BOMA/SIOR Industrial Guide
BOMA/SIOR 2004 Method B
Known as the Drip Line Methodology, Method B measures to the most exterior drip line at the perimeter of the roof system to calculate areas. Method B is generally intended for wall-less industrial structures usually found in warmer climates.
While Method A is the most conventional approach for measuring industrial buildings, Method B has gained popularity (even in colder climates), where landlords wish to maximize rentable area. Certain features of an industrial building are excluded from the calculation of area, including canopies, unenclosed connecting links, unenclosed exterior staircases or fire escapes and unenclosed shipping/receiving platforms. The main condition for an area to be excluded is that it exists beyond the measure line.
Extreme Measures developed this guide in response to queries regarding the BOMA/SIOR 2004 measuring standard. This information should be used for reference purposes only. Extreme Measures Inc. in no way endorses the information provided. For complete information, please refer to the official publications of BOMA International and SIOR.