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View Full Version : 2013 Roof- Concrete form with odd profile


thomas.denney836893
2013-05-15, 12:26 AM
I am trying to model this existing roof for a rehab project and am not quit sure how to resolve the inclines and slopes. It is a thin roof with high fascia at the perimeter and has a gradual slope down ward as it moves inward. There is also an inner courtyard with the same type of edging. I've been using extruded voids to remove triangle shaped profiles from the extruded box, but have hit a trouble spot with the four corners and how to resolve the intersection of those upper outside edge extrusions. The North and South have different angels of slope from the East and West so when they meet at the corners it gets messy. It would be nice if placing a diagonal ref plane and cutting geometry worked, but it does not, at least in my attempts. I also have the same issue with the courtyard extrusions on the underside of the roof. 92138
jsteinhauer
2013-05-15, 02:10 PM
Could you post some images of the actual existing building. Maybe a section through the building. Typically, when I am asked to recreate an existing building for a remodel/addition, I get the basic information of the building in the model, then go back and focus on parts of the building that might get touched during our project.

A roof is a system family and isn't available as a Revit family. You can create a mass and host a roof to it's faces.

Cheers,
Jeff S.
thomas.denney836893
2013-05-16, 01:08 AM
92154

Here is a pdf of the structural sheet showing the various profiles of the roof. I have also done some sketches that are a little cleaner that I can scan and upload tomorrow at work.
dhurtubise
2013-05-16, 06:34 AM
Just use a slab with Point Editing
thomas.denney836893
2013-05-16, 11:23 AM
Just use a slab with Point Editing

The problem is the underside, which, as far as I know, can not be achieved with "Roof by Footprint" or an "Extrusion". That being the case a one-off family is the only way to get the trough that runs through the middle on the top that cuts straight down into the form at 90 degrees. Or am I just noob enough that there is some trick to Points Editing I don't know about?