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Mathcad - Punto 3 - 3 23.75 34.2 23.75 A1:= 100 2 12 2 100...

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3. 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 - × = = Ass A1 A2 , A3 , A4 , Fs , ( ) A1 Fs A2 Fs + A3 Fs + A4 - Fs + = Ass A1 A2 , A3 , A4 , 420 10 6 , ( 29 3.325 10 5 × = C 0.32 = a 0.85 C 0.272 = = b 0.4 = ϕ Pn a b , fc , Ass , ( ) a b fc 0.85 Ass + = ϕ Pn a b , 28 10 6 , Ass A1 A2 , A3 , A4 , 420 10 6 , ( 29 , ( 29 2.922 10 6 × = N m2
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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 -
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