• I just took this practice exam the other day and it took me a moment to figure out what it was trying to say, even though I have done a few BOMA floor plans.

Basically the image above is showing different conditions. The main tenant space is in the middle. And then there are other situations around it: vertical penetrations, a parking area, service area, amenities, other tenant spaces, etc. The question is asking where to draw the line when dividing between these spaces, specifically between a tenant space and a potential tenant space (the shell). The red line shows what to do in which situation. When it's a parking area, vertical penetrations, building service area then you split the rentable tenant space at the interior (tenant side) wall. Shared amenity spaces and spaces belonging to other tenants are split in the middle.

When it's split down the middle, it's saying that the tenant is responsible for half of that wall. The other tenant (or space) is also responsible for half of that wall. When it's a wall that is building circulation (not within the tenant space) or a vertical penetration, the tenant is only responsible for their side of the wall.

Hope that makes sense!

• I think this question is very unclear.  I don't see any spaces labeled 200 or 300.  I understand that the demising wall is in the center between tenant spaces, but that is not clearly stated in the narrative.  The answer shows the correct area in the wall section being slightly off-center too (???).  Ugh...  And when I printed this exam, that diagram was so tiny, it was unreadable.

Rebekka O'Melia, R.A., NCARB, B. Arch, M. Ed, NOMA, Step UP ARE 5.0 Courses

• I think it wants you to use the diagram to figure out which one applies. What is Suite 200 considered? What is a shell space considered? They don't want to tell you they are both tenant spaces. They want you to see all the options it could be in the diagram and determine what the spaces most likely are.

I do find it odd that the correct area portion is off center. I'm not sure why it's giving more clearance on one side over the other since it should be directly in the middle. Unless they're showing one side with a thicker finish applied by the tenant and one side the standard shell finish. But they both look the same to me.

• Thank you Kelsie for your detailed answer! I think I got the idea of this question but I was also confused of what does "Shell Space 300" mean. I thought it was the building shell which is the facade and I couldn't find a clue from the diagram... Ugh this is a language problem...

• I agree that "shell space" is pretty confusing. I have done a couple TI projects and BOMA calculations, and we say "core and shell space" are spaces out of the tenant improvement scope, usually those spaces are shared by multiple tenants like a shared corridor/lobby or something, and is considered Building Service Area for BOMA calculations, not Tenant Area. This question didn't say anything about the shell space, so how could we know "the shell" means a potential tenant space? Or are they just the same in NCARB's world? Could someone from NCARB review and clarify?