Revit 2010: New Spot Slopes

Go to Annotate... Spot Slope... and you might notice that Revit has a new slope annotation that works in plan and elevation view. Now try annotating a roof slope with a spot annotation triangle and you might notice something peculiar. Maybe your roof is 6:12 but the annotation read 4:12. Why the error? Because Revit is annotating the Hip not the face of the roof...



Try hiting the tab key while floating over the roof edge and you'll see that the slope tag can report the slope of the hip or the face. The tool just happens to default to reporting the hip first.

This tool does not yet work on ramps or railings.

Rafters on Top Plate

If you've sketched your roof using Lines in the Roof By Footprint mode you'll notice that your roof may not be resting on your top plate the way you would expect it to.

Instead of adjusting the elevation of your roof manually... sketch your roof using Pick Walls instead. The roof will now rest on your top plate (Level 2).

But by default Revit will treat your roof joists as trusses. To get your rafter resting precisely on your top plate you will have to go into the roof's properties and change the "Rafter or Truss" parameter to Rafter. This parameter will not be available if you've sketched your roof using Lines.

Understanding how Revit places a roof in section can be difficult if you're not aware of this Revit behavior.

UPDATE (12/05/06):
Don't mix pick lines and pick walls in the same roof sketch or you'll experience ill formed roofs.

Conical Roofs

We found this feature very useful. If you want a conical or octagonal roof select Roof By Footprint and draw a circle. Select the sketch and change its Number of Full Segments under Properties to 0 or 8. You can play around with the number of segments to see how it reacts.