About Archicad's documenting tools, views, model filtering, layouts, publishing, etc.

Setting up Site RL VS Internal Floor RL


Hi all


I'm currently working on modelling a site model where the location is 250m above sea level.

However for the internal space at project zero I would like for the levels to be recognized as 0mm instead of 250000mm  - how do I go about with that?


I have currently set my story settings to the actual height above sea level - worried that if I changed all that to zero - all my modelled elements will go wrong.


Thanks for the help in advance!


Usually you would just set your Project Location - Altitude to 250m then reduce your ground level story... but your story info does not show a height from zero... Some new thing in 25?




AC22-23 AUS 7000Help Those Help You - Add a Signature
Self-taught, bend it till it breaksCreating a Thread
Win10 | R5 2600 | 16GB | GTX1660 
Barry Kelly

I would always set my ground floor (storey 0) to zero height (Project Zero).

Then as Ling mentioned set the altitude (sea level height) as a negative value (-254600 in your case).

If you adjust this now your model should adjust too.

But you will also have to adjust the 'height to next' of the ground floor back to 230 as show in your image.

Also if you have any 2D annotation in elevations and sections, you will have to manually move that down to match the new model position.


This way, all levels can be based from project zero (your ground floor which is at zero height) and if you need to, you can reference to sea level or the other 2 reference levels that you can set (in Project Preferences).






One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
Erwin Edel

We also have project zero at zero always. It is much easier to adjust the sea level (or in our case custom level since we use 'NAP' (Amsterdam Ordnance Datum)) when you inevitably decide to change your level slightly over the course of a project.

Erwin Edel, Project Lead, Leloup Architecten

Windows 10 Pro
Adobe Design Premium CS5

Start a new conversation!

Still looking?

Browse more topics

Back to forum

See latest solutions

Accepted solutions

Start a new discussion!