CI ន C2 C3 C4 CS 3 C6 C7 C8 (typ) Given: L = 25' (typ) and S = 10 (typ.). So, the overall floor plan = 75' x 60 The beam width (bw) and depth (h) of B1 (typ.) are taken to be 10-in and 20-in, respectively A typical girder, e.g., G1, has a width (b) of 12-in. L SI (typ) B1 (typ) BI (typ.) 8 CIO СІ C12 GI (typ.) C13 C14 CIS C16 Fig. 2 - Floor Plan for Problems 2 & 3.
The beams, e.g., B1 (typ.), are also cast with fe' =5,000 psi (normal weight concrete, 150 pcf. B: = 0.8). Use d = h-3", for both positive and negative bending. (a) (10 points) Determine per AC1318 the effective flange width (be or by) 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 b) of 76-in (i.e., ignore the one calculated in part (a)], compute the maximum flexural reinforcement required (i.e., As man) and its corresponding design bending (M.) of B1 for positive bending only. Use & = 0.005.
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