• The minimum diaphragm thickness is controlled and reported automatically according to Table 8.3.1.1 for flat slabs.

  • The minimum diaphragm thickness is controlled and reported automatically according to Table 8.3.1.2 for beam-to-slabs.


Symbols

h = overall thickness, height, or depth of member, in.
ln = length of clear span measured face-to-face of supports, in.
fy = specified yield strength for nonprestressed reinforcement, psi
αfm = average value of αf for all beams on edges of a panel


Minimum diaphragm thickness

There are two different slab thickness limits according to flat slab and beam-to-slab. According to 12.3.1.2, floor and roof diaphragms are controlled automatically in accordane with their slab type.

Detailed information: One-Way Slab Design Limits and Two-Way Slab Design Limits.


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Required Strength