Extracted text: Q 2. Design an unlined trapezoidal canal cross section to carry a discharge of 1 cumecs on a longitudinal slope of 0.00020. Assume Manning's roughness coefficient is 0.025, side slopes 2:1, minimum allowable flow velocity is vmin = 0.4 d velocity is vmax = 0.66 dmeters- meters and maximum allowable flow d0.64