Custom Search

Imperial and SI Fluid Mechanics Dimensions and Units

Imperial (USCS) and SI dimensions and units terminology

Sponsored Links

The table below list the most common units used in the

  • Imperial or USCS - United States Customary Units
  • International System of Units - SI system
Terminology Dimensions Imperial Units
(USCS)
SI-units
Acceleration due to gravity L/T2 ft/s2 m/s2
Area L2 ft2 m2
Chezy roughness coefficient L1/2/T ft1/2/s m1/2/s
Critical Depth L ft m
Density FT2/L4 lb s2/ft4 kg s2/m4
Depth L ft m
Depth in open channel L ft m
Diameter L ft m
Distance from solid boundary L ft m
Flow rate L3/T ft3/s m3/s
Force F lb N
Force due to pressure F lb N
Hazen Williams roughness coefficient L0.37/T ft0.37/s m0.37/s
Head loss due to friction L ft m
Head of height L ft m
Head of weir L ft m
Height above datum L ft m
Hydraulic radius L ft m
Kinematic viscosity L2/T ft2/s m2/s
Length L ft m
Manning's roughness coefficient T/L1/3 s/ft1/3 s/m1/3
Mass FT2/L lb s2/ft N s2/m
Modulus of elasticity F/L2 lb/in2 (psi) Pa
Perimeter, Weir Height L ft m
Pressure F/L2 lb/ft2 Pa
Radius L ft m
Shear stress F/L2 lb/ft2 Pa
Size of roughness L ft m
Specific weight F/L3 lb/ft3 kg/m3
Surface tension F/L lb/ft kg/m
Time T s s
Thickness L ft m
Time T s s
Total head L ft m
Unit flow rate L3/TL ft3/(s ft) m3/(s ft)
Velocity L/T ft/s m/s
Viscosity FT/L2 lb s/ft Pa s
Weight F lb kg
  • L - length
  • F - force
  • T - time

Sponsored Links

Related Topics

  • Fluid Mechanics - The study of fluids - liquids and gases. Involves various properties of the fluid, such as velocity, pressure, density and temperature, as functions of space and time.

Sponsored Links

Related Documents

Engineering News

Engineering Standards