LECTURE 2: mass movement

Question 1

what is the formula for factor of safety

Answer 1

fs=shear strength/shear stress

Question 2

what is the formula for strength of soil

Answer 2

strength of soil=(weight-pore water pressure)tan(friction)+cohesion

Question 3

examples of physical weathering

Answer 3

frost action, pressure release jointing and exfoliation, hydration, salt weathering

Question 4

what is pressure release jointing and exfoliation

Answer 4

expansion and resultant cracking parallel to the surface caused by heat

Question 5

examples of chemical weathering

Answer 5

hydrolysis, oxidation, chelation, dissolution

Question 6

what is dissolution

Answer 6

when liquids dissolve into solids

Question 7

what are the products of weathering

Answer 7

resistates, secondary minerals, mineral rich solutions