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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.

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Perimeter Building Columns

David Van Haaren
December 19, 2011

We have a client who is questioning the practice of carrying the leaseline through the perimeter columns. As per the standard, no deductions shall be made for columns necessary to the building. However, the columns along the perimeter often 'grow' larger than the interior columns when the framing conceals building services, or, in this case, the columns are built out with granite on the exterior, making them larger. The interior projections of these columns is about 42"X14" when in reality, the actual column with the enclosure is much smaller. Should this be treated as a wall and the leaseline go araound it?

David Fingret
Extreme Measures Inc.
December 19, 2011


The standard does not include provisions for a column by its size or by what services may be contained within its enclosing walls. The only condition for taking your lease line around the column would be if you are able to determine that the column is not necessary to the building.


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