(a) Explain the difference between the following: (i) a point load and a distributed load (ii) stress and strain (iii) total stress and effective stress in a soil (b) Calculate the support reactions generated at supports A and B for the beam shown in Figure 1. [10] 34 kN 12 kN 1m 2.5 m 15 m 3.5 m A 3.8 kN/m Figure 1 4 m (c) A vertical section through a dam wall is shown in Figure 2. If the depth of water in the reservoir is 15m calculate the fluid pressure at the bottom of the dam wall and the force exerted by the water on the wall, per metre width of the dam (take p = 1,000 kg/m). [4] P.T.O. Figure 2