1.A circular ring footing for an overhead water tank carries a load of 1,000 kN whose outer diameter

1.A circular ring footing for an overhead water tank carries a load of 1,000 kN whose outer diameter is 3 m and inner diameter is 1.5 m. Assume the surface pressure to be uniform over the area. Determine the vertical stress at depths of 2 m and at radial distances of 2 and 4 m from the center. Use Newmark’s chart with an influence value of 0.005. 2. A square footing of 3 m×3 m carries a uniformly distributed load of 200 kN/m2. Find the vertical stress at 3 m below the footing and under a point (i) 1.2 m away from the corner and in line with the side, (ii) 1.2 m inside the corner and in line with the side.

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