Question Three (3a) In a catchment area, four rain gauge stations namely Station A, B, C and D are installed for recording rainfall data. The normal annual rainfall of these four stations is 78, 63, 73.5 and 90 cm, respectively. The rain gauge station A does not have the annual rainfall observation for one year during total length of record, because of disorder of the rain gauge. Calculate the missing value of rainfall data of rain gauge station A, if the annual rainfall recorded at other three stations for that particular year was 88, 70.5 and 78 cm at B, C and D, respectively. Take the variation in normal rainfall data to be more than 15% at all the four rain gauge stations. (3b) State and explain the four types of geological formations of groundwater 1

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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Question Three
(3a) In a catchment area, four rain gauge stations namely Station A, B, C and D are installed for
recording rainfall data. The normal annual rainfall of these four stations is 78, 63, 73.5 and 90
cm, respectively. The rain gauge station A does not have the annual rainfall observation for one
year during total length of record, because of disorder of the rain gauge. Calculate the missing
value of rainfall data of rain gauge station A, if the annual rainfall recorded at other three stations
for that particular year was 88, 70.5 and 78 cm at B, C and D, respectively. Take the variation in
normal rainfall data to be more than 15% at all the four rain gauge stations.
(3b) State and explain the four types of geological formations of groundwater
1
Transcribed Image Text:Question Three (3a) In a catchment area, four rain gauge stations namely Station A, B, C and D are installed for recording rainfall data. The normal annual rainfall of these four stations is 78, 63, 73.5 and 90 cm, respectively. The rain gauge station A does not have the annual rainfall observation for one year during total length of record, because of disorder of the rain gauge. Calculate the missing value of rainfall data of rain gauge station A, if the annual rainfall recorded at other three stations for that particular year was 88, 70.5 and 78 cm at B, C and D, respectively. Take the variation in normal rainfall data to be more than 15% at all the four rain gauge stations. (3b) State and explain the four types of geological formations of groundwater 1
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