According to the IDF curve given below, predict the precipitation intensity for a rainfall event with a return period(s) of 50 year and 100 year in the duration(s) of 80 minutes and 90 minutes, respectively.
According to the IDF curve given below, predict the precipitation intensity for a rainfall event with a return period(s) of 50 year and 100 year in the duration(s) of 80 minutes and 90 minutes, respectively.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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According to the IDF curve given below, predict the precipitation intensity for a rainfall event with a return period(s) of 50 year and 100 year in the duration(s) of 80 minutes and 90 minutes, respectively.
Transcribed Image Text:The image displays a graph titled "Rainfall Intensity-Duration-Frequency Curves for Singapore Island." The graph is used to predict precipitation intensity for different durations and return periods.
**Axes Details:**
- The horizontal axis represents "Rainfall Intensity" measured in millimeters per hour.
- The vertical axis represents "Time" in minutes, ranging from 10 to 120.
**Curves:**
- Several curves correspond to different return periods, such as 2 years, 5 years, 10 years, 25 years, 50 years, and 100 years.
- Each curve shows how the intensity of rainfall changes with duration for a specific return period.
**Task:**
- Use the IDF (Intensity-Duration-Frequency) curve to predict the precipitation intensity for a rainfall event:
- With a 50-year return period at a duration of 80 minutes.
- With a 100-year return period at a duration of 90 minutes.
The user would trace the corresponding curve for the specified return period and duration to find the rainfall intensity on the graph.
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