2.6 Represent the annual rainfall data of station A given below as a bar chart with time inchronological order. If the annual rainfall less than 75% of long-term mean is takento signify meteorological drought, identify the drought years and suitably display thesame in the bar chart.Year1961 1962 1963 1964 1965 1966 1967 1968 1969 1970Annual rain 760 750 427 380 480 620 550 640624 500(mm)Year1971 1972 1973 1974 1975 1976 1977 1978 1979 1980Annual rain 400(mm)356700580520102525900600400

Given:- The annual rainfall data of station A is given The significant meteorological drought value…

Answered: 2.6 Represent the annual rainfall data…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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The ordinates of a 12-h unit hydrograph are as given below: Time (h) 0 12 12-h UH 0 32 24 36 48 60 72 84 96 130 126 98 75 50 77 69 108 30 120 132 15 70 ordinates (m3/s) A storm had three successive 12-h intervals of rainfall magnitude of 3.5, 10.2 and 20.3 cm, respectively. Assuming a q- index of 0.15 cm/h and a base flow of 50 m³/s, determine and plot the resulting (flood) hydrograph of flow.
Eight rainguage stations are installed in a catchment and they recorded rainfalls of certain magnitudes. The mean value of rainfalls is 120 cm and standard deviation is 35 cm. The percentage of accuracy associated in the estimation of average rainfall is
2) Construct a rainfall hyetograph (rainfall intensity, in mm/hr, versus time, in minutes) if the total rain in Question 1 above has the following temporal distribution (Table 1). Sketch the hyetograph. Table 1: Temporal Distribution Time (min) 0-5 5-10 10-15 15-20 20-25 25-30 % rainfall per period 12.5 12.5 38 13.5 13.5 10
Figure 2.2 shows a catchment with seven rain guage stations inside it and three stations outside. The rainfall recorded by each of these stations are indicated by the figure. Draw the figure to an enlarged scale and calculate the mean precipitation method by (a) Isohyetal method and by (b) Arithmetic-mean method.
Annual rainfall at a given location can be described by a lognormal distribution. The transformed mean in the log domain is 4.83 and log- transformed standard deviation is 0.149. Estimate the magnitude of the 50-year annual rainfall. O 146.0 O 125.21 O 180,14 None of the choices 170.72
I need the correct answer
After arranging rainfall data in descending order, the order (m) of 8 cm annual rainfall is 5. The data is 24-hour rainfall of 15 years. Using Hazen formula, the return period (in years) for 8cm rainfall will be:
Table Q4 shows the details of the storm hydrograph with the corresponding direct discharge. The given time interval is 3 hours between the readings. Q4 Table Q4 Excess rainfall (mm) 11 Time (hr) Direct discharge (m³/s) 3 70 28 230 9. 30 600 12 1400 15 2380 18 3300 21 4880 24 6320 27 3305 30 350 33 300 36 100 By using the convolution method, determine the unit hydrograph ordinates. (a) (b) Illustrate the unit hydrograph.
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…
For the following precipitation data, compute the average precipitation by; The arithmetic mean average method Thiessen Polygon method
The annual precipitation at stations A, B, C and D are given below. In 1981, station D was permanently relocated to a new location. Determine the values of precipitation for the adjusted years by using a double mass curve
Figure 2.2 shows a catchment with seven rain guage stations inside it and three stations outside. The rainfall recorded by each of these stations are indicated by the figure. Draw the figure to an enlarged scale and calculate the mean precipitation method by Thiessen-mean method.

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