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 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: Ym = 18.9 kN/m³, Ysat = 19.8 kN/m³; ' = 32°Clay: Ym = 20.1 kN/m²; ' = 18°, c' = 20 kPaAssuming that the entire soil is in the active state, find the location andmagnitude of the total thrust on the wall.5 mSand3 m4 mClayFigure: Gravity WallGL-=-=-=

Total active thrust is 603.36KN/ metre width of wall.Location is 3.46m from bottom of…

A smooth gravity wall retains a 12 m-high backfill as shown in the figure below. The top 8 m is sand, which is underlain by some clay. The soil properties are as follows: Sand: Ym = 18.9 kN/m³, Ysat = 19.8 kN/m³; ' = 32° Clay: Ym = 20.1 kN/m²; ' = 18°, c' = 20 kPa Assuming that the entire soil is in the active state, find the location and magnitude of the total thrust on the wall. 5 m Sand 3 m 4 m Clay Figure: Gravity Wall GL -=-=-=

A smooth gravity wall retains a 12 m-high backfill as shown in the figure below. The top 8 m is sand, which is underlain by some clay. The soil properties are as follows: Sand: Ym = 18.9 kN/m³, Ysat = 19.8 kN/m³; ' = 32° Clay: Ym = 20.1 kN/m²; ' = 18°, c' = 20 kPa Assuming that the entire soil is in the active state, find the location and magnitude of the total thrust on the wall. 5 m Sand 3 m 4 m Clay Figure: Gravity Wall GL -=-=-=

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A deposit of sand exhibited the following properties: Angle of internal friction, = 35° Dry unit weight, yd = 17 kN/m³ Saturated unit weight, Ysat = 20.7 kN/m³ will Man 59 2 = F 20- 18.4 What is the shearing strength of the sand along a horizontal plane at a depth of 4 m given that the water table is at a depth of 2.5 m from ground surface? Find the shear strength when the water table rises to the ground surface.
Retaining wall.
Q/Along flexible strip Looting of 2.5m width having a smooth buse, is subjected to aurilor distributed load of 80 kN/m². Determine the vertical stress intensitres al adepth of 2m below: i) center line of the looting 2:5m (1) at side face of the looting 2m ii) at a point 1-5m, from the side lace t T₂ = = [2 + Sin α cos (d+ 2B)] 옺[a 94
2. Consider a rectangular footing 3.2 m x 4.5 m to be constructed in a uniform clayey sand to support allowable loads as shown in Figure Q2. Assuming general shear failure would take place, determine the safety factor against bearing capacity failure when the ground water table is at 1.0 m above the ground surface. Comment on the obtained result.
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
A thin clay layer passes through the soil at an angle of 30° behind an 8m high gravity retaining wall. A structure 5m wide, applying a uniform stress of 40kPa to the sandy soil, also acts on this section of soil as shown in Figure 3.1. The properties of the clay are ??=25???, ∅?=0, ?′=0 and ∅′=20°. The sandy soil properties are ?′=0, ∅′=35°, ????=16??/?2, ????=20??/?2, and between the sand and the wall the properties are ?′?=0 and ∅′?=30°. Assuming that failure occurs along the clay layer, use Coulomb’s method to calculate the horizontal force required from the wall in the short term to prevent slip.
Q3. For the retaining wall shown below, the foundation and the backfill soils have the same properties. Use Rankine analysis to calculate the following: 100 kN/m² (a) Calculate the active lateral earth pressures distribution. (b) Determine the FS against sliding NOT TO SCALE (c) Determine the FS against overturning. SAND: 118 kN/m² 6-30; 8=37. c0 pd concrese 2m
Question 1 a) Determine the factor of safety, for the short-term condition, of the embankment shown inFigure 1, for the potential failure circle indicated. b) Determine the FS for the embankment given in Figure 2, if the soil used is clay and the embankment is surrounded by water to its crest level. (9.8m 145m £3 m. Bm clay DIT Cu 50 kPa 8=19 k lm3 R=20m 5m 1m Saturarteal clay %3D Figure 2