Extreme Measures Planmine™ Help Desk
About Us
Sign In / Up

Extreme Measures

This help desk is a free resource intended for discussion purposes only. Neither BOMA, its chapters, affiliates, or Extreme Measures Inc.® are responsible for the information, comments or opinions expressed herein. For complete information, refer to the official publications of the standards themselves.

FAQ & Read-Me Articles
What are as-built drawings / models?
What is CAD and BIM?
How do I resolve an area dispute?
Where can I get measurement standards publications?
BOMA Office Overview
BOMA Industrial Overview
BOMA Retail Overview
BOMA Multi-Unit Residential Overview
BOMA Gross Areas Overview
BOMA Mixed-Use Overview
IPMS for Office Overview
Alternative Methodologies
Glossary of Industry Terms

Very thick tenant demising walls

Clifton McCormick
Hefferlin + Kronenberg PLLC
September 9, 2011

Normally Occupant Area is measured to CL of tenant demising walls. However I've run across a situation where the demising walls are up to 24" thick, and mostly solid masonry. To add to the complexity, there are chimneys and chases buried in the thickness of the walls in places that cannot always be determined. Furthermore, some tenants own both sides of such a wall.

Should tenant USF should exclude the walls b/c they are permanent building elements surrounding Major Vertical Penetrations? How about if such a wall is in the middle of a tenant space? Given relatlively narrow tenant spaces, this calculation significantly affects USF and RSF.

Is there any precedent for dealing with this situation?


David Fingret
Extreme Measures Inc.
September 9, 2011

Hi Clifton,

The quick and simple answer to this is no. The same rules apply for very thick walls.

If however, it is a double wall and one of the double walls is not necessary (could be removed) than you can ignore it and therefore measure to the centerline of only the required wall.

Your Comments ...

Please allow up to 24 hours for your question to appear after it is reviewed.