12 in. Determine the nominal capacity (Mn) as well as the design moment capacity (6Mn) for the doubly-reinforced beam cross section shown in Figure 1 in positive bending (i.e., tension on bottom, compression on top). You may assume that f. = 4000 psi and that fy = 60,000 psi. Use the iterative strain compatibility analysis outlined in class, and iterate until the strain changes by less than 5% in successive iterations. 12.5 in. 2 No. 9 Bars 24 in. 6 No. 10 Bars Figure 1

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Chapter2: Loads On Structures
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12 in.
Determine the nominal capacity (Mn) as well as the design moment
capacity (pMn) for the doubly-reinforced beam cross section shown in
Figure 1 in positive bending (i.e., tension on bottom, compression on
top). You may assume that f. = 4000 psi and that fy = 60,000 psi. Use
the iterative strain compatibility analysis outlined in class, and iterate
until the strain changes by less than 5% in successive iterations.
$2.5 in.
2 No. 9 Bars
24 in.
6 No. 10 Bars
Figure 1
Transcribed Image Text:12 in. Determine the nominal capacity (Mn) as well as the design moment capacity (pMn) for the doubly-reinforced beam cross section shown in Figure 1 in positive bending (i.e., tension on bottom, compression on top). You may assume that f. = 4000 psi and that fy = 60,000 psi. Use the iterative strain compatibility analysis outlined in class, and iterate until the strain changes by less than 5% in successive iterations. $2.5 in. 2 No. 9 Bars 24 in. 6 No. 10 Bars Figure 1
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