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Tip

  • For nonprestressed slabs not satisfying 7.3.1, immediate and time-dependent deflection is calculated according to 24.2 and is not exceed the limits in 24.2.

Info

Slab thickness is detemined by user.

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Symbols

h= overall thickness, height, or depth of member, in.
l= span length of beam or one-way slab; clear projection of cantilever, in.
fy = specified yield strength for nonprestressed reinforcement, psi

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The minimum slab thickness is controlled automatically according to Table 7.3.1.1. If calculated deflection limits of 7.3.2 are satisfied, the minimum slab thickness condition does not controlled.

Support Condition

Minimum slab thickness, h

Simply supported

l/20

One end continuous

l/24

Both ends continuous

l/28

Cantilever

l/10

For fy other than 60,000 psi, the expressions in Table 7.3.1.1 is multiplied by (0.4 + fy/100,000).

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