Q2:The table below represents the vertical coordinates of the hydrograph of a rainstorm over a mountainous areaof 770 km as a result of a 6 hour rainstorm. Derive the vertical coordinates of a standard 6 hour hydrographand then specify:1- The vertical coordinate value of 6 hours standard hydrograph at the time of 18 hours2- The value of the vertical coordinate of 6 hours of standard hydrograph at the time of 36 hours.3- The value of the vertical coordinate of 6 hours of standard hydrograph at the time of 66 hours.the time72 66 60 54 48 42 36 30 24 18 12 600)42 50 70 100 145 205 270 350 400 360 215 65 4040 40 4042 42 42 42 41 41 41 40 40 40Discharge(m3/s)Flow(m3/s)

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e table below represents the vertical coordinates of the hydrograph of a rainstorm over a mountain 770 km as a result of a 6 hour rainstorm. Derive the vertical coordinates of a standard 6 hour h and the 1- The vertical coordinate value of 6 hours standard hydrograph at the time of 2- The value of the vertical coordinate of 6 hours of standard hydrograph at the time of 3- The value of the vertical coordinate of 6 hours of standard hydrograph at the time o 42 36 30 24 18 12 6 2 66 60 54 48

e table below represents the vertical coordinates of the hydrograph of a rainstorm over a mountain 770 km as a result of a 6 hour rainstorm. Derive the vertical coordinates of a standard 6 hour h and the 1- The vertical coordinate value of 6 hours standard hydrograph at the time of 2- The value of the vertical coordinate of 6 hours of standard hydrograph at the time of 3- The value of the vertical coordinate of 6 hours of standard hydrograph at the time o 42 36 30 24 18 12 6 2 66 60 54 48

