Civil Engineering MCQAE Level Civil Engineering
The relative density D_r of a sand deposit is defined as:
Soil MechanicsRelative DensityMEDIUM
Choose the correct answer
A
(e_max - e) / (e_max - e_min)
B
(e - e_min) / (e_max - e_min)
C
(γ_d - γ_d,min) / (γ_d,max - γ_d,min)
D
Both A and C (both give same result)
Correct Answer
D. Both A and C (both give same result)
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Relative density D_r = (e_max - e)/(e_max - e_min) in terms of void ratio, which is equivalent to (γ_d - γ_d,min)(γ_d,max)/[(γ_d,max - γ_d,min)×γ_d] in terms of dry unit weight. Both expressions give the same D_r value.
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