QUESTION 1: PHASE RELATIONS a. The bulk unit weight and water content of a soil at a borrow pit are 17.2 kN/ml and 8.2% respectively. A highway fill is being constructed using the soil from this borrow at a dry unit weight of 18.05 kN/m³. Find the volume of the borrow pit that would make one cubic meter of the finished highway fill. b. A soil to be used in the construction of an embankment is obtained by hydraulic dredging of a nearby canal. The embankment is to be: placed at a dry density of 1.72 t/m³ and will have a finished volume of 20,000 m³. The in situ saturated density of the soil at the bottom of the canal is 1.64 t/m³. The effluent from the dredging operation, having a density of 1.43 t/m³, is pumped to the embankment site at the rate of 600 L per minute. The specific gravity of the soil grains is 2.70. i. ii. How many operational hours would be required to dredge sufficient soil for the embankment? what would be the volume of the excavation at the bottom of the canal? c. A soil mass in its natural state is partially saturated having a water content of 17.5% and a void ratio of 0.87. Determine the degree of saturation, total unit weight, and dry unit weight. What is the weight of water required to saturate a mass of 10 m3 volume? Assume G = 2.69.
QUESTION 1: PHASE RELATIONS a. The bulk unit weight and water content of a soil at a borrow pit are 17.2 kN/ml and 8.2% respectively. A highway fill is being constructed using the soil from this borrow at a dry unit weight of 18.05 kN/m³. Find the volume of the borrow pit that would make one cubic meter of the finished highway fill. b. A soil to be used in the construction of an embankment is obtained by hydraulic dredging of a nearby canal. The embankment is to be: placed at a dry density of 1.72 t/m³ and will have a finished volume of 20,000 m³. The in situ saturated density of the soil at the bottom of the canal is 1.64 t/m³. The effluent from the dredging operation, having a density of 1.43 t/m³, is pumped to the embankment site at the rate of 600 L per minute. The specific gravity of the soil grains is 2.70. i. ii. How many operational hours would be required to dredge sufficient soil for the embankment? what would be the volume of the excavation at the bottom of the canal? c. A soil mass in its natural state is partially saturated having a water content of 17.5% and a void ratio of 0.87. Determine the degree of saturation, total unit weight, and dry unit weight. What is the weight of water required to saturate a mass of 10 m3 volume? Assume G = 2.69.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:QUESTION 1: PHASE RELATIONS
a. The bulk unit weight and water content of a soil at a borrow pit are 17.2 kN/ml and
8.2% respectively. A highway fill is being constructed using the soil from this borrow
at a dry unit weight of 18.05 kN/m³. Find the volume of the borrow pit that would make
one cubic meter of the finished highway fill.
b. A soil to be used in the construction of an embankment is obtained by hydraulic
dredging of a nearby canal. The embankment is to be: placed at a dry density of 1.72
t/m³ and will have a finished volume of 20,000 m³. The in situ saturated density of the
soil at the bottom of the canal is 1.64 t/m³. The effluent from the dredging operation,
having a density of 1.43 t/m³, is pumped to the embankment site at the rate of 600 L per
minute. The specific gravity of the soil grains is 2.70.
i.
ii.
How many operational hours would be required to dredge sufficient soil for the
embankment?
what would be the volume of the excavation at the bottom of the canal?
c. A soil mass in its natural state is partially saturated having a water content of 17.5%
and a void ratio of 0.87. Determine the degree of saturation, total unit weight, and dry
unit weight. What is the weight of water required to saturate a mass of 10 m3 volume?
Assume G = 2.69.
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