What are the active earth pressure coefficient and passive earth pressure coefficient of soil, if angle of friction 35° and backfill inclination 10º.
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Q: What are the active earth pressure coefficient and passive earth pressure coefficient of soil, if…
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- Calculate the active earth pressure coefficient for the backfill soil using both the Rankineand Coulomb Earth Pressure theories. Is there a significant difference in the two Kavalues?a. Rankine's active earth pressure coefficient: ka1 = (for the upper layer) ka2 = (for the lower layer) b. Lateral pressure due to soil (in kN/m2 per meter length of wall): @ point R = @ just above point S = @ just below point S = @ point T = Thank you please helpGiven data: Depth of Clay layer =4Depth of Sand layer=2unit weight of clay kN/m3=23unit weight of sand kN/m3 =21Ø in both layers=30C´= 0
- For a soil, given e= 0.75, w= 22%, Gs= 2.66, calculate the moist unit weight of soil in KN/m3. a.18.91 b.14.91 c.78.03 d.94.85A layer of silty soil of thickness 5 m lies below the ground surface at a particular site and below thesilt layer lies a clay stratum. The ground water table is at a depth of 4 m below the ground surface. The following data are available for both the silt and clay layers of soil. Silt layer: ?10= 0.018 mm, e= 0.7, and Gs = 2.7 Clay layer: e = 0.8 and Gs = 2.75 Required: (a) Height of capillary rise, (b) capillarypressure, (c) the effective pressure at theground surface, at groundwater table (GWT)level, at the bottom of the silt layerand at a depth of H =6 m below groundlevel, and (d) at a depth 2 m below ground level.(Sketch or draw the stress distribution diagram).Given data: Depth of Clay layer= 5 Depth of Sand layer= 5 Saturated unit weight of clay kN/m3 = 17 Saturated unit weight of sand kN/m3 = 18 Height of Embankment= 4 Unit weight of Embankment kN/m3= 17
- Define Westergaard Stress Distribution.Referring to the basic concepts for studying lateral earth pressures, calculate the magnitude of lateral force resulting from an active soil pressure against the back of a frictionless wall 6 m high. The surface behind the wall is level, with the retained soil having an angle of internal friction equal to 37° and a unit weight of 18 kN/m3.The soil profile at a site consists of 5 m sand underlain by clay layer. The ground water table is 2 m below the ground surface. Average void ratio of sand is 0.52. Water content of clay is 42% and degree of saturation of sand above water table is 37%.Assume specific gravity of sand and clay is 2.65. 1. Compute the unit weight of clay. a. 19.82 kN/m³ b. 17.47 kN/m³ c. 18.62 kN/m³ d. 16.20 kN/m³ 2. Compute the total pressure 10 m below the ground surface. a. 185.41 kPa b. 160.25 kPa c. 140.53 kPa d. 153.62 kPa 3. Compute the effective pressure 10 m below the ground surface. a. 106.94 kPa b. 96.52 kPa c. 115.62 kPa d. 108.36 kPa
- Provide the following ? Construct a coulomb’s wedge theory for soil pressure distribution.A 10 m clay stratum is overlaying a rock stratum. If water table is at the ground surface, calculate the overburden soil pressure at the middle of the clay layer using the ff. properties of clay: ∂sat = 17.95 kn/m3, e = 1.1 , LL = 60%Discuss about the earth pressure of soil in rest condition.