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TAREA 1 6 puntos grafica - 1 AXIAL A COMPRESION 4#6esquinas...

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1. AXIAL A COMPRESION 4#6esquinas 8#5 = A1 23.75 100 2 12 2 34.2 100 2 12 2 + 9.658 10 4 - × = = A2 23.75 100 2 12 2 3.958 10 4 - × = = A3 23.75 100 2 12 2 3.958 10 4 - × = = A4 23.75 100 2 12 2 34.2 100 2 12 2 + 9.658 10 4 - × = = As1 A1 A2 + A3 + A4 + 2.723 10 3 - × = = Ass A1 A2 , A3 , A4 , Fs , ( ) A1 Fs A2 Fs + A3 Fs + A4 Fs + = Ass A1 A2 , A3 , A4 , 420 10 6 , ( 29 1.144 10 6 × = ϕ Pn fc Ag , As1 , Ass , ( ) Ag As1 - ( ) fc 0.85 Ass + = ϕ Pn 28 10 6 0.16 , As1 , Ass A1 A2 , A3 , A4 , 420 10 6 , ( 29 , ( 29 4.887 10 6 × = ϕ Mn 0 = 2.
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2. A1 23.75 100 2 12 2 34.2 100 2 12 2 + 9.658 10 4 - × = = A2 23.75 100 2 12 2 3.958 10 4 - × = = A3 23.75 100 2 12 2 3.958 10 4 - × = = A4 23.75 100 2 12 2 34.2 100 2 12 2 + 9.658 10 4 - × = = As1 A1 A2 + A3 + A4 + 2.723 10 3 - × = = Ass A1 A2 , A3 , A4 , Fs , ( ) A1 Fs A2 Fs + A3 Fs + A4 Fs + = Ass A1 A2 , A3 , A4 , 420 10 6 , ( 29 1.144 10 6 × = C 0.4 = a 0.85 C 0.34 = = b 0.4 = ϕ Pn a b , fc , Ass , ( ) a b fc 0.85 Ass + = N m2 ϕ Pn a b , 28 10 6 , Ass A1 A2 , A3 , A4 , 420 10 6 , ( 29 , ( 29 4.381 10 6 × =
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R5´´ 4 23.75 12 100 2 π 0.016 = = R6´´ 4 34.2 12 100 2 π 0.019 = = d1 0.05 R5´´ + 0.066 = = d2 d1 R6´´ + R5´´ + 0.08 + 0.181 = = d3 d2 R6´´ 2 + 0.08 + 0.299 = = d4 d3 R5´´ + R6´´ + 0.08 + 0.414 = = L1 0.4 = fs 420 10 6 = fc 28 10 6 = Ass´´ L1 d1 , d2 , d3 , d4 , fs , ( ) L1 2 d1 - fs A1 L1 2 d2 - fs A2 + L1 2 d3 - fs A3 + L1 2 d4 - fs A4 + = Ass´´ L1 d1 , d2 , d3 , d4 , fs , ( ) 4.558 - 10 4 × = ϕ Mn L1 a , b , fc , Ass´´ , ( ) L1 a - ( ) 2 a b 0.85 fc Ass´´ + = ϕ Mn L1 a , b , fc , Ass´´ L1 d1 , d2 , d3 , d4 , fs , ( ) , ( ) 5.153 10 4 × =
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3.
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