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.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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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.

 

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.
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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