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# 1.Three load-bearing walls meet at a point X, as shown in Fig. 7.41. Compute the vertical stress at.

1.Three load-bearing walls meet at a point X, as shown in Fig. 7.41. Compute the vertical

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1.Three load-bearing walls meet at a point X, as shown in Fig. 7.41. Compute the vertical stress at.

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stress at a point 3 m under X. The loads transferred by the walls may be approximated as line loads. (Hint: Take half of the stress caused by an infinite line load.)

2. A uniformly distributed load of infinite extent in both lateral directions, when applied

at the surface of a natural soil formation, produces an increase of 75 kN/m 2 in the vertical stress at a depth of 3 m. Find the stress increment at a depth of 5 m. 3. Show that the vertical stress, *σ**’z*, at depth *z*, for a long strip area with a triangular distributed load (Fig. 7.42) is