Problem 6. In a construction project, the excavated material has a dry unit weight (Ya) of 90 pcf and water content (o) of 12%. The embankment will be compacted to unit weight (y) of 110 pcf and water content (0) of 8%. The net section of the embankment is 100,000 cy. a) How many cubic yards of excavation will be required to construct the embankment? b) Determine the water requirements, if a water truck be needed on the job or will it be necessary to dry the material?

Problem 6. In a construction project, the excavated material has a dry unit weight (Ya) of 90 pcf and water content (o) of 12%. The embankment will be compacted to unit weight (y) of 110 pcf and water content (0) of 8%. The net section of the embankment is 100,000 cy. a) How many cubic yards of excavation will be required to construct the embankment? b) Determine the water requirements, if a water truck be needed on the job or will it be necessary to dry the material?

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter16: Soil Improvement And Ground Modification

Section: Chapter Questions

Problem 16.12P

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The soil borrow material to be used to construct a highway embankment has a wet unit weight of 15.4 kN m3 ⁄ , a water content of 9%, and the specific gravity of the soil solids is 2.67. The specifications require that the soil be placed in the fill so that the dry unit weight is 17.9 kN m3 ⁄ and the water content be held to 20%.a. How many cubic meters of borrow are required to construct an embankment having a 612, 000-m3 net section volume?b. How many gallons of water must be added per cubic meter of borrow material assuming no loss by evaporation?c. If the compacted fill becomes saturated at constant volume, what will be the water content and unit weight?
The soil borrow material to be used to construct a highway embankment has a wet unit weight of 15.4 kN/m³, a water content of 9%, and the specific gravity of the soil solids is 2.67. The specifications require that the soil be placed in the fill so that the dry unit weight is 17.9 kN/m³ and the water content be held to 20%. a. How many cubic meters of borrow are required to construct an embankment having a 612, 000-m³ net section volume? b. How many gallons of water must be added per cubic meter of borrow material assuming no loss by evaporation? C. If the compacted fill becomes saturated at constant volume, what will be the water content and unit weight?
A proposed embankment fill requires 5000 m² of compacted soil. The specification requires dry unit weight of 18 kN/m, the specific gravity of soil is 2.70. Four borrow pits are available, as described in the following table, which lists the properties of the soil and the cost per m for moving the soil to the proposed construction site. Assume the specific gravity of the soil is 2.70 in each borrow pit. Borrow Pit Unit Weight (kN/m³) Moisture Content (%) Cost (Pesos/m') A 15.8922 11 855 B 13.2435 15 645 17.658 20 765 20.3067 15 945 13. Which of the following borrow pit will give the lowest cost for the embankment (indicate the amount)? Example Format: A -5 000 000
For constructing an embankment, the soil is transported from a borrow area using a truck which can carry 6m³ of soil at a time. The details are as follows. Borrow Truck Field Property area (loose) (compacted) Bulk density 1.66 1.15 1.82oile (g/cc) Water 8 14 content (%) The quantity of soil to be excavated from the borrow pit, in m3 for a compacted earth fill of 100 m3 is
WA road section is 1200 m long. The cut and fill areas are to be computed between the station as shown in table below, determine the net volume of cut and fill between the stations, if you know that the material in fill will be consolidate by 12 percent after compaction. Given 100 m between each station. Station 0+00 2+00 4+00 6+00 8+00 10+00 12+00 1.0 5.0 Cut Fill 4.0 2.6 7.0 2.0 9.5 0.5 2.0 End Area (m2) 3.0 8.0 6.0
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.
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.
3. An embankment with a total volume of 30,000m3 is to be constructed as part of a highway project. The soil to be used in the embankment will come from a borrow pit where the average moist unit weight and water content of the soil is 17.6kN/m3 and 13% respectively. Assuming that the soil will be compacted to a dry unit weight of 18.2kN/m3 at a moisture content of 16%. a. Compute the weight of dry soil required. b. Compute the volume of borrow required. c. Compute the total quantity of water in cubic meters that must be added to the fill during compaction to bring about a desired final moisture content of 16%.
A road embankment needs 130,000 cu.m. to be completed. DPWH requires 96% compaction and the contractor is to provide soil from a borrow site. The optimum moisture content is 17% and the maximum dry density is 19.20 kN/m³. How many truckloads of borrow material are needed if the soil would have a specific gravity 2.6 and void ratio of 0.70 and the capacity of each truck is 9 cubic meter. O 15,667 O 17,746 O 18,598 O 17,854
Problem 2: The above borrow pit soil has a natural bulk unit weight of 17.5 kN/m² and water content of 8.5%. An embankment is to be constructed using this soil and the specification require the fill to be compacted to 96% of the above proctor compaction. Determine the cost for 50,000 m³ of the embankment considering the following: a) The distance between the borrow pit and the embankment is 55 km b) The cost of transporting 1 m³ of the borrow pit soil to the site is 16 OMR/km. c) The cost of compaction is 8 OMR/m³.
a. Compute the value of x b. Compute the area in the fill c. Compute thr area in cut
An earth dam require a total of 150 cubic meter of soil compacted with a bulk unit weight of 18.5KN/m^3 and moisture content of 10%, the specific gravity of solid particles is 2.55. Choose two out of the three borrow pits, if borrow pit 3 is automatically one of the choice. Choose the most economical choice.