Geotechnical eng'g Flashcards
Weight-Volume Relationship
Porosity (n)
n = V of voids / Total Volume
Weight-Volume Relationship
Volume = ?
V = V of soil + V of void
Weight-Volume Relationship Void Ratio ( e )
e = V of Voids / V of Solids
Weight-Volume Relationship
Void Ratio in terms of Porosity
e = n/ 1-n
Weight-Volume Relationship
Degree of Saturation (s)
s = Volumeof Water / Volume of Void
Weight-Volume Relationship
Degree of Saturation is Dry soil, s= ?
S=0
Weight-Volume Relationship
Weight is equal to?
W = W of soil + W of void
Where : W of void = W of Soil + W of Water
Weight-Volume Relationship
Degree of saturation is over saturated , s=?
S>1
Weight-Volume Relationship Moistyre Content(w)
w= Weight of Water/ Weight of Soil
Weight-Volume Relationship
Porosity in terms of Void Ratio
n = e/ e+1
Weight-Volume Relationship
Degree of saturation is saturated, s=?
1
Se=wGs
(Degree of saturation)(Void Ratio) = (moisture content)(Specific Gravity)
Weight-Volume Relationship
Moist unit Weight (¥m)
¥m = [(Gs + Se) / (1 +e)] ¥h2o