Forums >> Revit Building >> Technical Support >> Create Void as Slab Edge

bitslap

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I am currently creating a series of irregular floors as an outdoor stairway.  Each slab currently has a slab edge on the front edges to create a overhangs and the impression of floating stairs.

This was great until I discovered that material takeoffs don't include slab edges.  I am now looking at implementing voids into the side faces of the slab so that the graphic shows an overhang, but takeoffs are from the slab alone.

I would like the extrusion to place into the side face of the slab and fit the length of that slab.

It seems that this would mean using the face-based template, and extruding from left to right, but there are no left and right reference planes.

I'm new to Revit.  Could someone please advise on the best way to do this?  Thanks.

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bitslap

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1. Use 'Generic Model face based'.
2. Create left and right reference planes as well as length instance parameter between those planes.
3. Create extrusion profile in left or right view.
4. In front or back view, lock extrusion to left and right planes.
5. Use 'Generic Model line based' and load extrusion family into it.
6. Lock extrusion family to line.

I spent so much time using generic model and trying to set up reference planes to create grips.  The line based family was much easier.

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bitslap

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Apologies for the reposts.  I found that the method above was problematic in that even if you chain the line, the voids do not trim, and so you end up with voids protruding past their intersection.

What is working for me atm is Architecture->Component->Model In-Place-->'Generic Models' category->Sweep->Pick Path, then Select Profile.

Remember to set sweep to Void in Properties, and cut model with sweep prior to finish modelling.

Just to be clear, this solves the problem of slab edges not being included in slab area calculations.

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bitslap

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1. Use 'Generic Model face based'.
2. Create left and right reference planes as well as length instance parameter between those planes.
3. Create extrusion profile in left or right view.
4. In front or back view, lock extrusion to left and right planes.
5. Use 'Generic Model line based' and load extrusion family into it.
6. Lock extrusion family to line.

I spent so much time using generic model and trying to set up reference planes to create grips.  The line based family was much easier.

This user is offline

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