The units used throughout the text are conventional metric units with a few additional. A British units.
For the convenience of the reader a table listing a few conversion factors for metric and British units used in the text are presented in the following table.
Table 25 Conversion factors for British/SI units
| Quantity | British units |
SI units |
Conversion factors |
||
| Length | foot and inch |
meter (m) | 1 foot = 0.3048 m. | 1m = 3.28 foot | |
| decimeter (dm) | 1 foot = 3.048 dm. | 1 dm = 0.33 foot | |||
| centimeter (cm) | 1 inch = 2.54 cm | 1 cm = 0.39 inch | |||
| millimeter (mm) | 1 inch = 25.4 mm | 1 mm = 0.039 inch | |||
| Area | square, yard, foot, inch |
square meter (m²) | 1 yd ²= 0.836 m² | 1 m² = 1.196 yd² | |
| square decimeter (dm²) | 1 ft² = 0.093 m² | 1 m² = 10.76 ft² | |||
| square centimeter (cm²) | 1 inch² = 645.16 mm² | 1 mm² = 0.0016 inch² | |||
| Volume | Cubic foot, inch |
cubic meter (m³) | 1 ft³ = 0.028 m³ | 1 m³ = 35.31 ft³ | |
| cubic decimeter (dm³) | 1 m³ = 645.16 mm³ | 1 mm³ = 0.0016 m³ | |||
| Mass | ton, pound |
metric ton (t) | 1 ton = 1.016 t | 1 t = 0.98 ton | |
| kilogram (kg) | 1 lb = 0.454 kg | 1 kg = 2.20 lb | |||
| gram (g) | 1 lb = 454 g | 1 g = 0.002 lb | |||
| Volume, liquid | gallon |
liter (l) | 1 gal = 4.546 l | 1 l = 0.22 gal | |
Selected International System Units
| Power: | 1 kilowatt (kW) = 1.341 hp |
| Specific energy: | 1 kilojoule per kilogramme (kJ/kg) = 0.239 kcal/kg |
| Heat flow rate: | 1 watt (W) = 0.86 kcal/h 1 watt (W) = 3.412 Btu/h |
| Specific heat capacity, mass basis: | 1 joule per gramme degree Celsius (J/g deg C) = 0.239 kcal/kg deg C |
| Thermal conductivity: | 1 watt metre per square metre degree
Celsius (W m /m² deg C) = 0.86 kcal m/ m² h deg C 1 watt per metre degree Celsius (W/m deg C) = 0.86 kcal/m h deg C |
| Thermal conductance: | 1 watt per square metre degree Celsius (W/m² deg C) = 0.86 kcal/m² h deg C |
