Creating rulesets: Site area vs. Building area

[mPiazziq]

Hello colleagues

I am just at the beginning of the process of designing a coursework research and I am considering the possibilities offered by different tools to achieve the results I want.

Here is the problem:

• There is a site gross area

• There is a building area. The building area might be a composition of summed or subtracted areas. E.g. ‘Walls’ GrossFootprintArea + ‘RoomType A’ GrossFloorArea - ‘RoomType B’ GrossFloorArea

• There is a rule establishing the maximum ratio of building area versus site area.

• I need to check whether the building is higher or lower than the ratio.

• list itemA higher rate indicates a negative result (it is not allowed) while a lower rate indicates a positive result (it is allowed).

Having a quick look at the ‘Solibri Model Checker Help v9.9’ documentation I found a similar concept on the ‘Spaces Must Have Enough Window Area’. However I don’t know how it could be tweaked to meet my needs.

I need to know upfront whether it is possible to solve this problem as I can’t afford to develop the whole research just to find out that it is not possible to do it with the tool I proposed.

Any help with this from anyone in the community would be much appreciated!

[lasse.lindqvist]

Hi. If you are ready to develop some Java code, it is possible to create such a check with our Rules API where you can create custom rules. I am not sure if any built-in rules directly apply to this problem, but with custom rules it should be relatively easy.

More info about the API: https://solibri.github.io/Developer-Platform/9.12.0/index.html

[mPiazziq]

Hi Lasse,

Thank you for pointing out the link to the API documentation.

I had a look at it and it seems that I can only retrieve some variables from the IfcSite through the API.

This is what I’ve found:

Is there any method to get the GrossFootprintArea parameter from the IfcSite?

Thanks!

[lasse.lindqvist]

Some properties you need to use are likely inside property sets. They can be read with https://solibri.github.io/Developer-Platform/9.12.0/javadoc/com/solibri/smc/api/model/Component.html#getPropertySets() and then https://solibri.github.io/Developer-Platform/9.12.0/javadoc/com/solibri/smc/api/model/PropertySet.html#getProperty(java.lang.String)

[mPiazziq]

Oh I see! It is a matter of ‘attributes’ vs. ‘properties’

Thank you very much!

[Ilona C.T.]

Hi,

is there any update on the topic?
I am desperately looking for a built-in rule to check the Site/built/floor area ratio. Is there any rule available I haven’t come across yet?
Thank you for your answer in advance!
Ilona