Details of a retaining wall are shown in Fig. 5 below. Determine the factor of safety against (a) overturning and (b) sliding; the unit weight of the wall material is 23.5 kN/m³. Use Rankine's earth pressure theory. Neglect passive pressure for conservative analysis. Comment on the FS for both overturning and sliding. What measures would you suggest for improving the Factor of Safety, if they don't meet the design criteria? (Note: k₁= K₂ =, Gs = 2.7) 3 20 kN/m² 0.7m (Not to Scale) $'₁ = 35°, c' = 0 kPa, Ydry 18- m 5.8m D = 1.75m 0.8m 0.3m 0.7m 1.85m kN I I 1.5m $'2 = 30°, c'₂ = 20 kPa, kN 0.85m

Details of a retaining wall are shown in Fig. 5 below. Determine the factor of safety against (a) overturning and (b) sliding; the unit weight of the wall material is 23.5 kN/m³. Use Rankine's earth pressure theory. Neglect passive pressure for conservative analysis. Comment on the FS for both overturning and sliding. What measures would you suggest for improving the Factor of Safety, if they don't meet the design criteria? (Note: k₁= K₂ =, Gs = 2.7) 3 20 kN/m² 0.7m (Not to Scale) $'₁ = 35°, c' = 0 kPa, Ydry 18- m 5.8m D = 1.75m 0.8m 0.3m 0.7m 1.85m kN I I 1.5m $'2 = 30°, c'₂ = 20 kPa, kN 0.85m

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter15: Retaining Walls, Braced Cuts, And Sheet Pile Walls

Section: Chapter Questions

Problem 15.8P

See similar textbooks

Similar questions

The cantilever retaining wall, whose cross section is shown below, retains a sandy backfill with soils properties as given in the figure.5.1. Evaluate the stability of the wall against overturning and sliding. Assume that thepassive earth pressure is fully mobilized in front of the wall, i.e. use include passive pressure in your calculations. 5.2. Draw the pressure distribution beneath the retaining wall indicating the numerical values of the maximum and minimum pressures. Given density of concrete = 24kN/m3 revision paper 2020
A gravity retaining wall retains 12 m of a backfill, y = 17.7 kN/m² = 25° with a uniform horizontal surface. Assume the wall interface to be vertical, determine the magni tude and point of application of the total active pressure. If the water table is a height of 6 m. how far do the magnitude and the point of application of active pressure changed? Please solve carefully and don't give wrong answers and box the final answers
(i). Calculate lateral earth pressure for the basement structure. Use the following data, depth of wall 8m, cohesion = 0, angle of friction = 25°, soil type = clay, OCR=2.0, bulk unit weight = 19 kN/m3. (ii)What will change if we would have coarse sand behind the retaining wall instead of clay? Assume compacted coarse sand behind retaining wall and get the recommended values of Cohesion and friction for sand from literature and calculate lateral earth pressure for wall with dimensions given in section (i) and compare both results.
For the retaining wall shown in the figure, compute the factors of safety against overturning and sliding (analyze the latter both with and without passive earth pressure at the toe). Also determine the soil pressure at the base of the wall. Use the Rankine equation to compute passive earth pressure.
Compute for the height of the retaining wall if the Force (CLUE: Ha in the reference book) applied per meter of analysis of the wall is computed as 38,471.12 N/m. Active soil pressure coefficient is 0.333 and the unit weight of the backfill soil is 17,265.50 N/m3.
3) A retaining wall is illustrated IN THE Figure. Determine the Rankine active force, (Pa) per unit length of the wall and the location of the resultant. H = 9 m, H1 = 4 m, Υ1 = 16.5 kN/m3, Υ2 = 20.2 kN/m3, ø'1 = 30, ø'2 = 34, q= 21 kN/m2
Determine the total active thrust, in kN/m, for a retaining wall (height 4.77 m.) with horizontal backfill given the following properties: Unit weight = 17.49 kN/m3, Angle of internal friction = 32°, Cohesion = 11.32 kPa, and Surcharge = 8.6 kPa. Round off to two decimal places.
A retaining wall 7 m high, with its back face smooth and vertical. It retains sand with its surface horizontal. Using Rankine’s theory, determine the active earth pressure at the base when the backfill is dry. Take γ=18 kN/m^3 ,ϕ=30°, γ_sat=21 kN/m^3.
A rigid retaining wall 5m high supports a backfill of cohesionless soil with angle of 40°. The water table is below the base of the wall. The backfill is dry and has a unit weight of 19kN/m³. Determine Rankine's passive earth pressure per meter length of the wall.
A retaining wall 7 m high, with its back face smooth and vertical. It retains sand with its surface horizontal. Using Rankine’s theory, determine the active earth pressure at the base when the backfill is saturated. Take γ=18 kN/m^3 ,ϕ=30°, γ_sat=21 kN/m^3.
Determine the active Rankine earth pressure (magnitude and location) against the 1-foot thick retaining wall in the figure at right.
Calculate the total lateral earth force in rest condition for the retaining wall shown below. ( Note that the bottom 3 m layer is in dry condition )