Roxul Industrial Insulation Process - Manual (Page 141)

3.1 Units, conversion factors and tables
3.1.7 Compound units derived from SI-units
Name Quantity Symbol Definition (Units)
Volume Litre l, L 1 l = 1 dm3 = 1L
Time
Minute
Hour
Day
Year
min
h
d
yr
1 min = 60 s
1 h = 60 min = 3600 s
1 d = 24 h = 1440 min
1 yr = 365 d = 8760 h
Mass
Tonnes
Grams
t
g
1 t = 1.000 kg
1 g = 0.001 kg
Pressure Bar bar 1 bar = 10 5 Pa = 10 5 N/m 2
US Customary Units
Volume (liquid)
Pint
Quart
Gallon
Barrel
(oil barrel)
pt
qt
gal
bbl
bbl
1 pint = 2 cups
1 quart = 2 pints
1 gallon = 4 quarts
1 barrel = 31.5 gallons
1 oil barrel = 42 gallons
Volume
cubic inch
cubic foot
cubic yard
in 3
ft 3
yd 3
1ft 3 = 1728 in 3
1 yd 3 = 27 ft 3
Volume 1 board foot 1 ft x 1 ft x 1in
Length
inch
foot
yard
mile
in
ft
yd
mi
1in = 12pica
1ft = 12in
1yd = 3ft
1760 yd = 1mi
Time
Minute
Hour
Day
Year
min
h
d
yr
1 min = 60 s
1 h = 60 min = 3600 s
1 d = 24 h = 1440 min
1 year = 365 d = 8760 h
Mass
Ton
Pound
Ounce
Grain
t
lb
oz
gr
1 long ton = 2240 lb
1 short ton = 2000 lb
1 US hundred weight = 100 lb
1 lb = 16 oz
1 lb = 7000 grain
Pressure
Pound-Force per square foot PSF
Pound-Force per square inch PSI 1PSI = 144 PSF
Atmosphere atm 1atm = 14.70 PSI
138