A soil formation is composed of 5m thick clay and 5m thick sand being sand above the clay. The groundwater table is located at 2m below the ground surface, assume E=6900kPa, If=0.79 and µ=0.2 a. A rigid column footing 1.2m in diameter is constructed. The load on the footings is 170kN. Determine the immediate settlement in mm. b. Calculate the primary compression index. c. Calculate the primary consolidation settlement of the normally consolidated clay layer if there is a surcharge of 40kpa acting on the ground surface. (neglect footings load) in mm.
A soil formation is composed of 5m thick clay and 5m thick sand being sand above the clay. The groundwater table is located at 2m below the ground surface, assume E=6900kPa, If=0.79 and µ=0.2 a. A rigid column footing 1.2m in diameter is constructed. The load on the footings is 170kN. Determine the immediate settlement in mm. b. Calculate the primary compression index. c. Calculate the primary consolidation settlement of the normally consolidated clay layer if there is a surcharge of 40kpa acting on the ground surface. (neglect footings load) in mm.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A soil formation is composed of 5m thick clay and 5m thick sand being sand above the clay. The groundwater table is located at 2m below the ground surface, assume E=6900kPa, If=0.79 and µ=0.2
a. A rigid column footing 1.2m in diameter is constructed. The load on the footings is 170kN. Determine the immediate settlement in mm.
b. Calculate the primary compression index.
c. Calculate the primary consolidation settlement of the normally consolidated clay layer if there is a surcharge of 40kpa acting on the ground surface. (neglect footings load) in mm.
Transcribed Image Text:40 kPa
Yary = 17.66 kN/m^3
2 m Sand
VGWT
Sand
Yeat = 20.93 kN/m*3
%3D
3 m
U= 64%
8o = 0.60 PL 20%
Ga 2.80 w=40%
5 m Clay
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