SEMI FINALS

Question 1

Total Settlement of Foundation

Answer 1

Sᴛ = Sc + Ss + Se

Question 2

Normally Consolidated Clay in Primary Consolidated Settlement

Answer 2

Sc = (CcH / 1+eᴏ) log ((Po+ΔP)/Po)

Question 3

Increase in Vertical Pressure

Answer 3

ΔP = (Pᴛ + 4Pᴍ + Pʙ) / 6

Question 4

P formula for Vertical Pressure

Answer 4

P = Applied Load (P) / Area

Question 5

Over-Consolidated Clay when Po + ΔP < Pc

Answer 5

Sc = (CsH / (1+eo)) log ((Po+ΔP) / Po)

Question 6

Over-Consolidated Clay when Po + ΔP > Pc

Answer 6

Sc = (CsH)/(1+eo) log (Pc/Po) + (CcH)/(1+eo) log (Po+ΔP)/Pc

Question 7

Secondary Settlement

Answer 7

Ss = Ca’H log (t2/t1)

Question 8

Ca’ Formula

Answer 8

Ca’ = Ca / (1+ep)

Question 9

Secondary Compression Index

Answer 9

Ca = Δe / log(t2/t1)

Question 10

Void ratio at the end of primary settlement

Answer 10

ep = eo - Δe

Question 11

Change in void ratio

Answer 11

Δe = Cc log ((Po+ΔP)/Po)

Question 12

Compression Index

Answer 12

Cc = 0.009 (LL - 10)

Question 13

Liquid Limit Formulas

Answer 13

PI = LL-PL
LI = (ω-PL)/(LL-PL)

Question 14

Swell Index

Answer 14

Ranges from 1/5 to 1/10 of Cc

Question 15

Sᴛ

Answer 15

Total Settlement

Question 16

Sc

Answer 16

Primary Consolidation Settlement

Question 17

Ss

Answer 17

Secondary Consolidation Settlement

Question 18

Se

Answer 18

Immediate Settlement

Question 19

Cc

Answer 19

Compression Index

Question 20

eo

Answer 20

In situ void ratio

Question 21

Po

Answer 21

Average Effective Stress at the Middle of Clay Layer

Question 22

ΔP

Answer 22

Average Increase of Effective Stress on Clay Layer

Question 23

H

Answer 23

Thickness of Clay Layer

Question 24

Pᴛ

Answer 24

Pressure at top

Question 25

Pᴍ

Answer 25

Pressure at Middle

Question 26

Pʙ

Answer 26

Pressure at Bottom

Question 27

Cs

Answer 27

Swell Index

Question 28

Pc

Answer 28

Pre-Consolidation Pressure

Question 29

LL

Answer 29

Liquid Limit

Question 30

PI

Answer 30

Plastic Index

Question 31

PL

Answer 31

Plastic Limit

Question 32

LL

Answer 32

Liquidity Limit

Question 33

t1

Answer 33

Time for completion of Primary Settlement

Question 34

t2

Answer 34

Time after completion of Primary Settlement

Question 35

Ca

Answer 35

Secondary Compression Index

Question 36

ep

Answer 36

Void ratio at the end of primary settlement

Question 37

Δe

Answer 37

change in void ratio

Question 38

eo

Answer 38

In situ void ratio

Question 39

The total vertical displacement that occur at foundation level

Answer 39

Total Settlement

Question 40

is a process of dissipation of increased pore water pressure due to the application of loads on the soil layer and increases in the effective stress in the soil skeleton. This results in a volumetric change in the soil skeleton.

Answer 40

Primary Consolidation

Question 41

is the continued deformation of the soil structure after excess pore pressure has dissipated, such as the sliding of particles over each other or compression of particles.

Answer 41

Secondary Consolidation

Question 42

occurs straight away as soon as the load is applied to the soil and and involves reduction in void space and rearrangements of the soil particles in response to that load

Answer 42

Immediate Settlement

Question 43

Clay that is compacted by exactly the amount to be expected from the pressure exerted by the overburden; clay which has never been overloaded. currently experiencing the maximum vertical overburden effective pressure they have ever experienced in their history.

Answer 43

Normally Consolidated Clay

Question 44

Clay soil deposit that has been fully consolidated under a pressure

Answer 44

Over-consolidated clay

Question 45

it is measured as the slope of the curve between void ratio and effective stress.

Answer 45

Compression Index

Question 46

is evaluated based on laboratory measurements on high-quality, "undisturbed" samples of soil.

Answer 46

In situ void ratio

Question 47

the slope of the rebound curve of void ratio versus the logarithm of the effective pressure curve is used to estimate the consolidation settlement of over-consolidated fine grained soils.

Answer 47

Swell Index