Forums >> Revit Building >> Technical Support >> Rentable vs Gross area, gross area in practice

adictedi

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My question regards the following - multi-family residential buildings have area, that all of the occupants use, the term I would loosely translate as "common area". This consists of, for example, staircases, corridors, walkways, storage rooms, technical, fascility rooms, etc. If, then, the total building area is the whole lot that our client will be willing to sell, we will have to add the divided area of the common area to each appartment in order to sell it all. Actually the formula is GrossAppArea=AppArea + AppArea/(TotalArea-CommonArea)*CommonArea. 

Is there a way to incorporate this in my area plans in Revit?

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WWHub

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You could determine it from a schedule. 

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adictedi

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Thank you for your flashing reply, but .. how so?

My client wants to be looking at the actual gross area of each appartment. When I am making my Area plans is there a way for me to make the tags show the area after that computation, not the one that it measures?

Or even craete a table within revit, one that would automaticly grab values from the schedule, run them through a formula and give me the desired effect? Or, in other words, any means which will save me from having to manually imput every value.. ?

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WWHub

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You need to add parameters to your rooms that will allow you to group them in a schedule.  For instance "Space Type" .  Then you would assign "Public Space" to Space type for public spaces, "Apartment 1", Apartment 2" .... for the non-public spaces.  And when you schedule, you sort by this grouping without showing all instances.  Now the area will be for this grouping and you can have a calculated field that will use this.

Calculated values other than room areas can not be shown in a tag. 

Remember - Area Plans and Room areas are two different things in Revit.  You can have an Area Plan that is defined differently than Rooms ..... And scheduled accordingly.

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adictedi

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Thanks for your answer!

What would you think about this thread here:

http://blog.revitforum.org/2011/04/working-with-schedules-relationship.html

Might that be the same thing? 

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