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APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Sixth semester B.Tech degree examinations (S), September 2020

Course Code: CE364
Course Name: ADVANCED FOUNDATION ENGINEERING
Max. Marks: 100 Duration: 3 Hours
PARTA
Answer any two full questions, each carries 15 marks. Marks
1 a) Briefly describe the general requirements of foundations. (5)

b) A rectangular footing of dimensions 2.5 m X 3 ‏دص‎ in plan is founded at a depth of 1.5 22 (10)
below the ground level. The load on the footing acts at an angle of 15° to the vertical and
is eccentric in the direction of the width by 10 cm. The saturated unit weight of soil is 18
ന്‌. ೮15 10/0722, ©’=30°. Water table is at a depth of 2m below the ground surface.

Use IS 6403-1981 recommendations to calculate the net ultimate bearing capacity. For
0-30", Nc=30.14, Nq= 18.4, Ny=22.4

2 a) Briefly describe the effect of size on the settlement of footings on homogeneous sand (5)
deposits.

b) A square footing of size 6m X 6 m is founded at a depth 2m below ground surface in (10)
loose sand with a net loading intensity of 100 कषाः. The water table is at the base of the
foundation. Above the water table, y= 16 10ന്‌ and submerged unit weight = 9 kN/m*.
Compute the elastic settlement using Steinbrenner’s curve. Take p= 0.3, depth of
compressible layer is 12 m and Es=7000 kN/m?

Values of 7 ——) and 0...)
9. 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Depth factor d, = H/B

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