Chapter 11, Problem 11.7P

A circular footing 3 m in diameter applies a uniform surface pressure of 150 kPa. Determine the vertical stress increase beneath the center at 2 m deep from the ground level.

Plz give the correct answer. Compute the intensities of active and passive earth pressure at depth of 8 m in dry cohesionless sand with an angle of internal friction of 30 degrees , and unit weight of 18kN / (m ^ 3) What will be the intensities of active and passive pressure if the water level rises to the level? Take the saturated unit weight of sand as 22kN / (m ^ 3) .

A 450 kN force is transmitted by a column footing onto the surface through a square footing 1.5 m on a side. Assuming that the force exerted on the underlying soil formation spreads on 2 vertical to 1 horizontal, evaluate the pressure, in kPa exerted in footing on a soil 2.7 m below it.

It is required to design a cantilever retaining wall to retain a 5.0 m high sandy backfill. The dimensions of the cantilever wall are shown in Figure 15.52 along with the soil properties. Check the stability with respect to sliding and overturning, based on the active earth pressures determined, usinga. Coulomb's earth pressure theory (δ' = 24°), andb. Rankine's earth pressure theory.The unit weight of concrete is 24 .0 kN/m3

In Problem 16.3, if there was a surcharge of 20 kN/m2 at the ground level, what would be the total horizontal normal stresses at A and B? Use the results from Problem 16.3. 16.3 The soil profile at a site is shown Figure P16.3. Find the total horizontal normal stresses at A and B, assuming at-rest conditions.

A 10 m x 6 m mat foundation is placed at 2.0 m depth in sand where the average value of N60 is 23. Determine the allowable net pressure that would limit the settlement to 75 mm, using the following equations.

For a given consolidated clay: Gs= 2.71; LL= 45; In situ average effective overburden pressure = 120 kPa; In situ void ratio= 0.80 ; Thickness of clay layer = 4m ; average increase of effective stress on clay layer= 40 kPa; Effective pressure at the mid-height of clay layer= 60 kPa; Swell Index (Cs)= 1/5 Cc. Compute the compression index. a.0.534 b.0.513 c.0.315 d.0.145   With Free Body Diagram

What are the Conditions for submerged soil: Lateral pressure is the total of soil plus water pressure?

Compare the effect of surface loading on retained soil side on the lateral pressure behind retaining wall by assuming a uniformly distributed load of 20 kPa on the top of the soil behind the retaining wall. The soil properties are: c' = 0. φ'= 30°, γ = 19 kN/m3 and the height of retaining wall on active side is 6m.​Your answer should be in table form showing lateral pressure with and without superimposed loading, and the percent increase/decrease in total pressure at different depths.