Determine the width B of square foundation within sandy clay
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Determine the width B of square foundation within sandy clay
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- A rectangular foundation has dimensions B = 8’, L = 10’, D = 3’. It is underlain by a medium dense sand with Es =300ksf, γ =120 pcf . The water table is very deep. The bearing pressure Δp is 2 tsf. Determine the settlement three years after construction using Schmertmann’s MethodFor the rectangular footing (3 m x 4 m); if e = 0.5 m and q max = 200 KN/m?. Determine whether the design is good or not?A machine foundation has a base dimension of 4m x 8m and has weight of equal to 4.6 times weight of the engine. Find the maximum weight of the engine to be mounted if the safe bearing pressure of soil is 211 kpa
- A strip foundation with dimensions B has to be constructed on sandy soil. The foundation will be located at 1 m below the ground surface. The unit weight and the static angle of friction of the soil are 18 kN/m3 and 39o , respectively. The foundation may occasionally be subjected to a maximum dynamic load of 1800 kN increasing at a moderate rate. (i) Determine the size of the foundation using a safety factor of 3 by assuming the kh and kv values are 0.176 and 0, respectively. (ii) Determine the seismic settlement of the foundation if the design earthquake parameters are V = 0.4 m/sec and A = 0.32.A square footing 2.8 m X 2.8 m is built on a homogeneous bed of sand of density 18 kN/m3 and ϕ = 36o. If the depth of foundation is 1.8 m, determine the safe load that can be applied on the footing.A strip footing foundation 1 m wide is constructed in the slope of a hill whose surface inclination is 20°. The soil in the hill is a dense sand, with a unit weight of 19 kN/m3 and an angle of internal friction of 40°. Assume that the D/B ratio is about 1. Applying a factor of safety of 3, determine the wall loading the foundation can carry, per meter of footing length.
- It is proposed to build an 8-story building with a footprint of 20 m x 30 m, resting on a mat foundation of the same dimensions, in a saturated clay with undrained shear strength of 60 kPa. Assume approximately 12.5 kPa per floor for dead and live loads. Unit weight of soil is 18kN/m3 . a) At what depth would you place the mat to make this a fully compensated foundation?b) What would be the depth of this mat foundation for the net factor of safety of 5?c) What is the gross factor of safety for the depth determined in the answer to question b)?Write a note on Permissible Slope & Foundation on Sloping Ground?A square footing 2.8 m X 2.8 m is constructed on a uniform bed of sand with a density of 18 kN/m3 and a slope of = 36o. Determine the safe load that may be applied to the footing if the foundation depth is 1.8 m.
- Proportion a rectangular combined footing for two columns 5 m apart. The exterior column of size 0.3 m x 0.3 m carries a load of 600 kN and interior column of size 0.4 m x 0.4 m carries a load of 900 kN. The allowable soil pressure is 100 kN/m2For the following foundation determine Qu(adm) being Fs=1.5.2 metre wide continuous Foundation carries a will load of 350 kilo Newton per metre square in a clayey soil where y equal to 19 per metre cube c equal to 5 kilo Newton per metre square and theta equal to 23 degree the foundation depth is 1.5 metre determine the factor of safety of this Foundation