The plan of a rectangular foundation shown in figure transmits a uniform contact pressure of 120 kN/m². Determine the vertical stress induced by this loading at point B under a depth of 5 m. (40 marks) 25.0 15.0 6.0- 4.0 B•
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Q: Determine the vertical stress at point A (use influence factors) at the depth of 8m and point B (use…
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Q: A foundation (Figure 1) transmits a stress of 100 kPa on the surface of a soil deposit. a. Evaluate…
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- Determine the vertical stress at point A (use influence factors) at the depth of 8m and point B (use Newmark's influence chart, show the foundation on the chart) located at the depth of 5m.Q-A hollow rectangular masonry pier 600 mm x 900 mm and 150 mm thick transmits a vertical load of 500 KN in a vertical plane bisecting the 900 mm side and at an eccentricity of 100 mm from the geometrical axes of the section. Determine the maximum and minimum stress intensity in the section.4:50, 100, and 150 kN point loads are applied at Points A, B, and C, respectively, on the ground surface as seen in the figure. Compute the vertical stress increment under Point D down to the depth z=20 m. Use Vertical stress Increment under corner of rectangular footing? 150kn 7.5m 50kn 2m™ (Plane view) 3m 5m 100kn
- 7. A shallow square foundation with the dimension of 2.5m by 2.5m is constructed at a depth of 1.5m below the ground surface to support a column load of 250kN. The foundation plan is shown on the following influence chart for point A located 3.5m below the surface. a. Calculate the length of the scale (AB) of the influence chart. b. Calculate the increase in vertical stress at point A. Point A A I. B Influence Value = 0.005 (Show all working calculations.)Calculation Example Foundation 3 m x 4.5 m 4.5 m Load 2025 kN -3 m -1.5 m- Determine the increasing of vertical stress below point A, B, and C at the depth of 3 Flan m. Section3. Point A lies in a clayey sand layer with ' = 38, c' = 10 kPa, and Ko = 0.5. The ground surface is flat. A planned construction operation will cause the vertical effective stress at point A to reach 80 kPa. a. Use a compass to draw the expected MC for point A (after construction) on the space shown on the right. b. Will point A reach failure? Explain your answer with one sentence.
- 5.4 A shallow foundation 25x18m carries a uniform pressure of 175kN/m². Determine the vertical stress at a point 12m below the mid-point of one of the longer sides (a) using influence factors, (b) by means of Newmark's chart.3. Point A lies in a clayey sand layer with $' = 38, c'= 10 kPa, and K, = 0.5. The ground surface is flat. A planned construction operation will cause the vertical effective stress at point A to reach 80 kPa. a. Use a compass to draw the expected MC for point A (after construction) on the space shown on the right. b. Will point A reach failure? Explain your answer with one sentence.A circular ring foundation for an overhead tank transmits a contact pressure of 300 kN/m2 .Its internal diameter is 6 m and external diameter 10m. Compute the vertical stress on thecenter line of the footing due to the imposed load at a depth of 6.5 m below the ground level. The footing is founded at a depth of 2.5m
- A 6 m. x 9 m. rectangular foundation carrying a uniform load of 288 kPa is applied to the ground surface. Compute the total vertical stress in kPa due to this uniform load at a depth of 6 m. below the center of the loaded area if unit weight of soil is 18,30 kN/m.1) (30 points) Find the stress beneath Point B of the 40 ft by 80 ft. L-Shaped flexible mat foundation at depth (Z) = 20 ft. deep. Mat load is 200 psf. 80' 20 200 psf 1401 20 60A point load of 870kN is applied to a soil. At a depth of 2.5m directly below the applied load, determine the vertical stress in kPa. [2 marks] At 3.5m to the left of the 870kN load in Q1.9 above, a 640kN point load is applied, together with a 560kN point load 4.5m to the right of the 870kN load in Q1.9 above. Determine the vertical stress 2.5m directly below the 870kN load. [3 marks]