Civil Engineering (CE) Exam > Civil Engineering (CE) Questions > In Newmarks influence chart for stress distri...
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In Newmark's influence chart for stress distribution, there are eight concentric circles and ten radial lines. The influence factor of the chart is
- a)0.1
- b)0.01
- c)0.125
- d)0.0125
Correct answer is option 'D'. Can you explain this answer?
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In Newmarks influence chart for stress distribution, there are eight c...
Introduction:
Newmark's influence chart is a graphical tool used in structural engineering to determine the stress distribution in a soil mass due to the application of a surface load. It helps in analyzing the settlement and stress distribution characteristics of the soil.
Understanding the chart:
The Newmark's influence chart consists of concentric circles and radial lines. The concentric circles represent the depth of soil at different levels, while the radial lines represent the influence factors. The influence factor is a ratio that relates the settlement or stress at a particular depth to the applied load at the surface.
Number of concentric circles and radial lines:
In the given question, it is mentioned that there are eight concentric circles and ten radial lines in the chart.
Calculating the influence factor:
To calculate the influence factor for the given chart, we need to use the formula:
Influence Factor = (Number of Radial Lines) / (Number of Concentric Circles)
Using the given values:
Number of Radial Lines = 10
Number of Concentric Circles = 8
Applying the formula:
Influence Factor = 10 / 8 = 1.25
Converting to decimal form:
To convert the influence factor to decimal form, we divide it by 100.
Influence Factor (decimal form) = 1.25 / 100 = 0.0125
Answer:
Therefore, the correct answer is option D) 0.0125, which represents the influence factor of the given Newmark's influence chart for stress distribution.
Newmark's influence chart is a graphical tool used in structural engineering to determine the stress distribution in a soil mass due to the application of a surface load. It helps in analyzing the settlement and stress distribution characteristics of the soil.
Understanding the chart:
The Newmark's influence chart consists of concentric circles and radial lines. The concentric circles represent the depth of soil at different levels, while the radial lines represent the influence factors. The influence factor is a ratio that relates the settlement or stress at a particular depth to the applied load at the surface.
Number of concentric circles and radial lines:
In the given question, it is mentioned that there are eight concentric circles and ten radial lines in the chart.
Calculating the influence factor:
To calculate the influence factor for the given chart, we need to use the formula:
Influence Factor = (Number of Radial Lines) / (Number of Concentric Circles)
Using the given values:
Number of Radial Lines = 10
Number of Concentric Circles = 8
Applying the formula:
Influence Factor = 10 / 8 = 1.25
Converting to decimal form:
To convert the influence factor to decimal form, we divide it by 100.
Influence Factor (decimal form) = 1.25 / 100 = 0.0125
Answer:
Therefore, the correct answer is option D) 0.0125, which represents the influence factor of the given Newmark's influence chart for stress distribution.
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In Newmarks influence chart for stress distribution, there are eight c...
Concept:
Newmark's influence chart for stress distribution
It is a graphical method used to compute vertical, horizontal and shear stress due to uniformly distributed load over an area of any shape or geometry below any point that lies either below or outside the loaded area by equation called Boussinesq's equation.
Stress below any point is calculated as :-
Where, m = No. of concentric circles, n = No. of radial lines, q = Intensity of load, N = Equivalent number of areas covered by plan area.
The product of
is called Influence Factor.
Given
m = 8, n = 10
Therefore, Influence factor (I.F)
I.F. = 0.0125
Newmark's influence chart for stress distribution
It is a graphical method used to compute vertical, horizontal and shear stress due to uniformly distributed load over an area of any shape or geometry below any point that lies either below or outside the loaded area by equation called Boussinesq's equation.
Stress below any point is calculated as :-
Where, m = No. of concentric circles, n = No. of radial lines, q = Intensity of load, N = Equivalent number of areas covered by plan area.
The product of
is called Influence Factor.Given
m = 8, n = 10
Therefore, Influence factor (I.F)
I.F. = 0.0125
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In Newmarks influence chart for stress distribution, there are eight concentric circles and ten radial lines. The influence factor of the chart isa)0.1b)0.01c)0.125d)0.0125Correct answer is option 'D'. Can you explain this answer?
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