An embankment for a highway 30 m wide and 1.5 m in compacted thickness is to be constructed from sandy soil trucked from a borrow pit. The water content of the sandy soil in a borrow pit is 15% and its void ratio is 0.69. The swell index is 1.2. The specification requires the embankment to be compacted to a dry unit weight of 18kN/m^3. Determine, for a 1-km length of embankment, the ff; (g) The weight of water per truckload of sandy soil. (h) The degree of saturation of the sandy soil in situ. The dry density of sand with a porosity of 0.387 is 1600 kg/

An embankment for a highway 30 m wide and 1.5 m in compacted thickness is to be constructed from sandy soil trucked from a borrow pit. The water content of the sandy soil in a borrow pit is 15% and its void ratio is 0.69. The swell index is 1.2. The specification requires the embankment to be compacted to a dry unit weight of 18kN/m^3. Determine, for a 1-km length of embankment, the ff; (g) The weight of water per truckload of sandy soil. (h) The degree of saturation of the sandy soil in situ. The dry density of sand with a porosity of 0.387 is 1600 kg/

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter3: Weight–volume Relationships

Section: Chapter Questions

Problem 3.24P

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An embankment for a highway 30 m wide and 1.5 m in compacted thickness is to be constructed from sandy soil trucked from a borrow pit. The water content of the sandy soil in a borrow pit is 15% and its void ratio is 0.69. The swell index is 1.2. The specification requires the embankment to be compacted to a dry unit weight of 18kN/m^3. Determine, for a 1-km length of embankment, the ff; (a) Dry unit weight of borrow pit material.(b) Volume of the finished embankment.(c) Volume of borrow pit soil required.
An embankment for a highway 30 m wide and 1.5 m in compacted thickness is to be constructed from sandy soil trucked from a borrow pit. The water content of the sandy soil in a borrow pit is 15% and its void ratio is 0.69. The swell index is 1.2. The specification requires the embankment to be compacted to a dry unit weight of 18kN/m^3. Determine, for a 1-km length of embankment, the ff;(d) Volume of the borrow pit material required considering swell. (e) The number of truckloads of sandy soil required for the construction. The full capacity of each truck is 22.2m3, and local government regulations require a maximum capacity of 90%. (f) The weight of dry soil in one truckload.
An embankment for a highway 35 m long and 1.6 m in compacted thickness is to be constructed from a sandy soil trucked from a borrow pit. The water content of the sandy soil in the borrow pit is 15% and its void ratio is 0.69. The specification requires the embankment to be compacted to a dry unit weight of 18 KN/m³, specific gravity of soil is 2.7. For a one-kilometer length of embankment, compute: a) Volume of the borrow pit soil required to construct the embankment| b) Determine the weight of water per truck load of sandy soil, if the capacity of a one truck load is 10 m3.
The embankment for a highway 5097 ft long, 104 ft wide and 6 ft in compacted thickness is to be constructed from a sandy soil trucked from a borrow pit. The water content of the sandy soil in the borrow pit is 6.748% and its porosity is 0.422. The specification requires the embankment be compacted to a dry unit weight of 122.874 lb/ft3. The specific gravity is 2.588. Determine the following: a. Total weight of the soil solids, kips. b. Total volume of the soil required from the borrow pit, ft3. c. Weight of water to be added per foot length of the embankment to reach 10% moisture content, lb.
The embankment for a highway 5097 ft long, 104 ft wide and 6 ft in compacted thickness is to be constructed from a sandy soil trucked from a borrow pit. The water content of the sandy soil in the borrow pit is 6.748% and its porosity is 0.422. The specification requires the embankment be compacted to a dry unit weight of 122.874 lb/ft3. The specific gravity is 2.588. Determine the following: a. Total weight of the soil solids, kips. b. Total volume of the soil required from the borrow pit, ft3. c. Weight of water to be added per foot length of the embankment to reach 10% moisture content, lb.Round off answers to three decimal places.
5. An embankment for a highway will be constructed from a soil. To construct the embankment, the total weight of the soil from the borrow pit is 500000 kN. The water content of the soil in the borrow area of 14% and the bulk unit weight is 16 kN/m³. The soil in the embankment will be compacted to a dry unit weight of 17.5 kN/m³. The specific gravity of the sandy soil is 2.67. (a) Determine the volume and weight of the soil in the embankment. (b) If the soil in the embankment becomes saturated after construction, what is the new water content of the soil?
An embankment for a highway is to be constructed from a soil compacted to a dry unit weight of 18kN/m3. The clay has to be trucked to the site from a borrow pit. The bulk unit weight of the soil in the borrow pit is 17kN/m3 and its natural water content is 12.3%. Calculate the volume of clay from the borrow pit required for 1m3 of embankment. Assume G=2.7.
4. An embankment for a highway will be constructed from a soil. The total volume of the embankment is 20,000 m³. The soil in the embankment will be compacted to a dry unit weight of 18 kN/m³. The sandy soil will be obtained from a borrow pit. The water content of the soil in the borrow area of 16% and the bulk unit weight is 17.5 kN/m³. The specific gravity of the sandy soil is 2.7. (a) Determine the volume and weight of the soil from the borrow pit required to construct the embankment. (b) If the soil in the embankment becomes saturated after construction, what is the new water content of the soil?
An embankment will be constructed from borrowed Soil. The cross section of the embankment is shown in Exhibit 10.10. The soil in the embankment has to be compacted to a dry unit weight of 108 lb/ft³ at a moisture content of 14.5%. The borrowed soil will be brought in 10 cubic-yard truck loads. The borrowed Soil has a void ratio of 1.1. Given: specific gravity Of Soil Solids, Gs=2.68. The volume of excavation needed at the borrow site for construction of each 100' length of embankment is most nearly: 1 a) 4144 yd ³ b) 5260 yd3 c) 3550 yd3 d) 4890 yd³ 25ft 15ft Exhibit 10.10
2. An embankment for a highway is to be constructed from a soil placed to a dry unit weight of 18 kN/m3.The clay has to be transported to the site from borrow pit. The bulk unit weight of the soil in the borrowpit is 17 kN/m3and its natural moisture content is 5%. Calculate the volume of clay from the borrow pitrequired for 100 cubic meter of embankment. Assume specific gravity of soil solids = 2.65. This is the question of Soil Mechanics.
Problem 2: An embankment has a mas density of 1750 kg/m^3. Laboratory tests shows that the soil has a dry density of 1630 kg/m^3and the void ratio at its loosest and densest states were 0.72 and 0.65, respectively. The specific gravity of soil particles is 2.72. 1. Determine the moisture content of the embankment. 2. Determine the effective density of the embankment in kg/m^3. 3. Determine the qualitative description of soil based on relative density of the embankment.
An embankment has a mass density of 1900 kg/m3. Laboratory test shows that the soil has a dry density of 1550 kg/m3 and the void ratio at its loosest and densest states were 0.85 and 0.42, respectively. The specific gravity of soil particles is 2.66. a. Determine the relative density of the embankment. b. Determine the moisture content of the embankment.