A A catchment is having total area of 60 hectares. The rainfall intensity relation with duration for this catchment is given by the relation I = 100/(t+20), where I is in cm/h and t is duration of rain in min. (a) Draw the graph of rainfall intensity relation with duration at 10 min interval? (b) What will be the storm water runoff from this catchment if the average imperviousness factor is 0.63, and time of concentration is 35 min? (c) If population density of the area is 350 persons per hectare and water consumption is 170 LPCD, what will be the design discharge for separate system and combined system?
A A catchment is having total area of 60 hectares. The rainfall intensity relation with duration for this catchment is given by the relation I = 100/(t+20), where I is in cm/h and t is duration of rain in min. (a) Draw the graph of rainfall intensity relation with duration at 10 min interval? (b) What will be the storm water runoff from this catchment if the average imperviousness factor is 0.63, and time of concentration is 35 min? (c) If population density of the area is 350 persons per hectare and water consumption is 170 LPCD, what will be the design discharge for separate system and combined system?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A catchment is having total area of 60 hectares. The rainfall intensity relation with duration for this catchment
is given by the relation I = 100/(t+20), where I is in cm/h and t is duration of rain in min. (a) Draw the graph
of rainfall intensity relation with duration at 10 min interval? (b) What will be the storm water runoff from
this catchment if the average imperviousness factor is 0.63, and time of concentration is 35 min? (c) If
population density of the area is 350 persons per hectare and water consumption is 170 LPCD, what will be
the design discharge for separate system and combined system?
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