// CODE SNIPPET

2508.6.1 Diaphragm Proportions

Building Code 2018 of Illinois > 25 Gypsum Board, Gypsum Panel Products and Plaster > 2508 Gypsum Construction > 2508.6 Horizontal Gypsum Board or Gypsum Panel Product Diaphragm Ceilings > 2508.6.1 Diaphragm Proportions

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The maximum allowable diaphragm proportions shall be 1¹/₂:1 between shear resisting elements. Rotation or cantilever conditions shall not be permitted.

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2508.6.1 Diaphragm Proportions