Using a sacrificial story named Datum / AHD to “push-up” the building model to sea level. In other words, Sea Level moves up or down not Project Zero. Therefore making use of the Relative Level – Project Zero = Ground Floor and changing the Sea Level value will not have a knock-on effect of the building model moving up or down, including layouts becoming disassociated. But please note the section to layout placement is not affected by the addition of 10m. When opening the layout A-06 Section one will see that the four sections will update to show the 10m to Sea Level reference. Now when opening any of the Sections one will see the logical story relationship of -1 Basement +6.40, 0 Ground Floor +10.00, 1 First Floor +13.60 etc to Sea Level. Then looking at any of the Elevations or Sections to see the Sea Level relationship, if one selects all four sections in the Project Map and right-click (context menu) the option “Section Settings…” then under the drop-down menu STORY LEVELS > Reference Level change the option to Sea Level.

For now, I am just going to insert the value of 10 m for “Altitude (Sea Level):

The default settings for Project Location are indicative that it has not been setup to match Google Maps. The next step is to insert a Sea Level reference. Looking at any of the sections or elevations one can see the “0 Ground Floor = 0.00 setup using Project Zero / Reference Level. It uses a logical story relationship of Story -1 = Basement, Story 1 = First Floor, Story 2 = Second Floor, etc.

Let’s first look at the correct way with the use of Project Zero using Story 0 = Ground Floor slab (street level). The building used is the Microsoft Office Complex in GRAPHISOFT Park, Budapest, Hungary. That way any reader of this article can download the file for reference purposes if they so wish. Further to my previous post “How to prevent your ARCHICAD model from becoming detached from Sea Level” I was asked to follow it up with an example.įor the example, I decided to use the project file supplied by GRAPHISOFT, Volume 5 – Using Teamwork.

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