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?

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?

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter2: Geotechnical Properties Of Soil

Section: Chapter Questions

Problem 2.4P

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The excavated material has a wet unit weight of 1,510 kg/ cu metre and a dry unit weight of 1,398 cu metre. The material will be used to build an embankment. According to specification, the dry unit weight of the compacted material should be 1,826 kg/ cu metre, with a water content of 12%. The net section of the embankment is 86,000 cu metre. What is the moisture content of the excavated soil? How many cu metre of excavation will be required to construct the embankment? Do we need to add water or not? If yes, what’s the volume of added water?
Earth is required to be excavated from the borrow pits for building embankment as shown in the figure. The moisture unit weight of the borrow pits is 18 kN/m3 and its water content is 8%. Estimate the quantity of earth required to be excavated per meter length of embankment. The dry unit weight required for the embankment is 15 kN/m3 with a moisture content of 10%. Assume the specific gravity of the solids as 2.67. Also determine the degree of saturation of the embankment and volume of the water in the embankment 2m- Embankment 4 m
in an earthen embankment under construction the bulk unit weight is 16.5 kN/m³ at water content of 11%. If the water content is to be raised to 15%, compute the quantity of water required to be added per cubic meter of soil? Assume no change in the void ratio.
Your company has won a contract to provide and compact the fill material for an earth levee (an embankment built to prevent overflow of a river), with the dimensions shown below. The levee fill is a silty clay soil to be compacted to atleast 95.1% of maximum standard Proctor of dry unit weight= 109lb/cu.ft at an OMC of 18.6%. Your borrow pit has a silty clay with an in-situ moist density of 112.6lb/cu.ft at 18.1% water content and a Gs = 2.679. When the soil is excavated and loaded on to your trucks, the void ratio of the material is e = 1.46. Your trucks can haul 401 cu.ft of material per trip. DETERMINE THE FF AND SHOW COMPELETE SOLUTION. ALL FINAL ANSWER WILL BE IN 3 DECIMAL PLACES. 1. Determine the volume of fill required for the levee in cu.ft 2. Determine the volume required from the borrow pit in cu.ft 3. Determine the required number of truck loads.
Qs. A 1 m thick layer of saturated clay, drained at both faces, settles by 10 cm in one year. If a thin layer of pervious soil is introduced in the middle of this layer, then what will be the period during which the settlement to 10 cm. will be compacted? (a) 2 years (c) 0.25 years (b) 0.75 years (d) 3 years
A soil deposit to be used for construction of an earth embankment has an average dry density of 1620 kg/m³. If the compacted embankment is to have an average dry density of 1720 kg/m³ determine the volume of soil to be excavated for 1000 cu.m. of embankment. The water content of the soil in the borrow pit is 10%.
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
SITUATION 4: As soil profile shown below. The sand above the ground water table is dry. Other data pertaining to the table as follows: H₁ 4m, H₂= 3.2m, H₂ = 1m
For a given soil, derive the following relation by drawing the three-phase diagram: Y: = Gs yw (1 - n) (1 + w)
A stratum of soil consists of three layers of equal thickness. The permeability of top, middle and bottom layers are k 1= 10^-4* cm /sec, k_{2} = 2 * 10^-4 cm/sec, k_{3} = 1.5 * 10^-4 cm/sec. Then the value of average k flow perpendicular to the bedding plane is?
In the soil profile shown below, the clay is normally consolidated and H,=9m, H2=5m, H3=3m. The depth of water table is then decreased so that H;=2m, H2=12m, H3=3m. a) Calculate the overconsolidation ratio (OCR) at this stage. When a surcharge of Ao = 180 kPa applied to the surface. b) Estimate the primary consolidation settlement of the clay layer. c) Estimate the degree of consolidation will be after 40 days? d) How many days would it take for 90% consolidation? Soil characteristics are as follows (use appropriate relations from the Appendix, 9.81 kN/m³): Yw = Sand: e = 0.56; G, = 2.6 Clay: LL = 63; e = 0.83; G, = 2.77; C, = - Cc; Cy = 6.66 × 10-4cm² /s %3D Ao H1 Sand Groundwater table Sand H2 Clay. Void ratio = e H3 Normally consolidated Sand
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.