Problem 3. The beams, e.g., B1 (typ.), are also cast with fe' = 5,000 psi (normal weight concrete, 150 pcf. B1 = 0.8). U

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Problem 3 The Beams E G B1 Typ Are Also Cast With Fe 5 000 Psi Normal Weight Concrete 150 Pcf B1 0 8 U 1 (87.21 KiB) Viewed 16 times

Problem 3. The beams, e.g., B1 (typ.), are also cast with fe' = 5,000 psi (normal weight concrete, 150 pcf. B1 = 0.8). Use d = h – 3”, for both positive and negative bending. (a) (10 points) Determine per AC1318 the effective flange width (be or bj) of a typical beam, B1, subjected to positive bending. (b) (20 points) Use where applicable a be (or b;) of 76-in [i.e., ignore the one calculated in part (a)], compute the minimum flexural reinforcement required (i.e., As min) and its corresponding design bending ($M)) of B1 for positive bending only. (c) (20 points) Use where applicable a be (or bi) of 76-in [i.e., ignore the one calculated in part (a)], compute the maximum flexural reinforcement required (i.e., As max) and its corresponding design bending ($M) of B1 for positive bending only. Use & = 0.005.