6. Details of a retaining wall are shown in the figure below. The unit weight of the wall 2/3 to consider the cohesion and material is 23 kN/m³. Assume a reduction factor K friction angle at the base slab. Check the stability of the wall in terms of overturning and sliding failure. Use Rankine's theory to compute the active earth pressure. 6.5 m m Ye= 23 kN/m³3 4 m -1.5m Soil 2 Y2 = 17 kN/m³ c₂ = 10 kN/m² 42 = 25° a = 15° Soil 1 Y₁ = 16 kN/m³ c₁ = 0 kN/m² 4₁ = 30°

6. Details of a retaining wall are shown in the figure below. The unit weight of the wall 2/3 to consider the cohesion and material is 23 kN/m³. Assume a reduction factor K friction angle at the base slab. Check the stability of the wall in terms of overturning and sliding failure. Use Rankine's theory to compute the active earth pressure. 6.5 m m Ye= 23 kN/m³3 4 m -1.5m Soil 2 Y2 = 17 kN/m³ c₂ = 10 kN/m² 42 = 25° a = 15° Soil 1 Y₁ = 16 kN/m³ c₁ = 0 kN/m² 4₁ = 30°

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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Question 1: The cross-section of a cantilever retaining wall is shown below. Calculate the factor of safety with regards to overturning, sliding and bearing capacity (Use Rankine). Use Yeonerete = 23.58 kN/m³ and k, =k, = 2/3 F10 0.5 m H =0.458 m Yi = 18 kN/m³ di=30° cj=0 H2=6 m 10 1.5 m = D 0.7 m H3=0.7 m C + 0.7 m + 0.7 m →l+- 2.6 m 9 kN/m³ d'½=20° cz=40 kN/m²
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Prob.9. A retaining wall 6 m high with vertical back, supports a cohesive backfill having unit weight 19 kN/m³, apparent cohesion = 26 kN/m², an = angle of internal friction is zero. Calculate_ (i) Depth of tension crack (ii) lateral active earth pressure intensity at base
2. Figure 2 shows a non-yielding vertical wall retaining a sandy backfill underlain by clay. Determine the magnitude of the resultant at-rest force per unit length on the wallI, Pa Sand y= 18 kN/m d'= 34", e 0 OCR = 2 4m G.W.T 2 m Clay Yu=19 kN/m LL = 36, PL = 14. OCR = 3 Figure 2
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Please solve with full solutions and diagrams as needed please. assume X=8
Given data: Depth of Clay layer =4Depth of Sand layer=2unit weight of clay kN/m3=23unit weight of sand kN/m3 =21Ø in both layers=30C´= 0
Problem 10 The backfill and foundation sand have unit weight of y = 135 pcf and Ø = 38. The backfill has a slope of 17 degrees and resultant force Ra acts parallel to the backfill slope as shown below. The friction angle between the base of the wall and the foundation sand is 8-2/30. The factor of safety against sliding and overturning, respectively, are most nearly (neglect passive pressure): W=5,531 lb/ft 17° Ra=2576 lb/ft 9.0 12.0' 17 5.54 2.5 1.5 A. 1.1 and 2.8 B. 1.3 and 3.8 C. 1.3 and 2.8 1.1 and 3.8 ABCD 5.0 1.5 4.0
3. Consider a 3 m high (H) retaining wall with a vertical back (0 = 0") and a horizontal 10 granular backfill. Given: X = 15.7 kN/m³, 8=15, and 6 = 30. Approximately, the passive force, P, using Coulomb method 49nimat90.maa.0= 8' (deg) (deg) 10 15 20 25 2.464 2.830 3.286 3.855 4.597 30 3.000 3.506 4.143 4.977 6.105 35 3.690 4.390 5.310 6.854 8.324
6. Details of a retaining wall are shown in the figure below. The unit weight of the wall material is 23 kN/m³. Assume a reduction factor K = 2/3 to consider the cohesion and friction angle at the base slab. Check the stability of the wall in terms of overturning and sliding failure. Use Rankine's theory to compute the active earth pressure. Soil 2 Y2 = 17 kN/m³ 6.5 m Im 2 m <-1.5m - Yc = 23 kN/m³ c₂ = 10 kN/m² 92 = 25° a = 15⁰ Soil 1 Y₁ = 16 kN/m³ c₁ = 0 kN/m² P₁ = 30°
Analyze the stability of the reinforced cantilever retaining wall based on the three failure modes; : Sliding : Overturning : Bearing Stress 1. Unit weight of soil Ys = 18.5 kN/m³ 2. Unit weight of Conc Yc = 24 kN/m³ 3. Internal friction angle = 30° 4. Coefficient of friction between soil and concrete bass M = 0.35 %3D 5. Bearing capacity of soil = 150 kN/m2 o 45m Soon 3. 0145m 2.am
Prob.9. A retaining wall 6 m high with vertical back, supports a cohesive backfill having unit weight 19 kN/m³, apparent cohesion = 26 kN/m², an = angle of internal friction is zero. Calculate_ (i) Depth of tension crack (ii) lateral active earth pressure intensity at base