SITUATION 2:A retaining wall 6 m high supportscohesionless soil having a dry densityof 1600 kg/m?,angle of resistance 32°and void ratio of 0.68. The surface ofthe soil is horizontal and level with thetop of the wall. Neglecting wall frictionand using Rankine's formula for activepressure of a cohesionless soil.6. Determine the nearest value of thetotal earth thrust on the wall in KN perlineal meter if the soil is dry.а. 73.1c. 62.4b. 86.7d. 98.17. Find the nearest value of the thruston the wall in KN per lineal meter ifowing to inadequate drainage, it iswaterlogged to a level of 3.5 m belowthe surface.а. 112c. 147b. 171d. 1538. Find at what height above the baseof the wall the thrust acts during thewaterlogged condition.а. 2.21 mc. 1.74 mb. 2.00 md. 1.42 m

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Answered: A retaining wall 6 m high supports…

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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Find h ?if the effective stress at bottom=200.85 kN/m². clay Y=18 kN/m³ @=12% 3m 3m 4m Silt G-2.71 S= 70% e = 0.6 Silt Capilary layer.zone Sand RF 72% n = 33% G= 2.68 max = 0.75 e
The profile of a soil consists of a soil layer 3.9 meters below the ground surface. The weight of the soil is 19.59 KN/m³. The water table is located 1.9 below the ground surface. The angle of friction of the soil 21° and a cohesion of 28 KPa. The saturated unit weight of soil below the water table is 18.13 KN/m³. Compute the neutral stress in KPa at a depth of 3.9 meters below the ground surface.
Y=15kN/m³ 몰 Y = 12.5 kN/m³ 0 p = 150 kPa e.= 0.95 C₁ = 0.62 Cv=0.135 Y=27.5 kN/m³ sand 9m Clay Bedrock 25,000 KN ↑ 3m 18m ↑ 5m ↓ A) What is the induced stress so (in kPa) at the midpoint of the clay layer from the point load? B) What is the change of void ratio, se, in the clay layer because of the point load. c) Calculate the settlement (in the nearest cm) at the clay layer because of the point load. Use the one layer approach. D) while the one-layer approach is not accurate to represent the distributed stress from the point load, how many layers would be proper?
20. A 17-m thick soil has water table 4 m. below the ground surface. The soil has a void ratio of 0.53 and specific gravity of 2.65. Above the water table, the soil has a degree of saturation equal to 40.67%. Direct shear test conducted on the soil shows that the an angle of internal friction of 26.04° and cohesion of 17.17 kPa. What is the potential shear strength (in kPa) on a horizontal plane at a depth of 9 m. below the ground surface? Round off to two decimal places.
Q-1: For the following soil system determine the effective stress and pore-water pressure at the point “A" when i) water table is at ground surface ii) water table is 1m below the ground surface (consider ya = 16 kN/m³) 1 m Ysat = 18 kN/m 5 m 5 m Ysat= 18 kN/m Yw = 10 kN/m A Y = 10 kN/m³ (i) (ii)
Question 4 A saturated site is underlain by a 15m thick layer of gravel with friction angle = 40 and lateral stress ratio = 0.5. Calculate the passive lateral stress ratio of the gravel.
The soil profile at a road construction site is as shown in figure (not to scale). A large embankment is to be constructed at the site. The ground water table (GWT) is located at the surface of the clay layers, and the capillary rise in the sandy soil is negligible. The effective stress at the middle of the clay layer after the application of the embankment loading is 180 kN/m². Take unit weight of water, Yw = 9.81 kN/m3. Embankment load boudi Sand GWT 2m y = 18.5 kN° it enit Clay Specific gravity, G̟ = 2.65 Water content, w = 45% Compession index, C. = 0.25 6m %3D %3D Impermeable layer The primary consolidation settlement (in m, round off to two decimal places) of the clay layer resulting from this loading will be
Compute the settlement of the clay layer caused by primary consolidation if the pre consolidation pressure of the clay is 96kPa. use approximate method for average vertical stress.
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 square column foundation with base of 1.51 m is shown in the figure. It carries an axial load of 468 kN and has its bottom resting on the ground water table located h1 = 1.4 m. below the ground surface. h2 = 0.8 m and h3 = 2.5 m. Compute the settlement of the clay layer in millimeter caused by primary consolidation if the preconsolidation pressure of the clay is 98 KPa. |P Shy h1 kak 1:1:1 2222 1:1 I Dry Sand Wet Sand Clay Soil Properties: Unit Weight of Dry Sand = 15.4 KN/m3 Saturated Unit Weight of Sand = 19.4 KN/m3 Saturated Unit Weight of Clay = 18.6 KN/m3 Compression Index = 0.264 Void Ratio of Clay = 0.75 Swell Index = 1/5Cc 11 LEE ILLI CEET EEGGE LLLLLLI TELLIT 1
A level ground surface exists in an area where soil in the underlying stratum has a wet unit weight of 19 kN/m3. The vertical pressure at any depth represents the major principal stress. The vertical pressure (stress) is the product of the soil unit weight and depth. The lateral pressure at a corresponding depth is 0.45 times the vertical pressure and represents the minor principal stress. (a) Determine the principal stresses acting at a depth 4 m below the surface, and draw the Mohr’s circle for the condition. (b) What is the maximum shear stress acting at this depth?

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A retaining wall 6 m high supports cohesionless soil having a dry density of 1600 kg/m³,angle of resistance 32° and void ratio of 0.68. The surface of the soil is horizontal and level with the top of the wall. Neglecting wall friction and using Rankine's formula for active