Figure 11.6. Verification of Eq. 11.16 for the punching shear capacity of slabs with test results modification
Effective lateral stress, a2/fc= a3/l'c
Figure 11.7. Efficiency of a confining reinforcement in different concretes according to MC'90, fib Bulletin 8 and CEB
Bulletin 228
Deflection of slabs
Since the E-modulus for LWAC is smaller than for NWAC this will influence the acceptable limits for l/d. This can be calculated as follows:
The deflection of a slab, spanning one way, and subjected to a uniformly distributed load is (assuming the cracked state)
5 ql4 384 (EI)r with Mmax = 1/8 ql2 this can be written as:
it is found that g_-i
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