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Unformatted text preview: d=t/2) to provide for both positive and also negative moment capacity. Use the approximate moments from ACI section 8.3 for the design moments of the slab. Use the beam design equation with Φ =0.9 to compute A s needed per foot width of slab. Check ρ min and also verify that Φ =0.9. Compute the maximum spacing of #3 bars to provide the required slab reinforcement. 2) Design the steel reinforcement of the center Tbeam for maximum positive moment. Assume the effective depth d is 3 inches less than the total depth h . Note that the loading on the beam is computed based on its tributary width b o =8 ft. The flexural strength M n is computed based on the effective width b that must be determined according to ACI 8.10.2. Compute the required A s assuming Φ =0.9. Determine A smin , and verify that A s >A smin and also verify that Φ =0.9....
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 Spring '09
 Inch, ACI, required slab reinforcement, Asmin

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