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Mira la respuestaMira la respuesta done loading Muestra el texto de la transcripción de la imagenPregunta: 1. A floor system is supported by beams with a span of L=6 m, section bw = 40 cm, cast monolithically with a 15 cm thick slab. The center-to-center spacing between beams is 5 m. in the positive moment zone, 70 cm2 of steel is provided at a depth d=46 cm. The resistances of the materials are f'c 341 kg/cm2 and fy 4200 kg/cm2. Find the moment resistance ϕMn
1. A floor system is supported by beams with a span of L=6 m, section bw = 40 cm, cast monolithically with a 15 cm thick slab. The center-to-center spacing between beams is 5 m. in the positive moment zone, 70 cm2 of steel is provided at a depth d=46 cm. The resistances of the materials are f'c 341 kg/cm2 and fy 4200 kg/cm2. Find the moment resistance ϕMn (in T-m, no decimal places).
Answer ϕMn = 113 T-m
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 positive moment zone, they are provided with 18 bars of 1" arranged in three layers 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 of the soul ( T - m , without decimals).
Answer, resistant moment of the soul = 109 T-m
3. A floor system is supported by beams with a span L = 6 m, section bw = 40 cm, monolithically cast in a 6.5 cm thick slab. The center-to-center spacing between beams is 5 m. In the positive moment zone, they are provided with 18 bars of 1 " arranged in three layers of 6 with d = 61 cm. The resistances of the materials are f'c = 307 kg / cm² and fy = 4200 kg / cm². Find the moment resistant of the wings ( T - m , without decimals ).
Answer: 102 T-m
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