Geotechnical Engineering

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N-GEO\APPENDIX.PM5 903

APPENDICES 903

S.No.

Quantity

MKS Unit

SI

Unit

Abbreviation

Conversion factor

1.

Mass Density

kg(m) per cu

m

Megagram per

cu m

Mg/m

3

1 kg/m

3 = 1 × 10

–3

Mg/m

3

g (m) per cu cm

gm per milliliture

g/ml

1g/cm

3 = 1 g/ml

2.

Unit Weight

kg(f) or t(f) per cu m

kilonewoton per cu m

kN/m

3

1 t/m

3 = 9.8 kN/m

3

g(f) per cu

cm

1g/m

3 = 9.8 kN/m

3

3.

Force

kg (f)

newton

N

1 kg =

9.8 N

t (f)

1 t = 9.8 kN

4.

Pressure, Stress

kg (f) per sq cm

kilonewton

kN/m

2

1 kg/cm

2 = 98 kN/m

2

t (f) per sq m

per sq m

1 t/m

2 = 9.8 kN/m

2

5.

Velocity, coefficient of

cm per second

millimetre per second

m

m/s

1 cm/s = 1 × 10 mm/s

permeability

m

per second

metre per second

m/s

= 10 × 10

–2

m/s

m per year

metre per year

m/a

6.

Rate of flow

cu m per second

cubic metre per second

m

3 /s

1 cm

3 /s = 1 × 10

–6

m

3 /s

litre per second

litre per second

1/s

7.

Coefficient of com-

Square metre per kg f

Sq m per kilonewton

m

2 /kN

1 m

2 /kg = 102.041 m

2 /kN

pressibility

8.

Coefficient of consoli-

Square metre per second Sq m per second

m

2 /s

1 m

2 /s = 1 × 10

6 mm

2 /s

dation

Sq.

millimetre per second

mm

2 /s

9.

Moment of force

kilogram (force) metre

kilonewton metre

kN m

1 kg m = 9.8 × 10

–3

kNm

tonne (force) metre

newton millimetre

N mm

1 t m = 9.8 kN m1 kg m = 9.8 × 10

3 N mm

The SI Units specifically used in the field of Geotechincal Engineering are listed below, along with the MKS Units and theconversion factors: