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Grain size distribution curves are usually plotted between,
  • a)
    percent finer by weight on abscissa (arithmetic scale) and effective diameter on ordinate (logarithmic scale)
  • b)
    percent finer by weight on ordinate (arithmetic scale) and size of soil particle in mm on abscissa (logarithmic scale)
  • c)
    percent finer by weight on abscissa (arithmetic scale) and effective diameter on ordinate (arithmetic scale)
  • d)
    percent weight on ordinate (arithmetic scale) and size of soil particle in mm on abscissa (logarithmic scale)
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Grain size distribution curves are usually plotted between,a)percent f...
Grain size distribution curves- results of grain size analysis is represented on these curves. They are usually plotted between percent finer by weight on ordinate (arithmetic scale) and size of soil particle in mm on abscissa(logarithmic scale).
percent finer by weight = aggregate or cumulative weight as a percentage of total weight, of all grains smaller than any given diameter.
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Most Upvoted Answer
Grain size distribution curves are usually plotted between,a)percent f...
Grain size distribution curves are usually plotted between:
Option B: Percent finer by weight on the ordinate (arithmetic scale) and size of soil particle in mm on the abscissa (logarithmic scale)

Here's a detailed explanation of why option B is the correct answer:

1. Introduction:
Grain size distribution curves are graphical representations of the grain size distribution of a soil sample. They provide valuable information about the particle size composition of the soil and are commonly used in geotechnical engineering.

2. Purpose of the plot:
The purpose of plotting the grain size distribution curve is to visualize the distribution of soil particles of different sizes in the soil sample. This information is essential for understanding the soil's engineering properties, such as permeability, compaction characteristics, and shear strength.

3. Abscissa and ordinate:
The abscissa (x-axis) represents the size of soil particles, usually measured in millimeters. The ordinate (y-axis) represents the percentage of soil particles finer than a given size, expressed as a percentage by weight.

4. Percent finer by weight on the ordinate (arithmetic scale):
The percentage of soil particles finer than a particular size is plotted on the ordinate. The arithmetic scale is used on the ordinate to represent the percentage values accurately. The scale can range from 0% to 100%, representing the entire range of particle sizes in the soil sample.

5. Size of soil particle in mm on the abscissa (logarithmic scale):
The size of soil particles is plotted on the abscissa using a logarithmic scale. The logarithmic scale is used because the range of particle sizes in soils can vary significantly, from fine clay particles (less than 0.001 mm) to coarse gravel particles (greater than 20 mm). The logarithmic scale allows for better visualization and representation of the wide range of particle sizes.

6. Justification for option B:
Option B is the correct answer because it accurately describes the common practice of plotting grain size distribution curves. It aligns with the standard conventions used in geotechnical engineering to represent the percentage of soil particles finer than a given size on the ordinate (arithmetic scale) and the size of soil particles on the abscissa (logarithmic scale).

7. Conclusion:
Grain size distribution curves are important tools in geotechnical engineering, providing valuable information about the particle size composition of soils. The curves are typically plotted with the percentage of soil particles finer than a given size on the ordinate (arithmetic scale) and the size of soil particles on the abscissa (logarithmic scale), as described in option B.
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Grain size distribution curves are usually plotted between,a)percent finer by weight on abscissa (arithmetic scale) and effective diameter on ordinate (logarithmic scale)b)percent finer by weight on ordinate (arithmetic scale) and size of soil particle in mm on abscissa (logarithmic scale)c)percent finer by weight on abscissa (arithmetic scale) and effective diameter on ordinate (arithmetic scale)d)percent weight on ordinate (arithmetic scale) and size of soil particle in mm on abscissa (logarithmic scale)Correct answer is option 'B'. Can you explain this answer?
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