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Water Content (Gravimetric.)

Last modified by
on
Jan 27, 2022, 2:03:42 PM
Created by
on
Apr 30, 2014, 8:52:43 PM
θg=WWWSθg=WWWS
(WW)Water Content(WW)Water Content
(WS)Solid Content(WS)Solid Content
Tags
Soil and Earthwork Hydrology porosity
UUID
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The Gravimetric Water Content calculator computes the percentage of water verses solids.

INSTRUCTIONS: Choose units and enter the following:

  • (WW) Mass of Water Content
  • (WS) Mass of Solids Content

Gravimetric Water Content (θg): The calculator returns the percentage of water.

The Math / Science

The gravimetric water content θg is the mass of the water contained in a sample volume divided by the mass of the solid (dry mass equivalent) in that same volume.  The formula for gravimetric water content used in this calculator is:

θg = WW / WS

where:

  • θg = Gravimetric water content percentage
  • WW = Mass of Water
  • WS = Mass of Solids

In engineering application the porosity is used to indicate a tendency of a material to expand or contract.  A high porosity percentage is likely to be seen in loose soils which then will contract under pressure or added loads.  A low porosity percentage represents a material that is dense.  This porosity percentage affects how fluids will flow through a medium or how particulates can move through the medium.
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