area boundary lines going where ever

[Anonymous]

What´s the logic behind the placement of area boundary lines? When I pick lines (walls) for the boundaries, it places some of the lines on the interior side of the wall and on some to the core within the same plan.

I tried to google this and found no explanation. Is there a way to set the rules in a way that it would only pick the interior sides of the walls? 

I know I can just draw the lines myself, but it would be so much easier to just pick the walls and it would go right automatically..

[zemeraloni]

Hi @Anonymous

You should tru to uncheck the "Apply area rules" mark and then it should work for you.

Good luck!

[constantin.stroescu]

As you probably already know there are several types of areas that can be chosen as so in Revit too:

•  Gross Area -that comprises Room areas + the walls footprint areas - area measured on the exterior contour of the walls. When Gross Area is calculated per apartments or group of rooms with a certain function then it is calculated on the outer border for exterior walls and center lines for interior separator walls - 
• Rentable Area - That comprises area of the whole without exterior walls. That area is required when the interior space it is one item and it will be later rented and partitioned by different users..
• usable area   - that comprise the sum of all Room Areas ( area without walls) -Rooms

[zemeraloni]

Hi @Anonymous

You should try to uncheck the "Apply area rules" mark and then it should work for you.

Good luck!

[Ilic.Andrej · Accepted solution]

Before creating an area plan, you can choose between area schemes. The default schemes are "Gross Building" and "Rentable". Here s the thing - "Gross Building" uses corresponding rules (exterior side of the wall) and "Rentable" uses corresponding rules (interior side of the wall).

You need to pick all walls in enclosed loop so that computer knows where the interior side is (that line you see in the center of the wall will become the interior line). The problem is: "Rentable" area rules are useless cause you can't exclude voids. So, you have to draw- no way around it.

In Revit 2016 you can create a new area scheme and choose which rules correspond with it. (expand room and area and go "room and volume computations")

In later versions of Revit you cant choose between those two types. Probably cause people assumed that you only need one "Gross Building" scheme and all other will be having "Rentable Rules".

[loboarch · Accepted solution]

Here is the help topic describing the rules applied for area lines.

http://help.autodesk.com/view/RVT/2019/ENU/?guid=GUID-B4AC3088-DBA8-4EB0-BA8F-CAF8EC1EBF9D

These are based off of BOMA standards.

http://www.boma.org/standards/Pages/default.aspx

[Anonymous]

Thanks guys, all of you were sort of my answer. First I was baffled how can two similar areas in different floors differ over 10 square meters when they even have the same area type but it was a case of area boundary walls joining differently. All good now, thanks!

[Anonymous]

One more question, is there a way for the area to detect columns that it would leave them out from the area?

[cbcarch]

Columns can be Room Bounding, or not Room Bounding--select all columns, then uncheck Room Bounding in Properties.