Revit Flat Roofs with Slopes and Tapered Insulation - CADtechSeminars.com

This video covers how to create a flat roof in Revit that contains slopes for roof drainage.
We cover creating the flat roof, adding slopes to roof by using shape editing and split lines.
Once the split lines are added, we then adjust the points to actually slope the roof. Once sloped, we then adjust the roof materials to have the desk remain flat and the insulation taper to create the slopes for drainage. Finally we do a bit of Line Work to create the clean view.

[@Headgamerz]

I have to say I'm not a fan of using the Linework tool to hide roof errors. Those lines aren't just ugly; they are in fact marking a slight change in slope. If you don't care at all about the slope and just about point elevations then maybe that's ok, but if you're concerned with having the correct slope like in the plan you were copying from then this can be a big problem.
I much prefer making the roof accurate enough that the changes in slope don't happen in the first place. It's harder for sure, but the result is much cleaner in appearance and accuracy.
Here is the problem: The changes in slope (and thus the lines) appear when you create a roof in the way that you did because of a rounding issue Revit has when entering in a length. Revit rounds all fractions to be divisible by 1/256". That's typically fine except when you need a fraction that isn't equally divisible by 1/256" such as 1/3". In that case revit rounds either up or down to the nearest 1/256" This can presents a problem with roofs because the rounding can mess up the precise elevation of a point thus messing up the precise slope (which by the way revit also rounds) thus creating the lines.
How does one get around this? Don't control elevation via a text interface. Instead move the node in a section to precisely the correct place. I do this by creating a section through the center of the roof then drawing a detail line at the desired slope where the roof should be and snapping the nodes to said line. If you do it correctly there are no lines, your slopes are constant, and you get a precise realistic elevation at each point.

[@TheMindeliux]

My God, I've been searching for solution to this for so long. Thank you!

[@kevykev913]

this is a good video. but one command helped me out on a sloped floor to roof drains....the variable check! thanks. Love your videos!

[@valeriepierre7297]

Thanks for the video. I have been using vertical opening instead of shaft when i only want to change the roof.

[@jonathanludwig4725]

I prefer the vertical opening as well. It will only cut the selected roof, and nothing else.

[@SuzukiMx184]

I didn't know Matthew McConaughey went into teaching Revit tutorials. What a career change!

[@bertmc4442]

hahahhaha you are right!

[@blomstromm1]

Excellent!

[@lorenzodifolco]

Thanks!

[@chadabrahams3088]

Thanks so much!

[@nihatibrahimirmak5198]

thank yioiuuuuuuuu

[@CADuniversity]

Glad I could help!

[@bassemb.2369]

write Revit version please!