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What is the most significant change to the 2015 IBC as it pertains to commercial interiors, and why is it significant?
While there is no change in the code that I could generally qualify as “most important”, there are changes in some sections that will have a considerable impact on certain conditions. One such instance is the change in minimum aisle widths. The required width of aisles in Group B and M occupancies must now be consistent with the widths required for corridors and is no longer limited only to the capacity based on occupant load served. This means that aisles, which used to have a minimum required width of 36 inches now have the required minimum width of 44 inches, when the occupancy exceeds 49. Since aisles are formed by fixed or moveable furnishings and equipment, such as office workstations, gym equipment and merchandise pads, increased exit sizing may have the effect of increasing space requirements.
Answers provided by Kimberly A. Marks, ASID, NCIDQ. Marks is a registered interior designer and president of The Marks Design Group.
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