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May 20, 2020 by Valensas Balsevicius

New tool in Precast Concrete for Revit: Floor+C [WORKFLOW]

Want to create layouts of precast concrete slabs efficiently in Revit? Our Precast Concrete design software has two tools to do that: Floor Panel Layout (for Floor system families) and the new Floor+C tool (for Structural Framing families).

While both Floor Panel Layout and Floor+C let you create solid, hollow core, double tee, and other types of slabs, in some cases one tool is better than the other. It also depends on user habits and project type. An example where you might want to use Floor+C is if you have warped double tee slabs, as are commonly used in parking garages in North America. Another situation is if your Structural Framing family has camber. And there are probably other cases our users will find.

Floor+C distributes Structural Framing families based on reference floor boundaries. This tool replaces a similar tool (Floor+M) that used to be part of our Precast Concrete toolbox. The reason for the replacement is that Floor+M had default steel families and some settings that were not related to precast. Floor+C should make it clearer since it comes with solid, hollow core, and double tee slab families and sample configurations for precast.

To use Floor+C, follow these steps:

1. To start using Floor+C in your project, first load families into your project.

Then, open the configuration window and create your own or modify existing ones. If you need a different slab size or shape, you can modify the provided families or use your own Structural Framing families of precast slabs. For example, here in the Longitudinal flooring tab, hollow core slab families from the standard Revit library have been selected:


2. Now you need a floor that will serve as a reference floor for laying out the precast slabs. You can draw a new one or just use the one you already have in your project. Note: the direction of slabs depends on the span direction of the floor.

3. After you have your configuration and floor, link the configuration to the reference floor layer.

Select the configuration and layer where these slabs should be created. The top of slabs will be at the top of that layer.

4. Now you’re ready to create slabs! Use the Add Flooring command:

This is an example of a simple layout from one end of the reference Floor to another.

With our families and configurations the last element will be cut to fit the size of the reference floor if possible. Also the ends of slabs will be cut if the reference slab is not rectangular. You can also add End Elements and get different slab layouts, use framing for all identical slabs, and do some other great stuff.

Got questions when using Floor+C? Check out the e-help section:


Try out our Precast Concrete BIM Software by downloading our TOOLS4BIM Dock (it's free). You'll get a free 14-day trial of Precast Concrete PLUS instant access to our free Revit extensions: Smart Select, Smart Browser Free, and Cut Opening Free.

Contact us for a quote or a free, live demo given by one of our BIM experts.


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Don’t waste time on reading technical documentation and see that this is the solution for you! Our Expert will frame a part of your project, demonstrate software functionality and share the best practice and efficient way of framing, taking into account your current needs.

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Initial Implementation Plan includes:
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