Archicad 28 Ceiling Label height to a slab instead of home story?

[TGreer]

I have a project where the first floor has two small areas that are below the home story by 2'-6" in one area and 1'-11" in another. The majority of building is at home story, 0'-0". The Ceiling Label tool picks up the ceiling height from the bottom of the slab I am using for the ceiling, but always relative to the home story. This makes the ceiling heights displayed in the tool incorrect for these tow areas. 

Is there a way to tell the ceiling label to display its height relative to whatever floor slab is below it instead of to the home story? 

[Lingwisyer]

No. You might be able to display an expression instead that adjusts the measured value based on a preset offset. I have not tried anything liek this before. Though would doing this not make your ceiling plan really confusing as you would then have two ceilings which at noted at the "same" height, but are actually not?

Ling.

[TGreer]

Thanks Ling. I was thinking that an expression might be the solution. I will experiment with that. 

We have the ceilings modeled at the correct height with respect to the floor in the room, which means currently they are displaying shorter than they actually are since they are referencing the Home Story, rather than the actual room floor height in the room. So figuring out a way to show it from the floor, even if we manually type the height, will give the contractor an accurate picture of what height they are installing the ceiling. 

[Barry Kelly · Accepted solution]

You have 2 reference levels that you can set.

Unfortunately, it seems the ceiling height label can not reference these extra levels, only home storey and project zero.

You would have to script a label to access the reference levels.

You would need a little GDL knowledge to do this.

You could also make a wish for this in the wishlist.

Barry.

[TGreer]

Thanks Barry, I have been using archicad for 20 years and this is first time I heard of those extra reference levels. Archicad is so powerful i am still learning new things.

I created a custom label that uses auto text to reference those 2 extra references levels for the ceiling height. I saved those to the favorties in that project so my team will know what label to use where. Worked like a charm!