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Figure 7.12. ACI coefficients for negative moments: (a) at interior supports; (b) at exterior face of first interior support, more than two spans; (c) at exterior face of first interior support, two spans.

At C, for negative moment, ln is the average of adjacent clear spans: ln = (12.5 + 14.5)/2 = 13.5 ft

wP 0.32 x 13.52
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