Building Construction
Auger boring

Is the most primitive method for making a hole in the ground
Is most economical up-to a depth of 5 meters
All of these
Is generally employed in cohesive and other self soils above water table

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Building Construction
Pick up the correct statement about silt soil from the following:

The least plastic type normally consists of more or less equidimensional grains of quartz
All listed here
In organic fine grained silt soil possesses no plasticity
The silt soil has particle size from 0.02 mm to 0.06 mm

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