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) A 3

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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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)
Transcribed Image Text: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)
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