Q1/ The below frequency table shows the compressive strength values for testedconcrete cubes. Construct a histogramCompressive strength (N/mm2)25-27Number of cubes128-3031-331034-36837-39440-421Q2/ The number of hours worked by 10 employees of small building firm during aweek were:4546 34 47444246424344Calculate the mean, median and standard deviation of the hours worked by theemployeesQ3/ The following data represent the lifetimes of light bulbs (in months), frequencydistribution was obtained; Find the mean, variance and standard deviation.Class limitsfrequency10-2021-311032-42343-53754-641865-757Q4/ A- If p (A) =0.4, p(B)= 0.2 and p (An B) = 0.1 determine the followingpropertiesP (A'), P (A U B), P (A U B'), P (A/B)B/ Find Combinations (*)

Calculating the average compressive strength values : Compressive strength (N/mm2) Average…

Q1/ The below frequency table shows the compressive strength values for tested concrete cubes. Construct a histogram Compressive strength (N/mm²) 25-27 Number of cubes 1 6. 28-30 31-33 10 34-36 8 37-39 4 40-42 1

Q1/ The below frequency table shows the compressive strength values for tested concrete cubes. Construct a histogram Compressive strength (N/mm²) 25-27 Number of cubes 1 6. 28-30 31-33 10 34-36 8 37-39 4 40-42 1

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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Concept explainers

Material Properties

Construction in civil engineering demands high strength, durability, and longevity. These targets can be achieved by better design and analysis, along with the correct choice of materials. Different materials have different properties and hence, they respond and performs differently under the various condition of external loadings. It is therefore a critical task of an engineer to select the right material based on the property that the material is supposed to function in real-time. When speaking about the property, there are different categories of material properties like chemical property, physical property, mechanical property, electrical property, magnetic property, thermal property, etc. These material properties form the basis of material selection in various applications.

Question

Q1/ The below frequency table shows the compressive strength values for tested
concrete cubes. Construct a histogram
Compressive strength (N/mm2)
25-27
Number of cubes
1
28-30
31-33
10
34-36
8
37-39
4
40-42
1
Q2/ The number of hours worked by 10 employees of small building firm during a
week were:
45
46 34 47
44
42
46
42
43
44
Calculate the mean, median and standard deviation of the hours worked by the
employees
Q3/ The following data represent the lifetimes of light bulbs (in months), frequency
distribution was obtained; Find the mean, variance and standard deviation.
Class limits
frequency
10-20
21-31
10
32-42
3
43-53
7
54-64
18
65-75
7
Q4/ A- If p (A) =0.4, p(B)
= 0.2 and p (An B) = 0.1 determine the following
properties
P (A'), P (A U B), P (A U B'), P (A/B)
B/ Find Combinations (*)

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