Ground surface n = 13.2 kN/m 2. The soil profile for a proposed construction site is shown. The groundwater table is located 2 m below the ground surface. Assume geostatic conditions and ignore any negative pore-water pressures due to capillary rise. Sand Ysat = ? G, = 2.70 n= 0.5 A (a) What is the effective stress (kPa) at point A? (Ans: 43 kPa) (b) What is the effective stress (kPa) at point B? (Ans: 82 kPa) (c) Ten years from now, the depth of the groundwater table will change, resulting in a new effective stress at point B of 72.6 kPa. Based on this information, how far below the ground surface will the new location of the groundwater table be? (Ans: 0m; GWT is at the ground surface) Clay Ysat = 19.6 kN/m B
Ground surface n = 13.2 kN/m 2. The soil profile for a proposed construction site is shown. The groundwater table is located 2 m below the ground surface. Assume geostatic conditions and ignore any negative pore-water pressures due to capillary rise. Sand Ysat = ? G, = 2.70 n= 0.5 A (a) What is the effective stress (kPa) at point A? (Ans: 43 kPa) (b) What is the effective stress (kPa) at point B? (Ans: 82 kPa) (c) Ten years from now, the depth of the groundwater table will change, resulting in a new effective stress at point B of 72.6 kPa. Based on this information, how far below the ground surface will the new location of the groundwater table be? (Ans: 0m; GWT is at the ground surface) Clay Ysat = 19.6 kN/m B
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Ground surface
2. The soil profile for a proposed construction site is shown. The
groundwater table is located 2 m below the ground surface. Assume
geostatic conditions and ignore any negative pore-water pressures
due to capillary rise.
Yt = 13.2 kN/m
2.
Sand
Ysat =?
G, = 2.70
n= 0.5
(a) What is the effective stress (kPa) at point A? (Ans: 43 kPa)
(b) What is the effective stress (kPa) at point B? (Ans: 82 kPa)
(c) Ten years from now, the depth of the groundwater table will
change, resulting in a new effective stress at point B of 72.6 kPa.
Based on this information, how far below the ground surface will
the new location of the groundwater table be? (Ans: 0 m; GWT is at
the ground surface)
A
Clay
Ysat =
19.6 kN/m
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