fieldwork methods week2

Question 1

what are the fieldwork methods

Answer 1

intrusive methods

non-intrusive methods

Question 2

what is meant by intrusive method

Answer 2

excavating or removing soil/rock

Question 3

what are some examples of intrusive methods of fieldwork

Answer 3

trial pit (digging a hole in the ground t test soil)
bore hole (for deep ground)

Question 4

what is the limitation of using the intrusive methods

Answer 4

you only get information on the exact location where the text was taken

Question 5

what are examples in-situ testing

Answer 5

dynamic probes
shear vane- measure the shear strength of the soil
permeability test- how much water passes through
performance test- directly measures bearing ability

Question 6

what are some examples of dynamic probes?

Answer 6

mackintosh probe (5kg)
standard penetration test (SPT) (64kg)
‘dutch’ cone penetration test (CPT)

Question 7

what are examples of performance test

Answer 7

plate bearing test

California bearing ratio test

Question 8

what are the different types of sampling and define them

Answer 8

disturded sample- sample will no longer be in the same conditions as it was in the ground
undisturbed sample- driving a ‘u100’ tube into the ground
window sample- tube driven into the ground and has windows so that the soil can be accessed