Soil Mechanics Question

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Homework Statement



A horizontal layer of soil in a tube 100 x 100 mm in cross-section. water is supplied to maintain a constant head difference of 300 mm across the sample. the coefficient of permeability of the soils in the direction of flow through them are as follows:
Soil A = 10^-2
Soil B = 3 x 10^-3
Soil C = 4.9 x 10^-4
Each of the soil samples width = 150 mm
Find the rate of supply in cm3/hr

Homework Equations



Kv(eq) = H / (H/K)a + (H/K)b + (H/K)c
q = k A dH/L


The Attempt at a Solution



Sub. with equation 1: K = 1.2 x 10^-3 cm/s
Sub. directly in equation 2 gives a wrong solution, what should I do?
 

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