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CAD tip CAD tip # 5980:

Question CAD 
 %  platform  category 
Q - question

Arithmetic expressions in Revit dimensions, combining metric/imperial

A - answer You can use mathematic formulas similar to Excel in the dimension texts in Revit projects.

Instead of entering a specific number (length, angle) you can use an arithmetic or conversion (e.g. inches-mm) expression in the dimension text (the blue text). Examples:

  
=1360/3  
=810-45mm
=120*30%  
=2'-3"  
=sqrt(16)  
=88^2  
=atan(1.0)  

You can also combine units or use metric units in an imperial project or vice versa - like =5000-7'5'':

Imperial units (feet/inches) can be entered with single or double quotes as 1'-2'', or 1'2", or 1'2, or just 1 2 in imperial projects.

Revit calculates the resulting value (according to the current project settings) and uses it to change the geometry paramatrically.

Revit
100% *  CAD 
6.2.2008    6493×  
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applies to: Revit ·

See also:
Tip 11581:How to compare changes between two versions of a Revit BIM project?
Tip 11505:Get name of the original Revit BIM model from DWG files in AutoCAD.
Tip 11502:How to detect DWG files created as an export from Autodesk Revit?
Tip 11494:Entering decimal values using fractions in CAD applications.
Tip 11377:Annotating foundations - when they are created as walls.


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