Q- If a retaining wall 5m high is restrained from yielding, what is the at-rest earth pressure per meter length of wall ? (Consider the backfill is cohesionless soil having b = 30° and y = : 18 kN/m³

Consider the given retaining wall with backfill. The active earth pressure at base of wall is kN/m2. (upto two decimal places) 2m 5m 1m Į II (III) G=2.65 e = 0.85 = 0.08 w = 15° c=15 kN/m² G=2.7 c=0.8 $=10° c=20 kN/m² G=2.7 e=0.6 $ = 20° c=12 kN/m² A

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ASAP

The following figure shows a section of an anchored retaining wall embedded into a saturated stiff clay layer. The sand has a unit weight of = 18 kN/m³, c' = 0 kPa and o' = 34º. The clay has a unit weight of = 20 kN/m³, c₁ = 80 kPa and = 0°. A uniform pressure of 40 kPa is applied on the soil surface. The short term stability of the wall is considered in an undrained analysis. Use the Rankin's theory of lateral earth pressure to determine the active and passive horizontal stresses. You should apply the requirements of AS 4678 and the partial factors of safety method in estimation of soil pressures. Assume the soil is in-situ and use a structural classification factor of ₁ = 1. 3m 1m Water table 1.5m 40 kPa Not to Scale Sand Clay Ta

is 7 m high with a horizontal backfill. For 12.4 A vertical retaining wall the backfill, assume that y = 16.5 kN/m', ' 26°, and c' = 18 kN/m2. Determine the Rankine active force per unit length of the wall after the occurrence of the tensile crack. For the retaining wall, determine the Rankine active force per unit length of the wall and the location of the line of action of the 12.5 resultant. 12.6 For the retaining wall, H = 8 m, h' = 36°, a = 10°, y = 17 kN/m', and e' = 0. a. Determine the intensity of the Rankine active force at z 2 m, 4 m, and 6 m. b. Determine the Rankine active force per meter length of the wall and also the location and direction of the resultant. 12.7 Given: H = 7 m, y = 18 kN/m', ' = 25°, c' = 12 kN/m2, and a = 10°. Calculate the Rankine active force per unit length of the wall after the occurrence of the tensile crack. YI H Groundwater table H Figure P12.2

Please solve under Geotechnology II Engineering.

You are reviewing the stability of the gravity wall when the backfill has properties with: Φ' = 35° and γt = 16.5 kN/m3. The soils in front of the wall is ignored in the stability analysis, and the drainage blanket has no influence. Assume the coefficient of the base friction is, μ = 0.3, and the unit weight of concrete is γc = 23.5 kN/m3. a) draw the lateral earth pressure diagram and determine the total active lateral force. b) determine the factor of safety against overturning. c) determine the factor of safety against sliding.

(4) The backfill behind a retaining wall is clay with a unit weight of 18 kN/m', cohesion of 15 kPa, and an internal friction angle of 30°. The height of the wall is 6 m. The back of the wall is vertical and smooth, and the surface of the backfill is horizontal. Please calculate the active earth pressure on the wall back, including its distribution, the resultant force and its position.

Q-1: Figure-1 shows a 4.5-m-high retaining wall. The wall is restrained from yielding. Then find, the following conditions: A) Completely dry soil (no ground water) B) Completely saturated soil system