Q.3) Detemine the increase in vertical stress at a depth 4 m below point A due to surface loads shown in Fig.1. 1.5 m 1.5 m 1.5 m q- 100 kN/m? 1.5 m q- 160 kN/m? q- 225 kN/m? 1.5 m
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- Repeat Problem 10.12 for q = 700 kN/m2, B = 8 m, and z = 4 m. In this case, point A is located below the centerline under the strip load. 10.12 Refer to Figure 10.43. A strip load of q = 1450 lb/ft2 is applied over a width with B = 48 ft. Determine the increase in vertical stress at point A located z = 21 ft below the surface. Given x = 28.8 ft. Figure 10.43B A 6.0m Ce 5.0 m 4Problem (4.4): Given: q= 100 kN/m. Find: The vertical stress o, at points 0, 1, and 2 shown in Fig. (4.8)? 3.2m y 2m G.S. 4m 1m 3m 7.
- Refer to Figure P3.2. Vane shear tests were conducted in the clay layer. The vane (tapered) dimensions were 63.5 mm (d) x 127 mm (h), iB = iT = 458 (see Figure 3.23). For the test at A, the torque required to cause failure was 51 N ? m. For the clay, given: liquid limit = 46 and plastic limit = 21. Estimate the undrained cohesion of the clay for use in the design by using Bjerrum’s l relationship [Eq. (3.40a)].Q.3) Detemine the increase in vertical stress at a depth 4 m below point A due to surface loads shown in Fig.1. 1.5 m 1.5m 1.5 m A 9-100 kN/m 1.5m 9-160 kNm2 9-225 kN/m2 1.5 m Fig. 1Q3/ Determine the increase in vertical stress at (2.0) m below point (A) due to a surface load shown in Fig.(1), Q4/ In tu 6 m 2 m 2m 6m Aq=175 kN/m² Aq= 100 kN/m² Fig. (1) Jab
- INDUCED LOADS ARE APPLIED ON THE GROUND SURFACE AS SHOWN. POINT LOADS: PA= 250KN PB= 175KN PC= 300KN LINE LOAD: Q1= 150KN/M Q2= 225KN/M DETERMINE: a. THE TOTAL VERTICAL STRESS INCREASE AT POINT A AT A DEPTH OF 5M DIRECTLY UNDERNEATH LINE AB.b. THE TOTAL VERTICAL STRESS INCREASE AT POINT O, 8M FROM A TO THE POSITIVE Y AXIS, PERPENDICULAR TO LINE AB AT THE SAME DEPTH.c. THE TOTAL VERTICAL STRESS INCREASE DIRECTLY AT A POINT BELOW THE LINE LOAD 1, PERPENDICULAR TO POINT O AT THE SAME DEPTH.Using Boussinesq’s Equation determine the vertical stress increase ΔϬz, at point C at a depth 3.0 meters , if the point loads at A,B and D are 200 KN, 400KN and 600KN respectively. ΔϬzC =_____________KN/m2.An embankment load on a silty clay soil layer as shown below. Determine the stress increase under the embankment at points A and B that are loaded at a depth of 6 m below the ground surface. Prob. 5 m 1H:2V 1H:2V 1H:1V 8 m Y=18 kN/m y=18 kN/m 6 m : B A
- (Use The Figure (10.20) to find the solution of this question) An embankment load on a silty clay soil layer as shown below. Determine the stress increase under the embankment at points A and B that are loaded at a depth of 6 m below the ground surface. 5 m 1H:2V, 1H:2V 1H:1V 8m y-18 kN/m y-18 kN/m" 6 m B IA Figure 10.19 Embankment loading 0.50 3.0 20 1.6 14 045 12 LO 040 09 07 0.35 06 030 04 - 025 020 02 0.10 005 Figure 10.20 Osterberg's chart for determination of vertical stress 0.00 due to embank- 0.01 100 ment loading 327 atendetoa NQ2/ For the uniformly distributed loaded area as shown below, estimate the vertical stress at point A only that located at 4 m under the ground surface. 2.0 m qı= 50 kN/m² 2.0 m 92=\100 kN/m² A 2.0 m 2.0 m q3= 150 kN/m? 8 m1. Point loads of magnitude 100, and 150 kN act at A, and C, respectively. Determine the increase in vertical stress at a depth of 7 m below the point B. B A 3 m 5 m 1. Increase in stress