Q2) The rainfall data in (mm) for the last (11) years is as follows: 988, 966, 1015, 977, 1045, 1100, 960, 927, 920, 990 and 890 Find : 1) the return period and the probability of (977)mm. 2) the rainfall of return period of (2) years and its probability.

Q2) The rainfall data in (mm) for the last (11) years is as follows: 988, 966, 1015, 977, 1045, 1100, 960, 927, 920, 990 and 890 Find : 1) the return period and the probability of (977)mm. 2) the rainfall of return period of (2) years and its probability.

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 following table represents a rainfall storm (start and end time is given in minutes): a) What is the duration of the storm (min, hr)? b) What is the total rainfall depth of this storm (mm, inch)? c) What is the average intensity of this storm? d) What is the maximum 30 min intensity? e) Expand the table to include: time interval, cumulative time, cumulative rainfall, and rainfall intensity (mm/hr). 5 columns have to be added to this table Time (AM) Rainfall during interval (mm) 6:50 7:00 7:10 5 7:15 7 7:35 20 7:45 8 8:00 8.
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
1. The normal annual rainfall at stations A, B, and C situated in meteorologically homogeneous region are 175 cm, 180 cm, and 150 cm respectively. In the year 2020, station B was inoperative and stations A and C recorded annual precipitations of 150 cm and 135 cm, respectively. What is the estimate annual rainfall at station B in that year?
A rainfall hyetograph shows a) the total volume of rainfall for a storm event; b) the cumulative volume of rainfall with time over the duration of a storm event; c) the variation of rainfall event over a watershed; d) the intensity of volume of rainfall as a function of time; e) none of the above
Q2 (b) A 240-minute storm is recorded with the mass curve in Table Q2-2. (i) Calculate the incremental depth of rainfall in the interval and intensity. (ii) Draw the hyetograph of the storm at 30-minute interval with graph paper in Appendix 1. (iii) Calculate the maximum intensity-duration.
Analysis of rainfall and runoff records for a certain storm over a basin (of area 3210 km²) gave the following data: Rainfall for successive 2 hr periods: 2.5, 6.5 and 4.5 cm/hr. Direct surface discharge at the concentration point for successive 2-hr periods: 400, 1200, 4500, 7700, 12000, 10220, 8260, 3900, 838 and 400 m’. Derive the unit hydrograph for the catchment area.
2. Given below are the rainfall data in station S with missing observations for more than three months. Rainfall data in stations A, B and C as index stations are also given. Reconstitute the annual total and the missing monthly values of rainfall in station S using the normal-ratio method and regression correlation analysis. Index Stations Station S A B C Month Total Normal Total Normal Total Normal Total Normal (2007) (15yrs) 15.4 (2007) (15yrs) 2.1 2.0 (2007) (15yrs) (2007) (15yrs) 2.0 5.9 22.1 January February 5.6 42.4 5.5 74.1 5.5 2.5 7.6 7.3 5.7 2.8 20.1 March 8.0 31.6 14.1 10.0 13.8 2.6 33.5 41.3 April Мay June 22.1 53.3 29.1 8.3 25.3 24.1 37.0 missing missing 430.5 293.6 127.7 127.4 208.4 189.2 141.5 152.9 490.7 524.0 474.2 263.3 550.1 273.9 241.7 277.7 239.8 July August September missing October 489.9 327.8 582.9 314.4 288.4 531.1 596.0 704.2 448.7 455.1 414.6 224.7 296.7 473.4 407.0 292.6 371.1 303.8 339.7 262.7 missing 195.0 88.5 82.0 68.6 205.0 240.1 248.4 November 54.8…
Recorded annual maximum 24-hour rainfall magnitudes at stations KTX are as under : YEAR RAINFALL (cm) 1960 12.0 1961 6.0 1962 4.8 1963 7.9 1964 12.0 1965 14.2 1966 13.6 1967 6.0 1968 3.7 1969 2.9 What is the return period, in years, for a 6.0 cm annual rainfall according to (i) Hazen formula; and (ii) Weibull formula respectively?
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
Show full solution.According to rainfall data collected by a laboratory during storm events, the precipitation level in inches (X) varies jointly with runoff in cubic feet per second (Y). The joint probability mass function (PMF) of both variables are given by the following Table: Y 1 2 3 10 0.05 0.15 0 20 0.1 0.25 0.25 30 0 0.1 0.1 a. Determine and plot the marginal PMF of runoff.b. Determine the correlation coefficient between X and Y.
Using a rainfall of 386 mm for rain gauge Station D, determine the average depth of rainfall that fell for the watershed using the arithmetic average, and Thiessen polygon method. The areas for the Thiessen polygon method are given in the table above for each station. Determine the average depth of rainfall for a watershed using the isohyetal method given the data below. Isohyet (mm) Area Associated (km²) 30 - 40 20 20 - 30 45 10 - 20 35 under 10
During a storm event in a certain period, the rainfall intensity is 4.5 cm/hour and the - index is 2.5 cm/hour. The intensity of effective rainfall (in cm/hour up to one decimal place) for this period is