Determine whether a 5-ft × 5-ft reinforced concrete box culvert with 45° flared wingwalls and beveled edge at top of inlet carrying a 50-year flow rate of 200 ft3/sec will operate under inlet or outlet control for the following conditions. Assume ke = 0.5. Design headwater elevation (ELhd) = 105 ft Elevation of stream bed at face of invert = 99.55 ft Tailwater depth = 4.75 ft Approximate length of culvert = 200 ft Slope of stream = 1.5% n = 0.012
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