In the spring analogy of consolidation, cylinder is filled with water up to the bottom of the piston and carries P = X units of load (initial equilibrium condition when valve is opened) as shown in Figure (a) below. Write the effective pressure; o', and excess pore water pressure; Au, considering the spring as soil particles and the water in the cylinder as porewater: a. At the initial equilibrium condition (Figure a) b. If external AP = 3 units of load is applied and the valve is opened (Figure b) c. If external AP 3 units of load is applied and the valve is partly opened (Figure e) d. If external AP-3 units of load is applied and the valve is closed (Figure d) www.x piston water valve Initial equilibrium condition-valve is opened www water, valve. (b) External loadi and valve is open water valve valve water (d) External load. External load and valve is half-open and valve is closed