Deflection Limits: roof-plaster-ceiling
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 |
|---|---|---|---|---|---|---|
| roof-plaster-ceiling | live | L or Lr | 360 | Roof supporting plaster or stucco ceiling — live load | L/360 | Span/360 under roof live load |
| roof-plaster-ceiling | total | D + L | 240 | Roof supporting plaster or stucco ceiling — dead plus live | L/240 | Span/240 under total load |
| roof-plaster-ceiling | wind-snow | S or W | 360 | Roof supporting plaster or stucco ceiling — wind or snow | L/360 | Span/360 under wind or snow |
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roof-nonplaster-ceiling3 rowsroof-no-ceiling3 rowsfloor-beam2 rowsexterior-wall-plaster1 rowexterior-wall-brittle1 rowexterior-wall-flexible1 rowinterior-partition-plaster1 rowinterior-partition-brittle1 rowinterior-partition-flexible1 rowfarm-building1 rowgreenhouse1 rowseismic-story-drift-dce1 row