A long slope is formed in a soil with shear strength
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- An infinite slope of granular soil has a slope of 29 degrees. The soil has a dry unit weight of 18.02kN/m^3 and a saturated unit weight of 21.15kN/m^3. The soil has a depth of 5 meters over ledge rock measure vertically. Effective friction angle and soil cohesion are 14 degrees and 25 kPa, respectively. a) Compute the factor of safety considering no seepage. b) Compute the factor of safety considering full seepage4. a cohesionless soil slope angle β= 24, the internal friction angle φ = 36°, the stability safety factor is ( ).A. K= 1.46 B. K= 1.50C. K= 1.63 D. K= 1.70 5. The following narrative is correct ( ).A. When IL≤0, the clayey soil is in the hard stateB. When IL=0.25, the clayey soil is in the flow state C. IL≥1, the clay is in a plastic state D. IL=0.7, the clay is in soft plastic stateAn infinite slope of clay soil has a slope of 29 degrees. The soil has a specific gravity of 2.7 and a void ratio of 0.47. The soil has a depth of 5m over ledge rock measured vertically. Effective friction angle and soil cohesion are 14 degrees and 25kPa respectively. Assuming the ground water table is in the ground surface, determine the limiting depth of this soil, measured vertically over ledge rock. A 1.25m B 5.95m 3.67m D 6.88m
- A soil profile is shown in Figure ?-?. Compute the shear strength on the horizontal and vertical planes at points ? and ?.Que.5 A long natural slope in overconsolidated fissured clay of saturated unit weight 22kN/m³, is inclined at 14 degrees to the horizontal. The water table is at the surface and seepage is approximately parallel to the slope. A slip surface has developed on a plane parallel to the surface at a depth of 4m. Determine the factor of safety along the slip plane using the residual strenght parameter, o'r=20 degrees.2.) A concrete dam retaining water is shown. If the specific weight of the concrete is 23.54 kN/m3, find the factor of safety against overturning. Assume there is a hydrostatic uplift that varies uniformly from full hydrostatic head at the heel of the dam to zero at the toe and that the coefficient of friction between dam and foundation soil is 0.45. CHOICES: a.) 1.296 b.) 2.961 c.) 6.296 d.) 2.196
- A soil profile is shown in Figure ?-?. Compute the shear strength on the horizontal plane at point ?, and on the vertical plane at point ?.A highway embankment is to be constructed of height 10m over a soft clay deposit of 10m thick overlying firm dense sand. The soft clay has an undrained cohesion of 37.5kN/m² and unit weight of y = 17.5kN/m³. It is decided to adopt stone column technique to improve the load carrying capacity of soft clay deposit. If a equilateral pattern of stone column is adopted with a c/c spacing of 1.2m and the diameter as 0.6m, Estimate the load carrying capacity of stone column as per IS15284 (Part 1): 2003. Assume the stone column as an end bearing long column of length 10m.A 10 m high sope of dry clay sol (unil weight = 20 N/m) with a slope angle of 45 and the circular slip suriace, is shown in the figure (not drawn to the scale). The weight of the slp wedge is denoted by W. The undrained unt cohosion (C) is 60 kPa. 10m Unit weight= 20 kN m C = 60 kPa 10m 448m, 45% The facter of safety of the slooe against sip failure. IS
- A uniformly distrubuted load applied on a strip fooing constructed in sand. Based on Hansen's equations, for a given factor of safety (FoS = 3) find the required width (B). Water table is far below the base of fooing. 800 kPa 1.8 m q D Y Φ с OF Nq 33.3 FOS 20 35 deg kPa www. Ny 33.9 B kN/m³ m q B DProblem 1Explain whether the following are true or false. 1. A lower safety factor implies that a greater fraction of the shear strength is mobilized along the failure surface. 2. In an undrained slope of 1.0 (horizontal): 1.5 (vertical), the critical circle is always a toe circle. 3. The mid-point circle passes through the toe. 4. Taylor’s stability charts can be used only for homogeneous soils.PROBLEM: An infinite slope of granular soil has a slope of 23. The saturated unit weight of sand is 21.5 kN/m3 and the effective friction angle is 35. The sand has a depth of 5 m. over a sledge rock. Depth of sand is measured vertically. Compute the factor of safety of the infinite slope of sand layer when subjected to partial seepage parallel to the slope with water at a vertical depth of 3 m. above the sledge rock. H=5m ORÖCK B=23*