A clay lense of Kc=0.10cm/day is sandwiched somewhere inside a vertical soil column of height 100cm that is otherwise filled withsand of Ks=200cm/day. A depth of water d=10cm is ponded above the surface.
a. If the actual flux rate is Jw = -15cm/day, how thick is the claylense?
b. Calculate the pressure at the clay-sand interface for two cases:1) clay on top of the sand and 2) clay on the bottom of thevertical sand column.