Analysis of data on maximum one-day rainfall depth at a station indicated that a depth of 300 mm had a return period of 40 years. Determine the probability of a one-day rainfall depth equal to or greater than 300 mm at the same station occurring. (i) Twice in 25 successive years, (ii) Once in 30 successive years, (iii) At least once in 20 successive years, and (iv) Once in 20 successive years

Analysis of data on maximum one-day rainfall depth at a station indicated that a depth of 300 mm had a return period of 40 years. Determine the probability of a one-day rainfall depth equal to or greater than 300 mm at the same station occurring. (i) Twice in 25 successive years, (ii) Once in 30 successive years, (iii) At least once in 20 successive years, and (iv) Once in 20 successive years

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

The exceedance series of 30-min duration rainfall values has a mean of 28 mm and standard deviation of 8.71 mm. Determine the 100-year 30-min duration rainfall value assuming the rainfall distribution follows Gumbel (extreme value type I) distribution.
Note:hand written solution should be avoided.
Rainfall data of a certain locality is given below. Compute the maximum depth and Maximum intensity with respect to the given time. Time July 3, 1830 July 3, 1830 July 3, 1830 July 3, 1830 July 3, 1830 11:30am 9:30am 10:00am 10:30am 11:00am Recorded P (mm) 0 6 12 3 15 July 3, 1830 12:00nn 7 July 3, 1830 July 3, 1830 July 3, 1830 July 3, 1830 12:30pm 1:30pm 2:00pm 1:00pm 6 3 1 1
Question 2 3 pts Estimate the total excess/effective rainfall in mm for a 5% AEP storm. The temporal pattern distribution (in %) for a 45-min rainfall duration (5-min time step) for a South Australian catchment is given below. 13.18 9.3 9.3 13.18 20.93 13.95 13.18 20.93 13.95 4.65 8.53 6.98 Consider: Total rainfall depth = 26.2 mm IL = 7.8 mm and CL = 2.6 mm/hr Give your answer to two decimal places. Note: When presenting your answers, round your answer as instructed, but for your calculation, use as many decimal places as you have to avoid rounding errors.
Analysis of data on maximum one-day rainfall depth at Madras indicated that a depth of 280 mm had a return period of 50 years. Determine the probability of a one- day rainfall depth equal to or greater than 280 mm at Madras occuring (a) once in 20 successive years (b) two times in 15 successive years and (c) at least once in 20 successive years.
Conduct a single-station flood-frequency analysis on annual flood peaks of a small stream as given below has acoefficient of skewness equal to zero. Do all necessary steps for conducting such an analysis including the use of theWeibull plotting positions. Based on the single-station flood-frequency analysis plot, determine the return period of100 cfs flood peak. Also, obtain the flood peaks for return periods of 10-year and 5-year. Year 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993Annual Flood Peak (cfs) 300 60 80 100 40 800 400 30 700 80
A flood was measured from a catchment of 500 square kilometers. The direct runoff from this flood was found to be 3.25 cm. The time distribution of the rainfall is given below in Table. Find the W index for this storm by considering 0.5 cm Interception and depression storage losses. Also find total infiltrated volume of water. Q.2 Time (hr.) 4 7 Total rainfall 1.2 1.45 2.2 3.65 5.09 3.18 1.97 18.74
6- Maximum annual rainfall depth data are fitted with a distribution that is positively skewed (i.e., it has a longer tail to the right). If the mean value for the distribution is 4.22 in, then the rainfall depth with return period 2 years will be (use the next page table): (5 p) (A) Strictly less than 4.22 in (B) Equal to 4.22 in (C) Strictly larger than 4.22 in (D) None of the above
i) Based on the unit hydrograph in Table Q4b, construct its S-Curve and develop a 1-hour Unit hydrograph. ii) Based on the unit hydrograph in Table Q4b, construct a new natural hydrograph that can be produced by a series of effective rainfall of 2.5cm, 1.1cm, and 0.3cm that occurred at one-hour intervals between one event and another.
The annual maximum flood magnitude in a river shows a mean of 170 m³/s and a standard deviation of 113 m³/s. Assuming the uncertainty can be described by a normal distribution, what is the probability that the annual maximum flood magnitude would exceed 28 m3/s? Determine the flood magnitude with a return period of 100 years.