Ground Investigation in Civil Engineering Quiz

What is the primary purpose of using trial pits in ground investigation?

• To install underground utilities

• To visually examine in-situ soil conditions

• To create drainage systems

• To plant trees

What is the primary function of continuous-flight augers?

• To raise soil to the surface without withdrawal

• To measure soil moisture content

• To compact soil layers

In wash boring, what is used to loosen and break up the soil?

• Manual digging

• Explosives

• Water jets and cyclic vertical movement of the chisel

• Chemical solutions

What is a disadvantage of wash boring in terms of soil sample collection?

• It is too fast for accurate sampling

• It is unacceptable for obtaining soil samples

• It mixes soil layers too thoroughly

• It is too expensive

What is the primary purpose of using drilling fluid in rotary drilling?

• To increase the speed of drilling

• To cool and lubricate the drilling tool

• To harden the soil

• To reduce noise during drilling

What is the response time in the context of measuring water table levels?

• The time it takes for soil to dry

• The time it takes for water levels to stabilize

• The time it takes for a plant to grow

• The time it takes for a rock to erode

What is a piezometer used for?

• Establishing soil profile

• Determining ground water level

• Drilling a borehole

• Collecting soil samples

What is the simplest type of piezometer?

• Digital piezometer

• Open standpipe piezometer

• Closed circuit piezometer

• Wireless piezometer

What are the two main categories of soil samples mentioned?

• Wet and dry

• Hard and soft

• Undisturbed and disturbed

• Gravel and cobble

• Sand and Silt

What is the primary reason for covering soil samples with molten wax after they are brought to the surface?

• To prevent contamination from external elements.

• To maintain the sample's temperature.

• To avoid any change in water content.

• To enhance the sample's structural integrity.