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Questions and Answers
Which type of investigation involves detailed investigation of the soil surface on which the pavement is constructed?
Which type of investigation involves detailed investigation of the soil surface on which the pavement is constructed?
- Subsurface Investigation
- Subgrade Investigation (correct)
- Pavement Investigation
- Soil Investigation
What should be considered when making deep cuts, large embankments across marshland, or if weak layers are present in the subsurface?
What should be considered when making deep cuts, large embankments across marshland, or if weak layers are present in the subsurface?
- The existing topography and the nature of subsoil (correct)
- The color and visual description of each layer
- The water levels below the surface
- The type and depth of each layer
What should be done to classify the soil in the subgrade?
What should be done to classify the soil in the subgrade?
- Take small samples at each auger hole and conduct 'in the field' soils classification (correct)
- Take small samples in the test pit and conduct 'in the field' soils classification
- Conduct an in-situ density test
- Take large samples at each auger hole and conduct 'in the field' soils classification
What should be done to investigate the subgrade on existing roads?
What should be done to investigate the subgrade on existing roads?
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Which standards should be followed for in-situ density testing?
Which standards should be followed for in-situ density testing?
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