Duct Transition / Taper - Non Concentric FOB

[MikeRobinson]

Hi,
Does anyone know how to make a a duct transition piece Flat on Bottom?
I am using Revit MEP 2013 and cannot find a duct transition / taper that will take me
from one duct size (1000mm x 500mm) to (750mm x 500mm) with the transition / taper having one side flat.

BTW I am new to Revit

Mike.

[Michael.c]

The only way I know is to go to a section, align the underside of each duct to the same level and drag one to the other. Once "connected" you can then adjust the length of the taper by changing the angle in the properties box.

So, you don't draw duct / taper / duct. Rather, one duct, split it into two, resize the one you need to be shallower, and as I said, drag them together after aligning the bottom levels. Works the same way for the flat on tops too, and likewise in plan...flat on one side.

If anyone knows a less long-winded way I 'd like to know.....

Good luck.

[MikeRobinson]

Tried your method, but it did not work. I seem to have only concentric fittings in my library, so MEP cannot find a way to connect the two ducts.

I must add that I am only using the trial version of Revit MEP - Will the full version have more fittings?

[neightyeight]

If you select the fitting you'll see in the properties two variables called "Offset Width" and Offset Height" (or something close). If you change these variables you can get the fitting to go straight on one side.

The method mentioned by Michael.c does work, but I've found not always. If you first were to change the alignment of the duct it will always work. To do that you select the duct and on the ribbon you'll see a button that allows you to set the alignment point (middle-center, left-center, etc.)

[MikeRobinson]

Thanks for the info, but none of the above appears to work in the Revit version I am using.
As stated earlier, I am using the Trial version of Revit MEP 2013 - I am now thinking that some of the Revit content is missing.

No matter what I try, I cannot get the fitting to change to a one-sidel-flat piece.

[neightyeight]

I placed a screenshot below. Hopefully it attaches correctly and can help a bit with your problem.


Eccentric Duct Transition.PNG

[Misteracad]

Thanks for the info, but none of the above appears to work in the Revit version I am using.
As stated earlier, I am using the Trial version of Revit MEP 2013 - I am now thinking that some of the Revit content is missing.

I'm almost 100% positive that the trial versions are the same as the full-blown versions. It's just not "authorized" and will only work for 30 days. Once you purchase and get a valid serial number and product code, you can plug those in and continue using the same product that you already have installed. I say "almost" because in the past you could not SAVE or PLOT projects in a trial version, but I don't think that applies any longer.

[AaronC]

Hopefully this will help, I took a short video of me deleting a concentric duct transition and replacing it with an eccentric fitting. You shouldn't need to load in any additional duct fittings.

http://screencast.com/t/KxwuZInxQ6L

[MikeRobinson]

Thanks for all the help - Finally I got the duct to transition with FOB!!!