Deflection Limits: seismic-story-drift-riskIII
Serviceability deflection and drift limits per IBC 2021 Table 1604.3 and ASCE 7-22 — floor beams, roof members, exterior walls, interior partitions, and story drift for seismic and wind
| member type | load case | applicable load combination | limit denominator (dimensionless) | limit description | limit ratio | notes |
|---|---|---|---|---|---|---|
| seismic-story-drift-riskIII | seismic | seismic | 67 | Seismic story drift — Risk Category III (0.015 hsx for most structures) | H/67 | Risk Category III allowable drift |
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