Problems: 6.1. Given below are the ordinates of a 4hr UH of a basin at Ihr intervals: 6 7 8 9 10 11 12 13 14 Time (hr) 4hr-UH 425 44 60 70 61 52 45 38 32 27 22 18 (m³/s) i) What is the area of the basin? ii) Derive the 2hr and 6hr UH? Pa - 16 la H 15 11 16 8 17 6 18 4 19 2 20 1 21 0

Structural Analysis
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Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Problems:
6.1. Given below are the ordinates of a 4hr UH of a basin at Ihr intervals:
Time (hr)
4
10 11 12 13 14 15
17
18 19
20 21
11
425 44 60 70 61 52 45 38 32 27 22 18 14
8
6
4
4hr-UH
1
(m³/s)
i) What is the area of the basin? ii) Derive the 2hr and 6hr UH?
Ans. i)195.84km² ii) The ordinates of 2hr UH at 1hr intervals are
(0,8,50,80,70,60,52,44,38,32,26,22,18,14,10,8,6,4,
2, and 0 m³/s. The ordinates of 6hr UH at 1hr
intervals are:
(0,2.7.16.7.29.3,40,49.3,57.3,61.3,53.3,45.3.38.7,32.7,27.3,22.7,18,14.7,11.3,8.7,6,4,2.7.1.3,0.7 and
Om³/s).
16
a
Transcribed Image Text:Problems: 6.1. Given below are the ordinates of a 4hr UH of a basin at Ihr intervals: Time (hr) 4 10 11 12 13 14 15 17 18 19 20 21 11 425 44 60 70 61 52 45 38 32 27 22 18 14 8 6 4 4hr-UH 1 (m³/s) i) What is the area of the basin? ii) Derive the 2hr and 6hr UH? Ans. i)195.84km² ii) The ordinates of 2hr UH at 1hr intervals are (0,8,50,80,70,60,52,44,38,32,26,22,18,14,10,8,6,4, 2, and 0 m³/s. The ordinates of 6hr UH at 1hr intervals are: (0,2.7.16.7.29.3,40,49.3,57.3,61.3,53.3,45.3.38.7,32.7,27.3,22.7,18,14.7,11.3,8.7,6,4,2.7.1.3,0.7 and Om³/s). 16 a
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