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How to multiply the exposed surface area with a factor in Surface Schedule

Not applicable
I am working with Tiles estimation. I got the Tiles area using the field name ( exposed surface area) . Now I need to multiply this area with some factors . (such as labor factor/ wastage factor / ...)
How can I do this . Can anyone please help me ? My schedule is attached here

Barry Kelly
You can't do any calculations in the interactive schedules, other than simple summation of columns.

What you will need to look into is expressions in properties (search these forums and Archicad help).
You can associate a property to your elements )Walls and slabs).
This property can contain an expression (formula) that can calculate the figure you are after - i.e. multiply the surface area by the labour/waste factor.
You may need more than one property which is fine, and these properties can be used in expressions of other properties.
You can then schedule the resulting property rather than the surface area.


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