1 For the square foundation below determine: a) ultimate settlement and b) settlement after 140 days due to consolidation of the clay layer. Base your calculations on the values at the midpoint of the layer. 8 ft 12 ft 8 ft 16 ft q=2200 psf SAND (COARSE) Yo 110 pcf W-0.08 G₁= 2.65 ROCK e=0.6 CLAY (NORM.CONSOL.) c, = 0.15 ft/day C₂ = 0.42 @p=1.2 G₁ =2.57 a) Sult = D.126 ft 5140 = 0.087 ft 2. Assume that the moist unit weight of sand in Problem 1 to be 122 lb/ft, the saturated unit weight of sand 130 and clay 120 lb/ft'. What should be the thickness of a soil layer of a unit weight of 120 lb/ft' that would cause consolidation settlement of 0.1 ft in 100 days? H = 4.8 ft

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Chapter8: Mat Foundations
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PLEASE ONLY SOLVE PROBLEM 2, Please only solve problem 2 with clear step by step calculations and solutions. I want to understand the theory and concept behind it so please help me 

1. For the square foundation below determine: a) ultimate settlement and b) settlement after 140
days due to consolidation of the clay layer. Base your calculations on the values at the midpoint of
the layer.
8 ft
12 ft
8 ft
16 ft
SAND (COARSE)
Y 110 pcf
G₁= 2.65
q=2200 psf
ROCK
w=0.08
e=0.6
CLAY (NORM.CONSOL.)
c,= 0.15 ft/day
C = 0.42
eo=1.2
G₂ =2.57
a) Sult = D.126 ft
S140 =0,089 ft
2. Assume that the moist unit weight of sand in Problem 1 to be 122 lb/ft', the saturated unit
weight of sand 130 and clay 120 lb/ft'. What should be the thickness of a soil layer of a unit weight
of 120 lb/ft' that would cause consolidation settlement of 0.1 ft in 100 days?
H = 4.8 ft
Transcribed Image Text:1. For the square foundation below determine: a) ultimate settlement and b) settlement after 140 days due to consolidation of the clay layer. Base your calculations on the values at the midpoint of the layer. 8 ft 12 ft 8 ft 16 ft SAND (COARSE) Y 110 pcf G₁= 2.65 q=2200 psf ROCK w=0.08 e=0.6 CLAY (NORM.CONSOL.) c,= 0.15 ft/day C = 0.42 eo=1.2 G₂ =2.57 a) Sult = D.126 ft S140 =0,089 ft 2. Assume that the moist unit weight of sand in Problem 1 to be 122 lb/ft', the saturated unit weight of sand 130 and clay 120 lb/ft'. What should be the thickness of a soil layer of a unit weight of 120 lb/ft' that would cause consolidation settlement of 0.1 ft in 100 days? H = 4.8 ft
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