(50%)2. In a storm of 210 minutes duration, the incremental rainfall at various time interval is given below. Time since 30 60 90 120 150 180 210 start of the storm (minutes) Incremental 1.75 4.50 2.50 1.50| 0.75 2.25 6.00 rainfall in the time interval (cm) a). Obtain the ordinates of the hyetograph and represent the hyetograph as a bar chart with time in chronological order in the x-axis. b). Obtain the ordinates of the mass curve of rainfall for this storm and plot the same. What is the average intensity of storm over the duration of the storm.

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Chapter2: Loads On Structures
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(50%)2. In a storm of 210 minutes duration, the incremental rainfall at various time interval is given
below.
Time since
start of the
30
60
90
120
150
180
210
storm
(minutes)
Incremental 1.75
rainfall in
the time
2.25
6.00
4.50
2.50
1.50
0.75
interval
(cm)
a). Obtain the ordinates of the hyetograph and represent the hyetograph as a bar chart with time in
chronological order in the x-axis.
b). Obtain the ordinates of the mass curve of rainfall for this storm and plot the same. What is the
average intensity of storm over the duration of the storm.
Transcribed Image Text:(50%)2. In a storm of 210 minutes duration, the incremental rainfall at various time interval is given below. Time since start of the 30 60 90 120 150 180 210 storm (minutes) Incremental 1.75 rainfall in the time 2.25 6.00 4.50 2.50 1.50 0.75 interval (cm) a). Obtain the ordinates of the hyetograph and represent the hyetograph as a bar chart with time in chronological order in the x-axis. b). Obtain the ordinates of the mass curve of rainfall for this storm and plot the same. What is the average intensity of storm over the duration of the storm.
(50%)1. Test the consistency of the 22 years of data of the annual precipitation measured at station A.
Rainfall data for station A as well as the average annual rainfall measured at a group of eight (8)
neighboring stations located in a meteorologically homogeneous region are given as follows:
Year
Annual
Year
Annual
Average
Annual
Average
Annual
Rainfall of 8
Stations
Rainfall of
Rainfall of
Station A
Rainfall of 8
Station A
(mm)
Stations
(mm)
groups (mm)
groups (mm)
1946
177
143
1957
158
164
1947
144
132
1958
145
155
1948
178
146
1959
132
143
1949
162
147
1960
95
115
135
1950
194
161
1961
148
1951
168
155
1962
142
163
1952
196
152
1963
140
135
1953
144
117
1964
130
143
1954
160
128
1965
137
130
1955
196
193
1966
1967
130
146
1956
141
156
163
161
a). In what year is a change in regime indicated?
b). Adjust the recorded data at station A and determine the mean annual precipitation.
Transcribed Image Text:(50%)1. Test the consistency of the 22 years of data of the annual precipitation measured at station A. Rainfall data for station A as well as the average annual rainfall measured at a group of eight (8) neighboring stations located in a meteorologically homogeneous region are given as follows: Year Annual Year Annual Average Annual Average Annual Rainfall of 8 Stations Rainfall of Rainfall of Station A Rainfall of 8 Station A (mm) Stations (mm) groups (mm) groups (mm) 1946 177 143 1957 158 164 1947 144 132 1958 145 155 1948 178 146 1959 132 143 1949 162 147 1960 95 115 135 1950 194 161 1961 148 1951 168 155 1962 142 163 1952 196 152 1963 140 135 1953 144 117 1964 130 143 1954 160 128 1965 137 130 1955 196 193 1966 1967 130 146 1956 141 156 163 161 a). In what year is a change in regime indicated? b). Adjust the recorded data at station A and determine the mean annual precipitation.
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