soil collection
What is used to collect undisturbed soil samples?
Shelby-tube
What is shear strength of soil?
It is the maximum resistance offered by soil against shearing forces.
What is dry density of soil?
It is the mass of soil solids per unit volume of soil excluding moisture content.
Who proposed the most commonly used bearing capacity theory?
Terzaghi
Which soil property is tested using the Proctor test?
Compaction
What are the components of shear strength?
Cohesion and internal friction.
Which test is used to determine dry density in the field?
Core cutter test or sand replacement test.
Which soil type has the highest bearing capacity?
Rock
What tool is commonly used for shallow soil sampling?
Auger
Which test is commonly used to determine shear strength in the lab?
Direct shear test.
What is the unit of dry density?
kN/m³ or g/cm³
Which test is used to determine bearing capacity in the field?
Plate-load
Which test measures soil strength in the field?
SPT (Standard Penetration Test)
Name the parameter that represents soil friction in shear strength.
Angle of internal friction (ϕ).
How is dry density calculated?
Dry density=Bulk density/1+w
where w = water content
What reduces the bearing capacity of soil?
Water-table
What should be maintained in clay samples during storage?
Moisture
Which type of soil has high cohesion?
Clay
Why is dry density important in construction?
It indicates the compaction level and strength of the soil.
What is the unit of bearing capacity?
kN/m²