Definition of key parameters

Following density-related parameters are used in this manual  

In British and American literature, the definition specific gravity is often used. The specific gravity is the ratio of density of solids over the density of water. 

S degree of saturation (ratio of volume of water to the volume of voids in a soil sample) 

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Oppenheim, I., Shinar, D., Enjalbert, S., Dahyot, R., Pichon, M., Ouedraogo, A., Liitzhoft, M., Carsten, O., Hjahndahl, M., and Cacciabue, C. 2010b. Description of unified model of driver behaviour (UMD) and definition of key parameters for specific application to different surface transport domains of apphcatioa In D. Shinar (Ed.), ITERATE deliverable 1.2. 

Definition of key parameters 8.3.2 Density ratios R3.3 The use of densities or density ratios in specifications ... 

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