Figure Q1 shows a vertical cross-section of a site. The ground water table is located at 2 m below the ground surface. Dry and saturated unit weights of the sand are 16 kN/m³ and 20 kN/m³, respectively. The clay is normally consolidated and has a saturated unit weight of 18 kN/m³ and an effective friction angle of 32°. The unit weight of water is taken as 10 kN/m³. (a) Calculate the vertical effective stress at Point A. (b) (c) Calculate the normal stress and shear stress acting on a plane oriented 60° from the horizontal plane at Point A (d) Calculate the horizontal effective stress at Point A. (e) What is the maximum horizontal shear stress that the soil at Point A can take before failure? What is the maximum shear stress along a plane oriented 60° from the horizontal plane that the soil at Point A can take before failure? 2m 4m 2m 8A Sand Clay Figure Q1
Figure Q1 shows a vertical cross-section of a site. The ground water table is located at 2 m below the ground surface. Dry and saturated unit weights of the sand are 16 kN/m³ and 20 kN/m³, respectively. The clay is normally consolidated and has a saturated unit weight of 18 kN/m³ and an effective friction angle of 32°. The unit weight of water is taken as 10 kN/m³. (a) Calculate the vertical effective stress at Point A. (b) (c) Calculate the normal stress and shear stress acting on a plane oriented 60° from the horizontal plane at Point A (d) Calculate the horizontal effective stress at Point A. (e) What is the maximum horizontal shear stress that the soil at Point A can take before failure? What is the maximum shear stress along a plane oriented 60° from the horizontal plane that the soil at Point A can take before failure? 2m 4m 2m 8A Sand Clay Figure Q1
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Question 1
Figure Q1 shows a vertical cross-section of a site. The ground water table is located at 2 m
below the ground surface. Dry and saturated unit weights of the sand are 16 kN/m³ and 20
kN/m³, respectively. The clay is normally consolidated and has a saturated unit weight of 18
kN/m³ and an effective friction angle of 32°. The unit weight of water is taken as 10 kN/m³.
(a)
(b)
(c)
(d)
(e)
Calculate the vertical effective stress at Point A.
Calculate the horizontal effective stress at Point A.
Calculate the normal stress and shear stress acting on a plane oriented 60° from the
horizontal plane at Point A
What is the maximum horizontal shear stress that the soil at Point A can take before
failure?
What is the maximum shear stress along a plane oriented 60° from the horizontal plane
that the soil at Point A can take before failure?
2m
4m
2m
8A
Sand
Clay
Figure Q1
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