork.  I even put a small flange around slip and drive.  This will allow you to draw ductwork using a single type and not have to worry if you are using the correct fitting with the correct connection.


FYI.  Autocad MEP has no out of the box solution for setting flange graphics based on duct size.  You will have to set the graphics yourself.  You can set multiples at the same time though.  You can then create a property defintion that selects the type of connection based on the size of the ductwork.  You can then schedule this as your connection type instead of the out of the box connection types.

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New Member
Posts: 1
Registered: ‎07-17-2014
Message 3 of 3 (12 Views)

Re: connection types different

07-17-2014 02:50 PM in reply to: Keith.Brown

I have a project drawn with all slip fit. It now needs to be changed to flanged. There is no way to do that without re drawing the entire project. Even if you can "force" a fittng or duct in preferences to have a flange connection, you then have to dimension each and every flange end individually. What ever happend to the add flange command and default flange size? Currently using AutoCAD MEP 2015.

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