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Forums >> Revit Building >> Technical Support >> Concrete control joints
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Joined: Wed, May 27, 2009
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I am working on an exterior residential rendering and the parking area (concrete) is just too flat looking. In actual construction it will have 10'x10' control joints and be broomed in opposite directions in each square. For my parking area, I have a split surface with concrete material. Is there any way to model the joints with the surface? or do I have to do all seperate floor slabs? Any direction would be appreciated. Thanks.
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Joined: Tue, May 16, 2006
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You don't say what this surface is. Is this a flat slab or a topography sufrace. If it is a slab, you could do a simple in-place void family that has your joints in both directions.
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Joined: Wed, Oct 7, 2009
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Do you really want to model the joints? You could apply a surface patern to it using a model hatch pattern with a 10'x10' crosshatch.
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Joined: Tue, Apr 12, 2005
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You can easily create a bump map for it by just drawing some lines in a Revit drafting view and doing a screenshot. Crop it in Paint and apply it as a bump map to your concrete
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You could achieve a more subtle effect by decreasing the line spacing and making the grey lines lighter. The attached image shows the result of using the image that I posted above (with the joint spacing at 3m, approx 10 feet).
Edited on: Mon, Dec 14, 2009 at 3:23:04 PM
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That looks amazing. Did you apply the image file to the "weathering" under custom from the out of the box cast-in-place concrete or did you do something else? Thanks
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Under Finish, choose custom and insert the image. Adjust the size and bump amount to suit. I used 1 for the bump value.
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For rendering purpose... the easiest way to do it is by using the "Wall Reveal" under Host Sweep. Just create your void profile and place it 10 x 10 spacing on your wall.
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nvm... I thought it's for the wall. In that case use in-place family as WWhub mentioned.
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Sorry, I didn't specify, but this is for a topography surface since the slab will follow the grade level and not be an even slope in one direction. Tim's suggestion seems to be working great.
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"You don't say what this surface is. Is this a flat slab or a topography sufrace. If it is a slab, you could do a simple in-place void family that has your joints in both directions."
You can't host a void family in nothing... to do that, make sure both the slab and the void are in the family together. I learned this the hard way after modeling a huge expanse of joints and then not being able to save the linework b/c it wasn't hosted in anything...argh.
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Sorry - not true. You can have hosted void families that will cut their host and they do not need to be in the family. We use face based void families to cut holes or depressions in walls, floors, counter tops ... whatever is in the model that can be cut. (You can't cut a piece of furniture that is really an imported 3d skip model. And there may be other elements you can't cut.)
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