PROBLEM $01$: $[25$ POINTS; $5$ POINTS EACH$]$:

i$.$ For a consolidating clay layer, the rate at which the pore water pressure dissipates increases$/$decreases with time. $[$Select the appropriate answer$]$

ii$.$ Under hydrostatic conditions, the hydraulic gradient is equal to:

a$.0$

b$.-1$

c$.+1$

d$.$ None of the above

iii. It is always better to $q,$ the void ratio so we can avoid quick conditions, since in this case, the soils are more compacted

a$.$ Not change

b$.$ Increase

c$.$ Decrease

d$.$ None of the above, void ratio is not related to compaction

iv$.$ The virgin compression line determines the change in void ratio under varying effective vertical stress for normally consolidated clays:

a$.$ True

b$.$ False

v$.$ When a saturated clay layer is unloaded $($removal of a certain surcharge load from the top$)$ which sequence of events take place?

a$.$ Negative pore water pressures $$ suction forces $$ increase in volume

b$.$ Negative pore water pressures $$ increase in total stress $$ decrease in volume

c$.$ Positive pore water pressures $$ suction forces $$ increase in volume

d$.$ Positive pore water pressures $$ increase in total stress $$ decrease in volume