2. A floor system is supported by beams with a span L = 6 m, section bw = 40 cm, cast monolithically with a 6.5 cm thick

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2. A floor system is supported by beams with a span L = 6 m,section bw = 40 cm, cast monolithically with a 6.5 cm thick slab.The center-to-center spacing between beams is 5 m. In the positivemoment zone, they are provided with 18 bars of 1" arranged in threelayers of 6m with 75 cm. The resistances of the materials are f'c =347 kg / cm² and fy = 4200 kg / cm². Find the resistant moment ofthe soul ( T - m , without decimals).
Answer, resistant moment of the soul = 109T-m
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