A simply supported one-way slab of 12 ft span and 8-inch thick is given. The rebar...
A simply supported one-way slab of 12 ft span and 8-inch thick is given. The rebar used in the slab is #8 at 6 inches on center. Determine how much live load (psf) may the slab safely carry. (f'c=3,000 psi, fy=40,000 psi).
Homework Answers
Step 1:
L=12 ft
H=8 in
fc=3 ksi
Fy=40 ksi
Step 2:
As=#8 bars 6 in on center
As=1.57 in2/ft
As=
bd
Consider d=8-2=6 in
1.57=x12x6
=0.0218
Step 3:
Mu/0.9x12x6x6=759.8 (from appendix A-TABLE-A-13)
Mu=295410=24.61 ft-kips
Mu=WuL2/8
24.61=Wux12x12/8
Wu=1.36 kips/ft is the maximum load possible on the slab
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