Sloped ductwork

[mabrey]

Hey all,

If this has been talked about already, then I apologize, but I couldn't find anything on this subject...

As you know sloping ductwork in Revit is a chore, having to draw it flat, change the offset of one end, change the slope, etc. There is no rise/run ability when drawing ductwork, so modeling sloped roof exaust, or acid exhaust, or any other sloped system, takes an incredibly long time. I recently had an idea about speeding this process up, and put it to the test.

I simply use the pipe tool with a specified slope, and draw how I want the duct layout to be. Then I trace over the pipe with duct segments, leaving out the fittings. I then align the duct segments to the pipe segments in plan and section, and then simply use the trim tool to connect all of the ductwork together. Afterwards, I delete the piping that is no longer necessary, or hide it. This works surprisingly well, and I will be saving a lot of time in the future on my sloped duct systems.

I know in 2009 that you can now draw in section, but it is still very difficult to draw at a specified slope, especially over long distances, so this method would still be beneficial in 2009 as well.

-Jon

[RobertB]

Thanks for posting your idea!

[sgermano]

I have to do some sloped kitchen grease exhaust ductwork and will be trying this approach. Thanks for the great idea!

[Ian Matthews]

I know in 2009 that you can now draw in section, but it is still very difficult to draw at a specified slope

I found that it's pretty straightforward in section (in 2009) if you delete all your snap angles and just have the one set to to the required amount.

What would make life easier would be a full screen curser that you could snap to the required angle.

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