Curb-opening inlets are placed along a 20 m wide street. The length of the inlets is 1 m that are placed on a continuous grade and the runoff coefficient is 0. 9. The inlets drain the stormwater into a triangular gutter with SX = 0. 03, S = 0. 02, and n = 0. 03. Determine the maximum allowable distance between inlets considering that the rainfall intensity is equal to 15 mm/h and the allowable spread is 3 m.