Roof Level & Overhang

[M!chelle]

New to Revit.  How do I apply an overhang and still have my roof attached to the specified level on the eave?  When I add an overhang it attaches from the extended overhang endpoint instead of keeping assigned level at the eave.

[Revit_Whisperer]

The height of the eaves of the roof is dependent on several things...the Rafter Cut, Fascia Depth, Rafter or Truss, Slope and overhang distance.  If you want the eaves to be at a specific elevation in relation to the level you can physically just move the roof to where you want it...this will change the Base Offset from Level in the properties...so it is still associated to a specific level.  If you need to adjust specific eaves, edit the roof, select a line that you want to adjust in the properties or align eaves.  If some of the overhangs are different than others, then select the line, delete it and place it again with the proper offset.

[M!chelle]

Isn't there a way to create it correctly in the footprint instead of having to go back and move it down to the eave/wall height/level?  I'm doing something wrong - currently due to lack of training.

[ennujozlagam]

@M!chellehello, is there another way that you can create your own family using metric profile.rft and assign the profile usage so you can control all the parameters. please see attached. thanks

[ToanDN]

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@M!chelle wrote:

Isn't there a way to create it correctly in the footprint instead of having to go back and move it down to the eave/wall height/level?  I'm doing something wrong - currently due to lack of training.

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Revit defaults the set location of a roof at the base plates.  If you want the eaves to be the set height and don't want to manually move the roof vertically, instead draw the footprint at your base plates and of set the overhang distance, just draw the footprint of the roof directly at the edges of the overhang.

[M!chelle]

In my lack of terminology the base plate (wall?) is the eave?  Attached is screenshots.  In the aligned photo my roof footprint lies on top of the walls and hits exactly as it should.  The roof attaches on Level 8 as shown.  However when I apply an offset the roof jumps up off the wall and aligns to Level 8 at the overhang? 

[ToanDN · Accepted solution]

That is not expected.  Did you apply the overhang offset by actually offsetting the roof boundary or using the Overhang distance box?

[M!chelle]

No, I was manually moving my roof footprint line out, instead of telling it that it was an overhang. I suppose it had no way of knowing I wasn't adjusting the baseplate.  Thank you! 

[Anonymous]

I say model your roof manually. Model one roof, move it in the Y direction down as it would sit on the plate in reality (the rafter would be cut with a "birds mouth"), and align all other roofs with that one. Done. This method is widely used in the residential field in my area around Dallas Texas, and has proven to be very consistent. I modeled hundreds of architectural, and structural models for DR Horton This way. This is a structural model in the video.

https://www.dropbox.com/s/jifucghd4aa0svq/Roof_Modeling.mp4?dl=0