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DRIFT LIMITS QUESTION: If a more stringent drift limit is imposed on the structure by using ASCE 7-10 Table 12.12.1 category of “All Other Structures”, do the building components need to comply with the requirements of ASCE 7-10 Section 13.5.2 for Exterior Walls, Out-of-Plane Bending, Suspended Ceilings, Access Floors, Partitions, or can this code section requirement be ignored? Would only the storefront glazing systems be required to meet Section 13.5.2?
Multiple one and two story buildings that have mostly retail and restaurant occupancies. Tempered glazing systems will likely be used throughout. Typical store fronts will be a minimum of 12 FT high adjacent to walking surfaces.
Two drift limits are being considered for the project:
FACT 1: ASCE 7-10 Table 12.12-1 clearly differentiates between buildings that have components designed and detailed for drift and buildings that have components are not designed and detailed for drift.
FACT 2: ASCE 7-10 Section 13.5.2 does not specifically state that there is an exclusion to the drift design and detailing parameters presented for the various building components indicated.