Jumat, 18 Februari 2011

Konversi satuan Teknik sipil

                              CONVERSION FACTORS (Approximate)

 Quantity   Imperial Unit Metric Unit Imperial to  Metric to 
Metric Units Imperial Units
  Length inch (in) millimetre (mm) or 1 in = 25.4 mm 1 cm = 0.394 in
    centimetre (cm)    
  foot (ft) centimetre or metre (m) 1 ft = 30.5 cm 1 m = 3.28 ft

  yard (yd) metre (m) 1yd = 0.194 m  1 m = 1.09 yd

  furlong (fur) metre (m) or 1 fur = 201 m 1 km = 4.97 fur

    kilometre (km)    

  mile kilometre (km) 1 mile = 1.61 km 1 km = 0.621 mile

  international nautical mile   1 n mile = 1852 m 1m = 3.28 ft

  (for navigation)      

  Mass ounce (oz) gram (g) 1 oz = 28.3 g 1 g = 0.0353 oz

  pound (lb) gram (g) or kilogram (kg) 1 lb = 454 g 1 kg = 2.20 lb

  stone kilogram (kg) 1 stone = 6.35 kg 1 kg = 0.157 stone

  ton tonne (t) 1 ton = 1.02 t 1 t = 0.984 ton

 Area square inch (in²) square centimetre (cm²) 1 in² = 6.45 cm² 1 cm² = 0.155 in²

  square foot (ft²) square centimetre (cm²) or 1 ft² = 929 cm²  

    square metre (m²)   1 m² = 10.8 ft²

  square yard (yd²) square metre (m²) 1 yd² = 0.836 m² 1 m² = 1.20 yd²

  perch (p) square metre (m²) 1 p = 25.3 m² 1 m² = 0.0395 p

  rood (rd) hectare (ha) 1 rd = 0.101 ha 1 ha = 9.88 rd

  acre (ac) hectare (ha) 1 ac = 0.405 ha 1 ha = 2.47 ac

  square mile  square kilometre (km²) 1 square mile=2.59 km² 1 km²=0.386 sq.mile 

 Volume cubic inch (in³) cubic centimetre (cm³) 1 in³ = 16.4 cm³ 1 cm³ = 0.0610 in³

  cubic foot (ft³) cubic metre (m³) 1 ft³ = 0.0283 m³ 1 m³ = 35.3 ft³

  cubic yard (yd³) cubic metre (m³) 1 yd³ = 0.765 m³ 1 m³ = 1.31 yd³

  bushel (bus) cubic metre (m³) 1 bus = 0040.0364 m³ 1 m³ = 27.5 bus

 Volume fluid ounce (fl oz) millilitre 1 fl oz = 28.4 ml 1 ml = 0.0352 fl oz

 (fluids) pint (pt) millilitre (ml) or litre (l) 1 pt = 568 ml 1 litre = 1.76 pt

  gallon (gal) litre (l) or cubic (m³) 1 gal = 4.55 litre 1 m³ = 220 gal

  acre foot cubic metre (m³) or 1 acre foot = 1230 m³  

    megalitre (ML)                  1.23 ML 1 ML= 0.811 acre foot

 Force pound - force (lbf) newton (N) 1 lbf = 4.45 N 1 N = 0.225 lbf

  ton - force (tonf) kilonewton (kN) tonf = 9.96 kN 1 kN = 0.100 tonf

 Pressure pound per square inch(psi) kilopascal (kPa) 1 psi = 6.89 kPa 1 kPa = 0.145 psi

  atmosphere (atm) kilopascal (kPa) or 1 atm = 101 kPa  

    megapascal (MPa)   1 MPa = 9.87 atm

  ton per square inch (ton/in²) megapascal (MPa) 1 ton/in² = 15.4 MPa 1 MPa = 0.647 ton/in²

  inch of mercury (in Hg) milibar (mb)    

  (for meteorology)   1 in Hg = 33.9 mb 1 mb = 0.0295 in Hg

      1 mb = 100 Pa  

 Velocity mile per hour (mph) kilometre per hour (km/h) 1 mph = 1.61 km/h 1 km/h = 0.621 mph

  knot (kn)         = 1 kn = 1.85 km/h  

  (for navigation)      

Temperature degree Fahrenheit (°F) degree Celsius (°C) °C = 5/9 (F - 32) °F = 9/5 (C + 32)

 Density pound per cubic inch (lb/in³) gram per cubic centimetre (g/cm³) 1 lb/in³ = 27.7 g/cm³ 1 g/cm³=0.0361 ib/in³


    = tonne per cubic metre (t/m³) 1lb/in³ = 27.7 t/m³          1 t/m³ = 0.0361ib/in³


  ton per cubic yard tonne per cubic metre (t/m³) 1 ton/yd³ = 1.33 t/m³ 1 t/m³= 0.752 ton/yd³


Energy British thermal unit (btu) kilojoule (kJ) 1 Btu = 1.06 kJ 1 kJ = 0.948 Btu

  therm megajoule (MJ) 1 therm = 106 MJ 1 MJ= 9.48x 10³ therm

  (for electrical energy) kilowatt hour (kWh) =kWh = 3.60 MJ  

Power horsepower (hp) kilowatt (kW) 1 hp = 0.746 kW 1 kW = 1.34 hp

Time   second (s)    

    minute (min) 1 min = 60s  

    hour (h) 1 h = 3600s  

Frequency cycle per second (c/s) hertz (Hz) 1 c/s = 1.Hz 1 Hz = 1.c/s

Angular  revolution per minute  radian per second (rad/s) 1 rpm = 0.105 rad/s 1 rad/s = 9.55 rpm.

     

Velocity (rpm) revolution per minute

    (rpm)

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