pressure of 450 kPa. If the drained friction angle is 34°, determine:

6. 7. Calculate the induced vertical stress at point A at a depth of 5 feet. The surface stress in the shaded areas is 3000 lb/ft2. Hint: The contributions of the shaded areas must be calculated separately and then added together. The contribution from the lower area will require the use of imaginary rectangles. (Answer: 1892 lb/ft2, yours may differ slightly) Four 40' diameter fuel tanks are constructed in a square pattern. The tanks apply a maximum surface pressure of 5000 lb/ft2. The spacing of the tanks is 50 feet center- center. What is the induced vertical stress beneath the center of the area at depths of 20 feet and 50 feet? (1400 and 1700 lb/ft2, some variation expected from chart reading)

the profile of on 2 m from the load. 5-11 A uniform surface load of 220 kPa is applied over the area shown below. Estimate the stress increase in soil due to the surface load at a depth of 15 m below point A. 10 m 20 m IT 10 m A

- Once answered correctly will UPVOTE!!