A vertical cantilever wall 6 m high retains soil that has a following properties Unit weight of soil = 19.2 kN/m^3 Angle of friction = 30 degrees The surface of the backfill behind tthe wall is inclined at a slope of 3 horizontal to 1 vertical and the wall has moved sufficiently to develop the active condition. a) Determine the Rankine Coefficient of active earth pressure. b) Find the normal force acting at the back of the wall considering a unit width. (in kN). c) Determine the shear force acting at the back of the wall. (in kN)

A vertical cantilever wall 6 m high retains soil that has a following properties Unit weight of soil = 19.2 kN/m^3 Angle of friction = 30 degrees The surface of the backfill behind tthe wall is inclined at a slope of 3 horizontal to 1 vertical and the wall has moved sufficiently to develop the active condition. a) Determine the Rankine Coefficient of active earth pressure. b) Find the normal force acting at the back of the wall considering a unit width. (in kN). c) Determine the shear force acting at the back of the wall. (in kN)

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter14: Lateral Earth Pressure: Curved Failure Surface

Section: Chapter Questions

Problem 14.11P

See similar textbooks

Similar questions

Q.4 A 6 m tall cantilever wall retains a soil that has the following properties: c' = 0, Ø = 30o, and ϒ= 19.2 kN/m3.The ground surface behind the wall is inclined at a slope of 3 horizontal to 1 vertical, Determine the active forces acting on the back of this wall using coulomb’s theory.
A wall of 8 m height retains sand having a density of 1.936 Mg/m3and angle of internal friction of 34°. If the surface of the backfill slopesupwards at 15° to the horizontal, find the active thrust per unit length ofthe wall. Use Rankine’s conditions.
A vertical retaining wall 6 m. high retains a soil having the following properties. Unit weight of cohesionless soil = 19.2 kN/m3, angle of internal friction = 30°. The ground surface behind the wall is inclined at a slope of 3 horizontal and 1 vertical and the wall has moved sufficiently to developthe active condition.• Compute the Rankine’s coefficient of active earth pressure.• Compute the normal force acting on the back of the wall using Rankine’s theory.• Compute the vertical component of the force acting on the back of the wall using Rankine’s Theory.
A wall 6m high retains sand having a dry density of 15.40 KN/m3. Angle of internal friction of 32' and void ratio of 0.68. Use rankine theory. a. Determine the active thrust in kN per unit length of wall if there's ground water table located 2.5m below the ground. b. Determine the location of resultant thrust from the ground surface considering the ground water table located 2.5m below the ground.
A smooth gravity wall retains a 12 m-high backfill as shown in the figurebelow. The top 8 m is sand, which is underlain by some clay. The soilproperties are as follows:Sand: γm = 18.9 kN/m 3, γsat = 19.8 kN/m 3; φ' = 32°Clay: γm = 20.1 kN/m 3; φ' = 18°, c' = 20 kPaAssuming that the entire soil is in the active state, find the location andmagnitude of the total thrust on the wall.
A retaining wall with vertical backfill of height 10m supports a cohesion less soil of unit weight 17.3 kN/m3 and an angle of shearing resistance =30 degree the surface is horizontal determine The magnitude of the active lateral pressure at the toe of the wall The point of application of the force The active force exerted on the wall
A retaining wall 6m. high is to support a horizontal backfill. The upper 3m. of backfill has a unit weight of 16kN/m3, angle of friction of 30 degree. Water table is located 3m. below the ground surface and the saturated unit weight of the soil below the water tale is 19kN/m3 with an angle of friction of 36 degree. It carries a uniform surcharge of 25 kN/m2. 1. Compute the Rankine active force per unit length of the wall assuming that the wall can yeild sufficientlyto develop active state. 2. Compute the location of the resultant line of action from the bottom of the wall. 3. Compute the moment due to the resultant active force.
A retaining wall 9 m high supports a cohesionless sandy soil with its face vertical as shown in figure below. Find active earth pressure on the wall , Take Yw = 9.81kN / (m ^ 3)
A 4.5 m high retaining wall is restrained from yielding. The wall supporting a horizontal overconsolidated soil having a unit weight of 17.4 KN/m3 with an angle of friction of 30°. Groundwater table is located 3 meters below the ground surface. Saturated unit weight of soil is 18.2 KN/m3. The soil has an overconsolidation ratio of 2. Compute the coefficient of earth pressure at rest. Compute the lateral force per unit length of wall Determine the location of the resultant force from the bottom of the wall.
Q.5 A retaining wall has a vertical back and is 7.32 m high. The soil is sandy loam of unit weight 17.3kN/m3. It has a cohesion of 12 kN/m2 and Ø = 20°. Neglecting wall friction, determine the active thrust on the wall. The upper surface of the fill is horizontal.
Determine the active thrust pressure for the backfill soil having an internal friction angle of 35° and unit weight of 110 lb/ft3. The height of the retaining wall is 18 ft.