1. A wet sand sample has a volume of 4.64 x 10⁻⁴ and weighs 8N. After oven drying, the weight reduces to 7.5N. Calculate the water content, void ratio and degree of saturation.(use Gs = 2.7) 2. A contractor has compacted the base course for a new road and found that the mean value of the test sample shows, w = 14.6%, Gs =2.81, and γ= 18.2 KN/m³. The specification require that e ≤0.8. has the contractor complied with the specifications? 3. The moist unit weight of soil is 16.5 KN/m³. Given that the w=15% and Gs = 2.70. Find: 1) dry unit weight 2) porosity 3) degree of saturation
1. A wet sand sample has a volume of 4.64 x 10⁻⁴ and weighs 8N. After oven drying, the weight reduces to 7.5N. Calculate the water content, void ratio and degree of saturation.(use Gs = 2.7) 2. A contractor has compacted the base course for a new road and found that the mean value of the test sample shows, w = 14.6%, Gs =2.81, and γ= 18.2 KN/m³. The specification require that e ≤0.8. has the contractor complied with the specifications? 3. The moist unit weight of soil is 16.5 KN/m³. Given that the w=15% and Gs = 2.70. Find: 1) dry unit weight 2) porosity 3) degree of saturation
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
1. A wet sand sample has a volume of 4.64 x 10⁻⁴ and weighs 8N. After oven drying, the weight
reduces to 7.5N. Calculate the water content, void ratio and degree of saturation.(use Gs = 2.7)
2. A contractor has compacted the base course for a new road and found that the mean value of
the test sample shows, w = 14.6%, Gs =2.81, and γ= 18.2 KN/m³. The specification require that
e ≤0.8. has the contractor complied with the specifications?
3. The moist unit weight of soil is 16.5 KN/m³. Given that the w=15% and Gs = 2.70. Find:
1) dry unit weight
2) porosity
3) degree of saturation
Transcribed Image Text:Specific Gravity
Is defined as the ratio of the unit weight of a given material to the unit weight of water
Y
yw
Type of Soil
Sand
Silty sand
Inorganic clay
Gs =
Soils with mica or iron
Organic soils
Gs
2.65 -2.67
2.67 -2.70
2.70 2.80
2.75 -3.00
< 2.00
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