Page 304 - Mechanical Engineer's Data Handbook

292 MECHANICAL ENGINEER'S DATA HANDBOOK

1 yard=914 mm =0.914 m. 1 mile h-'=0.447 m s-' = 1.61 km h-'.
1 mile = 1609 m = 1.609 km. 1 km h-' =0.719ms-'.
1 nautical mile = 1.835 km = 1.14 miles. 1 knot = 1 nautical mile/hour =0.515 m s- '
1 pm = m.
1 A= 10-'Om. MassJlow rate

Area 1 Ibm s- ' = 0.454 kg s- '.
lIbmh-'=1.26x 10-4kgs-'.
1in.'=645mm2=0.645 x 10-3m2 1 tonh-'=0.282kgs-'.
1ft2=9.29x 104mm2=0.0929m2. 1 slugs-'= 14.6kg~-'.
1 yard2=0.836m2.
1 acre = 4047 m2. Volume $ow rate
1 mile2 = 2.59 x lo4 m2 = 2.59 km2.
1 hectare= 10000m2 1 ft3 s- ' = 0.283 m3 s- '.
1 UK gallonsec-'=0.00455m3s-'.
Volume (capacity) 1 US galIons-'=0.00379m3s-'.
1 UK gallonmin-'=7.58~ 10-5m3s-1.
1 in.3 = 16.4 x 103mm3 = 16.4 x m3. 1 US gallon min-'=6.31x 10-5m3s-1.
1 ft3 =0.0283 m3.
1 yard3 = 0.765 m3. Force
1 pint (UK)=0.568.1.
1 pint (US)=O.4561. 1 Ibf = 4.45 N.
1 quart (UK)= 1.1371. 1 kip (1000Ibf)=4.45 kN.
1 quart (US) = 0.9464 1. 1 tonf= 9964 N.
1 gallon (UK)= 1.201 gallon (US)=4.546 1. 1 poundal=O.l38N.
1 gallon (US) = 3.785 1. 1 d~ne=lO-~N.
1 barrel =42 gallons (US) = 159 1.
1cm3=1000mm3. Stress or pressure
1 I. = 1000cm3.
lm2=10001. 1 Ibfin.' (psi)=6895Nm-2 (Pa).
1 IbfftW2 (p~f)=47.9Nm-~.
Mass 1 kipin.-2 (ksi)=6895 kNm-2 (kPa).
1 kipft-2. (ksf)=47.9 kNm-2 (kPa).
1 Ibm = 0.454 kg. 1 po~ndalft-~=l.49Nm-~.
1 slug=32.17Ibm= 14.6 kg. 1 t~nfin.-~= 15.44 x 106Nm-2.
1 ton (US or 'short')=2000Ibm=907.2kg. It0nfft-~=1.073~ io5Nm-'.
1 ton (UK or 'long')=2240Ibm= 1016kg. lin. water (39.2"F)=249Nm-2.
1 tonne (metric ton) = lo00 kg 1 ft water (39.2"F)=2989Nm-'.
1 in. merc~ry=3386Nm-~.
Density latmos=14.7psi=1.01325 x lO5Nrn-'
1 MPa = lo6 N m- = 1 N mm- '.
1 Ib in.-3 =27 680 kgm-3 1 bar = 10' N m - 2.
11bft-3=16.02kgm-3.
1 slug ft-' = 515.4 kg m- Work and energy

Velocity 1 in.Ibf=0.113 J (Nm).
1 ft.lbf= 1.365 J.
1 in. s- ' = 0.0254 m s- ' . 1 Btu = 778 ft Ibf = 252 calories = 1055 J.
1 fts-'=0.3048ms-'. lcal=4.1865.
1 ft min- ' =O.O0508 m s- ' 1 kcal = 4.186 kJ.