Rise drop symbols for Revit generic modeling are defined in the Type Properties for each duct and piping system family, and in the Mechanical Settings dialog for conduit and cable tray.
Refer to the table below for a list of symbols.
| Symbol Pic | Rectangular | Round | Oval |
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Not applicable | 
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Not applicable |
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Not applicable | 
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Not applicable |
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Not applicable | 
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Not applicable |
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Not applicable | 
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Not applicable |
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Not applicable | Not applicable |