Answer Happy

Using the Overland Flow Time nomograph (attached), find the time
of concentration for an area in which the flow must travel 50 m
over average grass on a 1% slope. Please show your work on the
nomograph and submit the nomograph with your solutions.
300 250 200 - 180 - 160 140 120 100 90 Disturbance of flow, m បា ១ ។ ៣០៩ សី ន១៨៩ ៩ឥតគិមុត888 ||▬▬ 80 70 60 55 50 45 40 35 30 25 20 16 10 9 8 7 6 5 4 3 Paved C = 0.95 Bare soil C = 0.55 Poor grass C= 0.44 C = 0.35 C = 0.28 surface Average grass surface Dense grass Character of ground Pivot line 0.10- 0.25- 0.50 1.00- 2.00 Example 5.00- 10.00- 20.00- 35 30 25 20- Percent slope Inlet concentration time, min 15 10- 9 8 7