Example 1: Determine the following:

(a) Equivalent coefficient of vertical permeability of the three layers
(b) The rate of flow per m² of plan area
(c) The total head loss in the three layers

Solution:
(a) = = 1.33 x 10^-3 cm/s

(b) Considering an area A = 1 m² =1 x 10⁴ cm²

q = k.i.A = = 7 x 10^-4 x 0.25/2 x (1x10⁴) = 0.875 cm³/s per m² of plan area

(c) For continuity of flow, velocity is the same.

  , where = total head loss in three layers

. = =   = 1.184 m