A rectangular concrete channel 6 m wide, on a \( 2.5 \% \) slope, is discharging \( 11.3 \mathrm{~m}^{3} / \mathrm{s} \) into a stilling basin. The basin, also 6 m wide, has a water depth of 2.4 m determined from the downstream channel condition. \( \checkmark \) Design the stilling basin (determine width and type of structure).

To design the stilling basin, we need to determine the width and type of structure required to safely discharge the water from the rectangular concrete channel into the stilling basin. Given: - Width of the rectangular concrete channel = 6 m - Slope of the channel = 2.5% - Discharge from the channel = 11.3 m³/s - Water depth in the stilling basin = 2.4 m To design the stilling basin, we need to consider the following factors: 1. The width of the stilling basin should be sufficient to accommodate the discharge from the channel without overflowing. 2. The type of structure required in the stilling basin depends on the discharge and the water depth. Let's calculate the width of the stilling basin required to accommodate the discharge from the channel. Numbers by following steps: - step0: Solution: \(11.3\) The discharge from the channel is 11.3 m³/s. Next, we need to determine the width of the stilling basin required to accommodate this discharge. The width of the stilling basin should be at least equal to the width of the channel to ensure safe discharge without overflowing. Therefore, the width of the stilling basin should be at least 6 m. Now, let's consider the type of structure required in the stilling basin. The type of structure depends on the discharge and the water depth in the stilling basin. Based on the given water depth of 2.4 m, we can determine the type of structure required.