Bundle: Principles Of Foundation Engineering, 8th + Mindtap Engineering 1 Term (6 Months) Printed Access Card
8th Edition
ISBN: 9781305924635
Author: Braja M. Das
Publisher: Cengage Learning
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Use Eq. (12.3), Figure P12.2, and the following values to determine the at-rest lateral earth force per unit length of the wall. Also find the location of the resultant. H = 5 m, H1 = 2 m, H2 = 3 m, γ = 15.5 kN/m3, γsat = 18.5 kN/m3, Φ' = 34º, c' = 0, q = 20 kN/m2, and OCR = 1.
Q.3. A retaining wall is shown in Figure 2. Determine Rankine’s active force, Pa, per unit length of the wall. Also determine the location of the resultant.
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
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Bundle: Principles Of Foundation Engineering, 8th + Mindtap Engineering 1 Term (6 Months) Printed Access Card
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- 45.) A retaining wall supports a horizontal backfill that is composed of two types of soil. First layer: 5.91 meters high, Unit weight of 17.26 kN/m3, coefficient of active pressure of 0.291 Second layer: 5.36 meters high, Unit weight of 18.85 kN/m3, coefficient of active pressure of 0.301 Determine the distance of the total active force measured from the bottom of the wall. Round off to three decimal places.arrow_forwardFor a smooth vertical wall retaining a granular backfill inclined at an angle of a = 15 ° , check whether Eqs . ( 16.70 ) and (16.72 ) ( or Tables 16.9 and 16.10 ) give the same values for the passive earth pressure coefficient . Use Ø' = 30° and 40°.arrow_forwardDetermine the total active thrust, in kN/m, for a retaining wall (height 5.60 m) with horizontal backfill given the following properties: Unit weight = 17.42 kN/m3, angle of internal friction = 32 degrees, Cohesion = 11.76 kPa, Surcharge = 9.32 kPa.arrow_forward
- Determine the total active thrust, in kN/m, for a retaining wall (height 5.12 m.) with horizontal backfill given the following properties: Unit weight = 17.79 kN/m3, Angle of internal friction = 30°, Cohesion = 11.71 kPa, and Surcharge = 9.33 kPa.arrow_forward3) A 5-m-high retaining wall is shown in Figure-2. Determine A) Rankine active force per unit length of the wall and the location of the resultant B) Rankine passive force per unit length of the wall and the location of the resultantarrow_forwardPlease find the earth pressure at rest distribution value and resultant force on the retaining wall in figure below. The static side pressure coefficient is 0.5.arrow_forward
- For a smooth vertical wall supporting a granular backfill with ϕ' = 34°, determine Ka using Eq. (16.22) for α = 0, 5, 10, 15, and 20 degreesarrow_forwardA 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 pressure of a cohesionless soil. 1. Determine the nearest value of the total earth thrust on the wall in KN per lineal meter if the soil is dry. a. 73.1 b. 86.7 c. 62.4 d. 98.1 2. Find the nearest value of the thrust on the wall in KN per lineal meter if owing to inadequate drainage, it is waterlogged to a level of 3.5 m below the surface. a. 112 b. 171 c. 147 d. 153 3. Find at what height above the base of the wall the thrust acts during the waterlogged condition. a. 2.21 m b. 2.00 m c. 1.74 m d. 1.42 marrow_forwardA 6m vertical retaining wall is supporting a cohesion less horizontal back fill having a unit weight of 16kN/m3 and an angle off riction of 32 degrees. It carries a uniforms urcharge of15kN/m3. a)Determine the at rest lateral force per unit length of wall. b) Determine the Rankines active force per unit length of wall. c)Determine the Rankines passive force per unit length of wall.arrow_forward
- 16 Determine the total active thrust, in kN/m, for a retaining wall (height 5.60 m.) with horizontal backfill given the following properties: Unit weight = 17.42 kN/m3, Angle of internal friction = 32°, Cohesion = 11.76 kPa, and Surcharge = 9.32 kPa. Round off to two decimal places.arrow_forwardQ.9 A smooth retaining wall is 4 m high and supports a cohesive backfill with a unit weight of 17 kN/m3. The shear strength parameters of the soil are cohesion =10 kPa and Ø = 10°. Calculate the total active thrust acting against the wall and the depth to the point of zero lateral pressurearrow_forwardA 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 submerged with water table at the surface. Take γ=18 kN/m^3 ,ϕ=30°, γ_sat=21 kN/m^3.arrow_forward
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