Table provides the incremental rainfall depth every 10 minutes from a rainfall station during a total of 2 hours storm duration. a) Determine the maximum depth for storm duration of 20, 40, 80, 100 and 120 minutes and plot the maximum depth-duration curve. b) Determine the maximum rainfall intensity for storm duration of 1 hour. c) Explain how one can determine the probability of a maximum rainfall intensity? Time (min) Incremental 10 20 30 40 50 60 70 80 90 100 110 120 rainfall at 10 minutes (mm) 7 6. 10 12 16 6. 3 1

Table provides the incremental rainfall depth every 10 minutes from a rainfall station during a total of 2 hours storm duration. a) Determine the maximum depth for storm duration of 20, 40, 80, 100 and 120 minutes and plot the maximum depth-duration curve. b) Determine the maximum rainfall intensity for storm duration of 1 hour. c) Explain how one can determine the probability of a maximum rainfall intensity? Time (min) Incremental 10 20 30 40 50 60 70 80 90 100 110 120 rainfall at 10 minutes (mm) 7 6. 10 12 16 6. 3 1

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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Given the following depths of rainfall for a 50-min storm, graph the storm hyetograph, with the ordinates in in./hr. Storm time (min) Rainfall depth (in.) What is the maximum 30-min intensity (in./hr)? 10 0.05 20 0.20 30 0.30 40 0.25 50 0.10
Question 1 Plot the hyetograph of 20 min for this storm event over a specified watershed using the rainfall data given in the Table Q1. Indicate what is the storm duration and the total quantity of rainfall X=3 over this catchment area. Table Q1 - Rainfall data Time (hr) 10:00 10:20 10:40 11:00 11:20 11:40 12:00 Rainfall in successive 9.0+X 25+X 50+X 75+X 100+X 100+X intervals (mm)
Question 7 The total rainfall hyetograph of a storm, which took place over a basin is given below. Ordinates of Total Storm Hydrograph (TSH) obtained for the basin is given in the table below. The baseflow is constant and is 4 m³/s. If the depth of excess rainfall is 8 cm, determine: i (mm/hr) a) depth of direct runoff, b) depth of infiltrated water, c) -index, d) equation of surface runoff hydrograph in terms of UH₂ and lag times. e) UH2 ordinates of this basin, f) area of the basin. t TSH (hr) (m³/s) 0 4 24.68 뜨뜨뜨뜨뜨뜨 10 36 40 12 39 16 8 14 31 20 16 22 26 22 18 13 24 8 COL 4 5 20 Els 15 10 5 028 12 16 t (hr)
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A small urban watershed located in north of Iraq has four rainfall gauges as located in the figure below. The total rainfall recorded at each gauge during a storm event is listed. Compute the average rainfall for this storm using Thiesson method. Raingauge ABCD А с Rainfall (cm) 8.28 7.42 7.65 7.75 B D 4 km 4 km 1 km 4 km 4 km 1 km 3 km