5. A tied back wall is shown in the figure. It carries a uniform surcharge of 10 kPa on the ground surface. Dry and effective unit weights of soil are 18 kN/m³ and 10.2 kN/m³ respectively. Rankine passive earth pressure coefficient is 3.4. Tie rods is palced 1 m below the ground surface a) Compute the embedment depth of tied back wall b) Compute the total active force on the wall c) Compute the anchor force on the tied back wall
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- You are working for a consulting firm that has been asked to evaluate the factor of safety of the wall shown in the figure supported by a well-degraded sand. The resultant load behind the concrete wall acts at the one third point. Dw 1m 1.5 m 24 kN/m³ y = 20 kN/m³ 26.5 kN/m 24° = 34° n = 0.4 3 m (a) Determine the factor of safety if Dw − D > 1.5B. Ignore the lateral passive resistance due to the soil in front of the wall. (b) Determine the factor of safety if the ground water table rises to 0.5 m below the base of the wall. Discuss the significance of your observations.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 TaDetermine the stability of the cantilever gravity retaining wall shown in figure below. The existing soil is a clay and the backfill is a coarse-grained soil. The base of the wall will rest on a 50-mm-thick, compacted layer of the backfill. The interface friction between the base and the compacted layer of backfill is 25.0°. Groundwater level is 8 m below the base. 1.0 m Batter 1:20 0.4 m 1.8 m 9, = 20 kPa 8⁰ Ysat = 18 kN/m³ cs = 25° 8 = 15⁰ Backfill Drainage blanket Y = 23.5 kN/m³ 3 m Existing soil 6.1 m 0.9 mi Ysat = 19 kN/m³ = 35° % = 25°
- Example: Please find the earth pressure at rest distribution value and resultant force on the retaining wall in the figure below; The static side pressure coefficient is 0.5 q=20kpa r=18kN/m rsat=18kN/m c=0kpa shared by H 10m1) The fill behind the brickworks retaining wall in Figure 1 has a density of 1800kg/m³. A live load surcharge of 10kN/m? is at level shown in the Figure. The density of the brickworks is 1900Kg/m³, the coefficients of lateral active and passive pressures are 0.33and 3.0. The coefficient of friction between soil and base of wall is 0.4. a) Check the stability of the wall. Calculate the factor of safety against sliding and overturning for the retaining wall, if (i) Water table is at c, and surcharge w= 10KN/m? (ii) Surcharge w = 0, and water table is at surface level b [There is no drainage facility]. (All measurements in centimeters) Surcharge, w (Variable) Water Table (Variable) 4545 457 45 365 '906Given: 1. Structural Component: Beam 300 mm x 400 mm Column 400 mm x 400 mm Slab thickness 110 mm 2. Dead Load: Super Imposed dead load = 4.5 KPa (including slab weight) CHB = 3.11 KPa 3. Seismic Parameter: Soil Profile - Sb Closest distance to the source - 10 km Ductility Coefficient R = 8.0 Seismic Zone Z=0.40 Ct = 0.0731 A. Compute TOTAL LATERAL FORCES in the 2nd floor? B. Compute LATERAL FORCES in the 3rd floor?
- A retaining wall is shown in the Figure below. For each problem, determine the Rankine active force, Pa, per unit length of the wall and the location of the resultant. H 12 m H₁ 4m Surcharge Frictionless wall Sand 71 di =0 Y₁ Y₂ 17 kN/m² 23.2 kN/m² ↓ Groundwater table i(deg) : (deg) 36 42 4 25 kN/m² Sand Ey (saturated unit weight) DE MOITAMINE 72 -04. A retaining wall shown in the figure, determine the Rankine Active force, Pa, per unit length of the wall and the location of the resultant. H = 10 ft, H1 = 5 ft, Y1 = 105 lb/ft? , Y2 = 122 lb/ft? , þ1 = 30° , þ2 = 30° Sand Y1 H1 ci = 0 Groundwater table H. Sand Y2 (saturated unit weight) c2 = ( Frictionless wallFor a rigid retaining wall as seen in the following figure, compute Coulomb's active lateral earth thrust against the wall face AB and the point of application of the resultant force. H (m) 4 4 Wall Friction Angle, 8 (degree) 20 17 (degree) 0 0 0 (degree) 0 0 Backfill Soil Property 7 (kN/m³) 19.2 18.5 с (degree) (kPa) 40 0 34 0 H B a Sandy backfill with unit weight y and angle of internal friction P₁
- Hi guys please help me answer this question with detailed solution. Thank you A small unyielding wall retains a dense cohesionless soil with no lateral movements of soil (at rest conditioned is assumed). the wall has a height of 2.5 m. the cohesionless soil has a unit weight of 16 kN/m3 and a saturated unit weight of 18.39 kn/m3. Angle of internal friction is 37 degrees. The ground water table is located 1.0 m below the ground level. A. Compute the lateral force acting on the wall B. Compute the location of the total lateral force above the bottom of the wall C. Compute the moment acting on the wall due to this lateral loadQuestion 2 For the gravity retaining wall (concrete) shown in figure below; if the angle B has changed to be 80°, Ø1= 29°; and a = 5° use Coulomb's theory to calculate the horizontal and vertical components of the active earth pressure. %! Y-18.5 kN/m :-32 5.7 m 5m 283 m P. 75 2.167 m 1.5 m 1.53 m 0.8 m 0.22 m - 18 KN/m 0.3 m 0,8 m :-24 3.5 m 30 KN/m?A retaining wall 6 m high is supporting a horizontal backfill of soil having a void ratio of 0.5 and specific gravity of 2.7. The angle of internal friction is 32°. Compute the rankine active force on the wall if there is no water. [ Select] Compute the rankine active force on the wall if the water table is on top of the horizontal backfill level. [Select J Compute the rankine active force on the wall if the water table is at the bottom of the wall and the water content is 10%. I Select