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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Q2: The table below represents the vertical coordinates of the hydrograph of a rainstorm over a mountainous area of 770 km2 as a result of 6 hours of a rainstorm. Derive the vertical coordinates of a standard hydrograph 6 hour and then select: 1- The vertical coordinate value of the 6 hour standard hydrograph at the time of 18 hours. Standard at a time of 36 hours. gr-The vertical coordinate value of 6 hydro hours. 3- The value of the vertical coordinate of 6 hours of standard hydrograph at the time of 66 hours. time 72 66 60 54 48 42 36 30 24 18 12 6 0 (hour) discharge 42 50 70 100 145 205 270 350 400 360 215 65 40 (m3/s) flow baseband 42 42 42 42 41 41 41 40 40 40 40 40 40 (m3/s)
Hydrology The rain gauges in the corresponding drainage area ,shows the rainfall recorded at these stations due to a storm .Determine the average precipitation for the drainage area using Thiessen's polygon method. Rainfall (cm) 5.4 Gauge Station Area (sq km) A 739 B 3.3 686 C 2.1 734 D 3.1 473 E 5.2 638 F 3.8 618 G 4.5 1208
Q2: The table below represents the vertical coordinates of the hydrograph of a rainstorm over a mountainous area of 770 km2 as a result of a 6 hour rainstorm. Derive the vertical coordinates of a 6 hour standard hydrograph and then determine: 1- The value of the vertical coordinate for 6 hours of a standard hydrograph at a time of 18 hours. 2-The value of the vertical coordinate of 6 hours standard hydrograph at the time of 36 hours 3-The value of the vertical coordinate of 6 hours of st and ard hydrograph at the time of 66 hours the time 72 66 60 54 48 42 36 30 24 18 12 60 (hour) discharge 42 50 70 100 145 205 270 350 400 360 215 65 40 (m3/s) flow 42 42 42 42 41 baseband 41 41 40 40 40 40 40 40 40 (m3/s)
Q2: The table below represents the vertical coordinates of the hydrograph of a rainstorm over a mountainous area of 770 km2 as a result of a 6 hour rainstorm. Derive the vertical coordinates of a 6 hour standard hydrograph and then determine: 1- The value of the vertical coordinate for 6 hours of a standard hydrograph at a time of 18 hours. 2-The value of the vertical coordinate of 6 hours standard hydrograph at the time of 36 hours 3-The value of the vertical coordinate of 6 hours of standard hydrograph at the time of 66 hours. the time 72 66 60 54 54 48 42 36 30 24 18 12 6 0 48 (hour) discharge 42 50 70 100 145 205 270 350 400 360 215 65 40 (m3/s) flow 42 42 42 42 42 41 41 41 40 40 40 40 40 40 baseband (m3/s)
Table Q4 shows the details of the storm hydrograph with the corresponding direct discharge. The given time interval is 3 hours between the readings. Q4 Table Q4 Excess rainfall (mm) 11 Time (hr) Direct discharge (m³/s) 3 70 28 230 9. 30 600 12 1400 15 2380 18 3300 21 4880 24 6320 27 3305 30 350 33 300 36 100 By using the convolution method, determine the unit hydrograph ordinates. (a) (b) Illustrate the unit hydrograph.
Ex (3): The following table shows the mean values of measured annual precipitation in 5 rain gauges located in a certain catchment. Determine the average rainfall by Thiessen method. Note: each square on the grid corresponds to a distance of 1 km. 1 2 15 Station Annual Precipitation (mm) P1 800 P2 600 P3 900 P4 400 PS 200
2.15 The mass curve of rainfall in a storm of total duration 90 minutes is given below. (a) Draw the hyetograph of the storm at 10 minutes time step. (b) Plot the maximum intensity-duration curve for this storm. (c) Plot the maximum depth-duration curve for the storm. Time (Minutes) |80 10 20 30 40 50 60 70 90 Cumulative rainfall 0 |(mm) 2.1 6.3 14.5 21.7 27.9 33.0 35.1 36.2 37.0
1: Following are the ordinates of a storm hydrograph of a river draining a catchment area of 423 kmz due to a 6h storm.. Derive the ordinates of 6h unit hydrograph & plot the same. Time in hr -6 6 12 18 24 30 36 42 48 Stream flow 10 10 30 87.5 115.5 102.5 85 71 59 475 m/s Time in hr 54 60 66 72 78 84 90 96 102 Stream flow 39 31.5 26 21.5 17.5 15 12.5 12 12 m'/s
The following data were collected during a stream-gauging operation in a river. Compute the discharge. Velocity (m/s) Distance from left water edge (m) Depth (m) at 0.2 d at 0.8 d 0.0 0.0 0.0 1.5 1.3 0.60 0.40 3.0 2.5 0.90 0.60 4.5 1.7 0.70 0.50 6.0 1.0 0.60 0.40 7.5 0.4 0.40 0.30 9.0 0.0 0.0 0.0
Q1 Flow The table below represents the vertical coordinates of the hydrograph of a rainstorm over a mountainous area of 770 km2. As a result of a 6 hour rainstorm, derive the vertical coordinates of a 6 hour standard hydrograph and then specify 1- The value of the vertical coordinate for 6 hours of a standard hydrograph at a time of 18 hours. 2- The value of the vertical coordinate of 6 hours of standard hydrograph at the time of 36 hours. 3- The value of the vertical coordinate of 6 hours of standard hydrograph at the time of 66 hours. Time 72 66 60 54 48 42 36 30 24 18 12 60 (Hour) Discharge 42 50 70 100 145 205 270 350 400 360 215 65 40 (m3/s) Basal 42 42 42 42 41 41 41 40 40 40 40 40 40 Flow (m3/s)
Hydrology Rain gauge X was out of operation for a month during which there was a storm. The rainfall amounts at three adjacent stations A, B, and C were 37, 42 and 49 mm. The average annual precipitation amounts for the gauges are X = 694, A=726, B= 752 and C = 760mm. Using the Arithmetic/Mathematical method, estimate the amount of rainfall for gauge X.
Q1/ The table below gives the ordinates of a stream, flow hydrograph at the outlet of a catchment of an area 600 km2 due to a storm that is believed to have duration of 3 hours. Assuming a constant base flow of 50 m /s, compute the ordinates of a 3-hour UH for the catchment. Time (hr) 3 9 12 15 18 21 24 27 30 33 36 Flow 50 600 950 700 530 400 310 240 190 150 110 80 50 (m³/s)