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A 4 mx 8 m surface loading of 80 kPa is applied on top of soil at a site as shown in the figure below. Determine the vertical stress increase at the centre of the day stratum and directly below the centre of the surface loading 8m q=80 kPa 4m 8m Clay Impervious rock 0.24 0.20 0.18 0.16 11,00. 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0 Values of 1 O 645 kPa Ⓒ965KP Ⓒ 384kPa Ⓒ 24 APA 0.01 al Note: m & are interchangeable 0.1 Values of n = 1/2 1.0 10 too -0.5 30.3 03 02 m=0.1] 10

The Lishaped area shown in the Figure and it carries a 200 kPa uniform load on the ground surface. Find the vertical stress increase due to the loading at a depth of 2 m below A 2m 200 kP 200 k 2m 3m 0.24 0.22 0.30 0.15 0.16 0.14 0.12 0.10 DOS 0.06 0.04 0.00 © 21.10 C3.11524PC Ⓒ 780x72 0.01 A 200 kP Atwate Note: m & nare interchangeable 0.1 (mm) Values of L 1.0 01 10