Question 23 ptsEstimate the total excess/effective rainfall in mm for a 5% AEP storm. The temporal pattern distribution (in %) for a 45-min rainfall duration (5-mintime step) for a South Australian catchment is given below.13.18 9.3 9.3 13.18 20.93 13.9513.18 20.9313.95 4.65 8.53 6.98Consider:Total rainfall depth = 26.2 mmIL = 7.8 mm and CL = 2.6 mm/hrGive 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 avoidrounding errors.

First, we need to calculate the rainfall depth for each time step. This can be done by multiplying…

Answered: Question 2 3 pts Estimate the total…

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

Tutorial 4 Question 1 Based on the given annual rainfall data and the Weibull distribution, 1. develop and plot the relationship between annual rainfall and the frequency, 2. calculate the rainfall intensity with a 10-years return period, 3. calculate the exceedance probability of an event of 125 mm and 4. estimate the design rainfall for a 100-years return period. Year 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 P (mm) 70 121 92 66 74 95 06 91 90 90 | 82 96 Year 1992 1993 1994 1995 1996 997 1998 1999 2000 2001 2002 2003 2004 P (mm) 110 115 100 88 80 87 80 72 103 99 97 98
1. Point rainfalls due to a storm at several rain-gauge stations in a basin are shown in Fig. 1. Determine the mean areal depth of rainfall over the basin by the isohyetal method. Zone I II III IV V VI Aren of bnain 6 cm Isohyetals. 5.5 cm VI 6 cm Ⓒ 7.3 cm O III 8 cm do 9.6 cm 10 cm 7.1 cm 8.9 cm 8.9 cm Ⓒ IV Fig. 1 Area (km²) 6 cm 56 192 420 244 44 58 1014 km² 7.6 cm III 5.1 cm 7.2 cm 8 cm 4 cm Ⓒ-Rain gauge stations 5.2 cm II -6 cm Basin boundary Ⓒ3.6 cm 5.6 cm 4 cm
Estimate the total excess/effective rainfall in mm for a 5% AEP storm. The temporal pattern distribution for a 45-min rainfall duration (5-min time step) for a South Australian catchment of 5.4 km2 is given below. 20 19.17 16.67 12.5 5 10 8.33 3.33 5 Consider: IL = 11.5 mm and CL = 1.7 mm/hr Total rainfall depth = 30.1 mm Plot the effective rainfall hyetograph of this Question in mm.
Given the following depths of rainfall for a 50-min storm, graph the storm hyetograph, with the ordinates in in./hr. Storm time (min) Rainfall depth (in.) What is the maximum 30-min intensity (in./hr)? 10 0.05 20 0.20 30 0.30 40 0.25 50 0.10
3. In a storm of 90 minutes duration, the incremental rainfall at various time intervals is given below. a. Maximum incremental depth (in mm) b. Maximum intensity (in mm/hr). TIME (minutes) 0 ID 20 30 40 50 60 70 80 90 CUMULATIVE (mm) C 8.5 14.5 21.7 27.9 33.0 35.1 36.2 37.0
1. Find area precipitation by isohyetal method for a certain catchment area given the following data Isohyets, cm P 6.8 S 4 PS 3 12/2 P1.5 DEPARTMENT OF CIVIL ENGINEERING CCB 433 - Fluid Mechanics for Civil Engineers Tutorial 1 August 2022 O Time, min Rainfall, em + 602 Area enclosed within catchment boundary, km 2. A catchment has six rain gauge stations. In a year, the annual rainfall recorded by the gauges are as follows: Station 10 0 A F 102.7 Rainfall, mm 86.3 For a 10% error in the estimation of mean rainfall, calculate the optimum number of stations in the catchment 90 3.18 6816 3. From the precipitation data given, estimate cumulative rainfall and rainfall intensity. Time, min 40 60 50 0.32 0.37 0.43 Rainfall, cm - 10 0.18 20 97 213 410 602 633 100 1.65 B C D E 108.9 154.2 78.3 93.1 +00 2+15 2 20 0.21 1975 30 0.26 120 130 0.26 110 0.81 0.52 P = A₁ 6+5 2 Athal-1975 P₂ • (Pi+ P² ] + An [Po+Pr+ A₂ Atotal + (33 +97 140 0.42 2 150 0.36 5+4 70 80 0.64 1.14 160 170 0.28 0.19 + 213 413…
Q2. (a) A catchment area has 5 rain gauge stations with annual recorded data for in Table Q2-1. year 2010 (i) Determine the standard error in the estimation of mean rainfall. (ii) Calculate the optimum number of rain gauge for a 10% error of mean rainfall. (6 marks) (2 marks) (iii) In year 2020, mean rainfall data is obtained with 1100mm for station A, 950mm for station B, 1250mm for station C, 1150mm for station D, but station E is inoperative. (2 marks) Estimate the mean rainfall in station E by using normal ratio method.
Point rainfalls due to a storm at several rain-gauge stations in a basin are shown in Fig. 3.16. Determine the mean areal depth of rainfall over the basin. 8 cm 6 cm Area(km') 410 zone 8 cm 900 zana VI N (9.2) 2850 1750 720 550 II IV O (7.4 cm D (9.2 V A (8.6) (8.5) L (5.2) VI H (5) E (138) (5.6) K (7.8 Area of the Basin = 7180 km B (7 F (10.4 I (11.2) J (9.0 10 om zone Figure 3.16 Isohyetal Map
Question Three (3a) In a catchment area, four rain gauge stations namely Station A, B, C and D are installed for recording rainfall data. The normal annual rainfall of these four stations is 78, 63, 73.5 and 90 cm, respectively. The rain gauge station A does not have the annual rainfall observation for one year during total length of record, because of disorder of the rain gauge. Calculate the missing value of rainfall data of rain gauge station A, if the annual rainfall recorded at other three stations for that particular year was 88, 70.5 and 78 cm at B, C and D, respectively. Take the variation in normal rainfall data to be more than 15% at all the four rain gauge stations. (3b) State and explain the four types of geological formations of groundwater 1
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.
1. Find area precipitation by isohyetal method for a certain catchment area given the following data Isohyets, cm P 6.8 5 4 PS 3 12/2 P1.5 DEPARTMENT OF CIVIL ENGINEERING CCB 433 - Fluid Mechanics for Civil Engineers Tutorial 1 August 2022 0 Time, min Rainfall, em + 602 Area enclosed within catchment boundary, km 2. A catchment has six rain gauge stations. In a year, the annual rainfall recorded by the gauges are as follows: Station 10 0 A F Rainfall, mm 86.3 102.7 For a 10% error in the estimation of mean rainfall, calculate the optimum number of stations in the catchment 90 3.18 6816 3. From the precipitation data given, estimate cumulative rainfall and rainfall intensity. Time, min 40 60 50 0.32 0.37 0.43 Rainfall, cm - B C D 108.9 154.2 78.3 10 0.18 20 97 213 410 602 633 100 1.65 +00 2+15 2 20 0.21 1975 30 0.26 120 130 0.26 110 0.81 0.52 6+5 2 P = A₁ Athal-1975 P₂ • (Pi+ P² ] + An [Po+Pr+ A₂ Atotal + (33 E 93.1 +97 140 0.42 2 150 0.36 5+4 70 80 0.64 1.14 160 170 0.28 0.19 + 213 413…
Q2) The rainfall data in (mm) for the last (10) years is as follows: 988, 966, 1015, 977, 1045, 1100, 960, 927, 920, and 890 Find: 1) the return period and the probability of (977) mm. 2) the rainfall of return period of (3) years and its probability.

