%VY .Q1: A catchment area is 5 square miles and the total direct Runoff (E D. R = 11150 ft / sec).Estimate the base flow for the data shown in the table below?Time2345.6.5005001200 2250 2920 267020601430TotalFlow(ft/sec)202.57 | 506.43 700.32 627.97 451.44 269.1311U.H101100 910Time91213141516Total780650530510510500Flow(ft'/sec)U.H173.6 118.65 81.03 52.0928.94 11.572.89Q2: Develop a 3-hr synthetic unit hydrograph for the catchment are using Snyder's method only. Ifthe catchment area is 400 kan?, L= 25 kam and La km, assuming C15 and C,-0.7•,.0|||||||||||||1|||||||إلغاءإعادة تعي ين

Given- ∑D.R=1150 ft3/secA=5 miles2t=16 hours1mile=5280ft

Q1: A catchment area is 5 square miles and the total direct Runoff (ED.R-11150 f/ sec). Estimate the base flow for the data shown in the table below? [ 3 1200 Time 2250 8. 2060 1430 Total 500 500 2920 2670 Flow(ft/sec) 202.57 506.43 700.32 627.97 451.44 269.13 11 780 U.H Time 10 12 13 530 14 15 16 Total 1100 910 650 510 S10 500 Flow(ft'/sec) U.H 173.6 118.65 81.03 52.09 28.94 11.57 2.89

Q1: A catchment area is 5 square miles and the total direct Runoff (ED.R-11150 f/ sec). Estimate the base flow for the data shown in the table below? [ 3 1200 Time 2250 8. 2060 1430 Total 500 500 2920 2670 Flow(ft/sec) 202.57 506.43 700.32 627.97 451.44 269.13 11 780 U.H Time 10 12 13 530 14 15 16 Total 1100 910 650 510 S10 500 Flow(ft'/sec) U.H 173.6 118.65 81.03 52.09 28.94 11.57 2.89

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A watershed of (30+X) km2 was subjected to a storm of 2-h duration from which the following information are recorded in Table a) Obtain a Unit Hydrograph for this watershed knowing that the base flow in the stream is estimated at 2 m3/s. b) Derive and plot 6-h Unit Hydrograph for the catchment area. Time (hours) 0 12345678 Discharge (m3/s) 2 15 30 37 30 22 16 12 2
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Problem 2. A storm had 3 successive 6-hr intervals of rainfall magnitude of 3.0, 5.0 and 4.0 cm, respectively. Time from the beginning 0 3 6 9 12 18 24 30 36 48 54 60 66 42 of the storm (hr) 6-hr UH ordinates (cumecs) 0 150 250 450 600 800 700 600 450 320 200 100 50 0 a. Plot the resulting DRH due to 3 rainfall events, assuming a phi-index of 0.20 cm/hr. • Recall that the phi-index represents the rate of infiltration. • The hydrograph plots RUNOFF rates, where runoff = precipitation - losses. Note that the rainfall magnitude is reported as total rainfall depth in 6 hrs, so convert infiltration as a total for every 6 hr period. b. Assuming a baseflow of 30 m3/s, what are the ordinates of the storm hydrograph?
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