Chapter 1.1, Problem 27ES

= Q6 What will be the allowable bearing capacity of sand having p = 37° and ydry 19 kN/m³ for (i) 1.5 m strip foundation (ii) 1.5 m x 1.5 m square footing and (iii)1.5m x 2m rectangular footing. The footings are placed at a depth of 1.5 m below ground level. Assume F, = 2.5. Use Terzaghi's equations. 0 Ne Na Ny 35 57.8 41.4 42.4 40 95.7 81.3 100.4

Q1 The SPT records versus depth are given in table below. Find qan for the raft 12% foundation with BxB-10x10m and depth of raft D-2m, the allowable settlement is 50mm. Elevation, m 0.5 2 2 6.5 9.5 13 18 25 No.of blows, N 11 15 29 32 30 44 0 estigate shear 12%

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