SEE MORE QUESTIONS

Recommended textbooks for you

Structural Analysis

Civil Engineering

ISBN:

9781337630931

Author:

KASSIMALI, Aslam.

Publisher:

Cengage,

Structural Analysis (10th Edition)

Civil Engineering

ISBN:

9780134610672

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Principles of Foundation Engineering (MindTap Cou…

Civil Engineering

ISBN:

9781337705028

Author:

Braja M. Das, Nagaratnam Sivakugan

Publisher:

Cengage Learning

Structural Analysis

Civil Engineering

ISBN:

9781337630931

Author:

KASSIMALI, Aslam.

Publisher:

Cengage,

Structural Analysis (10th Edition)

Civil Engineering

ISBN:

9780134610672

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Principles of Foundation Engineering (MindTap Cou…

Civil Engineering

ISBN:

9781337705028

Author:

Braja M. Das, Nagaratnam Sivakugan

Publisher:

Cengage Learning

Fundamentals of Structural Analysis

Civil Engineering

ISBN:

9780073398006

Author:

Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning

Publisher:

McGraw-Hill Education

Sustainable Energy

Civil Engineering

ISBN:

9781337551663

Author:

DUNLAP, Richard A.

Publisher:

Cengage,

Traffic and Highway Engineering

Civil Engineering

ISBN:

9781305156241

Author:

Garber, Nicholas J.

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS