topic Re: Adding percentage to Zone Area schedule in Project data & BIM

Adding percentage to Zone Area schedule

cadsph — Mon, 02 Jun 2025 23:48:14 GMT

Hi,

How do you add a percentage column to a zone area schedule? Where each zone/area is a percentage of the total site area?

Please see attached.

Re: Adding percentage to Zone Area schedule

Lee Hankins — Sun, 03 Jul 2022 14:22:26 GMT

I think you’d have to create a new property expression and a zone for the entire building or site area to calculate it or have a property which defines the overall area figure then use an expression to calculate the percentage of each zone based on that figure.

Re: Adding percentage to Zone Area schedule

Andrii Levko — Mon, 04 Jul 2022 07:48:37 GMT

@Lee Hankins

To do this correctly, you need to somehow collect all the data about the zones in one object, because formulas (property expressions) work at the individual element level. How can you do it?
In this case, it's probably possible to create an property for overall zone to have a total area figure, and then use an expression to calculate the percentage of each zone based on this figure, but this is a semi-automatic method. For complex projects, this is not a very suitable solution.

Unfortunately, the truth is that it's better to export this schedule to Excel, add a percentage column, and then import it back into Archicad.
Maybe you know how to do it differently?

Re: Adding percentage to Zone Area schedule

Barry Kelly — Mon, 04 Jul 2022 01:09:29 GMT

Zones can not talk to each other and schedules can not do calculations, so you have to set it up with properties with expressions as Lee mentioned.

You need to create a fixed property for zones where you can manually set that property value to the overall area of all of your zones.

Then set up your percentage expression, based on the actual zone area as a percentage of the total area property.

See the Help reference for a similar example ... https://help.graphisoft.com/AC/25/INT/index.htm?rhcsh=1&rhnewwnd=0&rhmapid=#t=_AC25_Help%2F045_PropertiesClassifications%2F045_PropertiesClassifications-20.htm%23XREF_60633_Display_Regulation&rhsearch=expression&rhsyns=%20

Except is it not quite the same - the 'mandatory glazed area' which is a fixed value, will become your 'total zone area' fixed value.

If your total zone area ever changes, you will have to manually adjust that fixed value.

Barry.

Re: Adding percentage to Zone Area schedule

ryejuan — Mon, 04 Jul 2022 01:46:18 GMT

is there a simpler way?

Re: Adding percentage to Zone Area schedule

Barry Kelly — Mon, 04 Jul 2022 02:23:18 GMT

@ryejuan wrote:

is there a simpler way?

Manually doing the calculations yourself.

Or exporting the zone areas to an external spreadsheet you have set up that can do the calculations for you - but I wouldn't say that is easier.

Barry.

Re: Adding percentage to Zone Area schedule

poco2013 — Mon, 04 Jul 2022 02:35:20 GMT

Python Script ???

Re: Adding percentage to Zone Area schedule

cadsph — Mon, 04 Jul 2022 02:41:52 GMT

Hi Barry,

I've created a new property in "General Rating", but it's like the schedule can read the property to populated it?

Please find attached.

Use "Calc Area" --> convert unit to String --> convert to Number ...

Re: Adding percentage to Zone Area schedule

ryejuan — Mon, 04 Jul 2022 02:48:04 GMT

In a way that's what I'm currently doing for most projects. Prone to error specially if you are rushing things and might overlook certain items. Am not sure how difficult it is for Graphisoft to incorporate this kind of things in their built in schedules (wishing that there is a button to press with % or show all FFL or Glass symbol for your door and windows schedules.)

Re: Adding percentage to Zone Area schedule

Barry Kelly — Mon, 02 Jun 2025 23:46:14 GMT

This is what you need to do.

Barry.

Re: Adding percentage to Zone Area schedule

cadsph — Mon, 02 Jun 2025 23:48:53 GMT

Thanks Barry. I managed to get it. (See attached).

Re: Adding percentage to Zone Area schedule

cadsph — Mon, 04 Jul 2022 07:57:06 GMT

It just seems a very convoluted way to determine simple percentages from the model.

Re: Adding percentage to Zone Area schedule

cadsph — Mon, 04 Jul 2022 08:00:24 GMT

I've been asked to do it this way, where I'm gleaning data direct from the model.

I have not been show this method (before now) by the person who asked me to do it. so I'm assuming it could have been done.

Re: Adding percentage to Zone Area schedule

ryejuan — Mon, 04 Jul 2022 09:14:58 GMT

I know and saw the revit dept here in our office can do computations in schedules vs Archicad well its always an on going debate which is best but trying to make it work is also another story. 😅

Showing the plot ratio (Proposed GFA / Site Area) is also a simple yet manual task in Archicad, there's no way I can generate it automatically.

Re: Adding percentage to Zone Area schedule

ryejuan — Mon, 04 Jul 2022 09:19:37 GMT

I wish everyone has time to fiddle and learn with several on going projects at hand not that easy... 😶

Re: Adding percentage to Zone Area schedule

cadsph — Mon, 04 Jul 2022 09:24:43 GMT

Yes. I'm a Revit User also, and percentages of site areas can be collated easily.

Re: Adding percentage to Zone Area schedule

tomyg — Mon, 02 Jun 2025 23:47:16 GMT

Hi all, i'm wondering if anyone can help. i can't seem to get the property manager zone areas to work as the above. I've setup the zone property as the above posts but it doesn't seem to be picking up the zone areas. I've done a quick example in Archicad 26.

I'm trying to make an automated site coverage note for my site plans.

Re: Adding percentage to Zone Area schedule

poco2013 — Thu, 20 Oct 2022 03:40:42 GMT

Area Analysis using zones and a Python script is a relatively straight forward and easy procedure. However, it seems that everyone calculates it differently and has their own ideas as how to define it. I doubt if you'll get any definitive suggestions without knowing your specifications, it is just impossible to guess your needs.

Exactly, what do you need to calculate and from what relationships?

Re: Adding percentage to Zone Area schedule

tomyg — Thu, 20 Oct 2022 04:26:35 GMT

Hey Gerry,

I've used the base Aus select template in Archicad with no changes for this very reason. It's as basic as it comes out of the box. if you look at the previous solution to this thread, you'll see it seems pretty straight forward but for some reason I can't get it to work in the same manor.

Re: Adding percentage to Zone Area schedule

poco2013 — Thu, 20 Oct 2022 04:47:47 GMT

I have no idea what the AUS template is: And the accepted solution uses a manual total area calculation , as I see it. I thought I idea was not to have to be entering a sum manually. But -- Whatever?? That is the essence of the problem - what is going to constitute the reference areas and how to obtain that? But manual entry works too.