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determine the peak flow at point C using the Rational Method. The time of concentration should be calculated using ASCE...
Time of concentration Determine the time of concentration (te) for an overland flow length of 200 ft on an area in Colorado Springs, CO, with a Manning's roughness coefficient of 0.10, for a design frequency of 25 years. The rainfall intensity-duration relationship for a 25-year frequency is as given in Table 1. Take the average slope of the area as 0.005 ft/ft. Recall that the time of concentration for inlets is given by: where time of concentration (in seconds) 1-overland...
2) For the drain system shown in the figure below, determine the time of concentration at point C using SCS Average Velocity (for overland flow). A 0.45 sq. mi A-0.23 sq. mi Paved area 500 Bare soil A V52fps 1000 ft B3000 ft
2) For the drain system shown in the figure below, determine the time of concentration at point C using SCS Average Velocity (for overland flow). A 0.45 sq. mi A-0.23 sq. mi Paved area 500 Bare soil A V52fps 1000 ft B3000 ft
Please help water resources 2. For the drainage system as shown in figure below, determine the design flow and determine the pipe size for each of the sewer section by rational method. The rainfall intensity (in/hr) is given by the IDF curve in second figure. The design frequency storm is 10-year storm. Flow from each area is shown by an arrow. The flow velocity in each pipe can be calculated by Manning's equation or Hazen-William equation by assuming a full...
USING KIRPICH METHOD IN DETERMINING TIME OF CONCENTRATION: L 1.15 tc 51H0.385 Where: . L S H Time of concentration (minutes) Length of watercourse (m) Average basin slope (S=HL) Difference in elevation (m) i = 5.41270.1614 (10)(1+0.56)0.936 where: i = rainfall intensity(mm/h) T = Return period (years) D = rainfall duration, tc (hours) Storm water quantity can be estimated by this method. Q=C.I.A / 360 Where, Q = quantity of storm water, m3/sec C= coefficient of runoff I = intensity...
4. Rational Method (20 points): A nonhomogencous watershed has the following distribution of landcover: Land Runoff Area ID A Forest B Urban C Lawns with sandy soil D Parking lot Landcover Coefficient (C) (m) Slope t (min.) 35 14 0.20 0.85 0.15 0.80 28.000 400 9,000 32.000| 5% | Unknown 11,000| 1% 2% 12 a. (5) Estimate the time of concentration (te) for the land area labeled "C" (lawns with sandy soil) using the FAA formula. Overland flow distance for...
(c) Using the Rational Method as described in AR & R for Victorian conditions and information supplied, determine the design flood in the Campaspe River catchment for an ARI of 50 years at the Rochester Gauging Station using a standard equation for determination of time of concentration for Victoria. Adopt Cy 0.18 and Area of catchment 1312 square miles.Use the Rainfall Intensity Frequency Duration Curves for Melbourne which is attached in Appendix (d)Records show that the instantaneous maximum flow at...