An embankment will be constructed from borrowed soil. The cross section of the embankment is shown in the picture below. the soil in the embankment has to compacted to a dry unit weight of 108 lb/ft^3 at the moisture content 14.5%. The borrowed soil is transported in 10 cubic yard truck loads. The borrowed soil has a void ratio of 1 1 Given the specific aravity of soil solids Gs

An embankment will be constructed from borrowed soil. The cross section of the embankment is shown in the picture below. the soil in the embankment has to compacted to a dry unit weight of 108 lb/ft^3 at the moisture content 14.5%. The borrowed soil is transported in 10 cubic yard truck loads. The borrowed soil has a void ratio of 1 1 Given the specific aravity of soil solids Gs

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 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
Subject Geotechnical engineering : soil mechanics A layer soil shown has the following data H1= 3m. K1= 2x10^-2 cm/sec H2= 4m K2= 3.2x10^-2 cm/sec H3= 6m K3= 4.1 x 10^ -2 cm/sec Compute the equivalent coefficient of permeability in vertical direction. Compute the velocity if h= 4m
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.
A 5-ft fill is to be placed over the following soil profile shown below. Determine if the clay is normally consolidated or over-consolidated. The pre-consolidation pressure (past maximum consolidation stress) of the clay is 1000 lb/ft3. 5 ft 2 ft 4 ft Proposed Fill, y = 120 lb/ft³ Sand Clay Rock 2 ft A Ydry = 100 lb/ft³ Ground water table Ysat 110 lb/ft³ = o'= Pc = 1000 lb/ft²
A sand-cone in place unit test was conducted on the field during the construction of a proposed embankment. The following data were obtained. moisture content=12.8% weight of sand to fill the funnel=320 g weight of wet soil from test hole=750 g unit weight of sand=15.4 kN/m3 weight of sand used to fill test hole and funnel of sand-cone device=870 g a) compute the wet unit weight of soil (Ans. 21.14 kN/m3) b) compute the dry unit weight of the compacted soil (Ans. 18.74 kN/m3) c) compute the relative compaction in the field if the maximum dry unit weight of the soil is 21.3 kN/m3. (Ans. 87.98%)
1 In order to restore a river embankment damaged by an earthquake, a soil of 50,000 m3 estimated after compaction was needed. From the laboratory tests of soil from the excavation site, the water content was w = 15%, and the void ratio was e = 0.60, and the specific gravity of soil was Gs =2.70. The soil was carried by truck to the construction site. The load capacity of the truck is 6.5 t. The construction of embankment was done by compacting after adding water so that the water content becomes 20%. The dry density of soil after compaction was 1.80 t/m3 . Answer the following questions. The density of water is 1.0 t/m3 . find the saturation Sr, the bulk density, and the dry density of soil at the excavation site. Find the total number of trucks needed for the construction. Find the total volume of soil excavated at the excavation site. Find the total volume of water added to obtain the prescribed water content. Assume that evaporation of water is negligible. The embankment is needed…
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.
The e-p curve for a soil is shown in the figure below. The coefficient of compressibility (in m2/kN) of the soils is 0.85 0.80 200 400 Pressure (kN/m) Void Ratio
Q2) For the soil profile shown below find kz and kx. 1.5m K=10° cm/sec K-2*10* cm/sec 2m K=10 cm/sec 1m K=2*10* cm/sec 1m
A soil formation is composed of 5 m thick clay and 5 m thick sand being the sand above the clay. The ground water table (GWT) is located at 2 m below the ground surface. 40 kPa 2 m Sand Ydry = 17.66 kN/m^3 VGWT Sand 3 m Y sat = 20.93 kN/m^3 LI = 64% PL = 20% w = 40% 5 m Clay eo = 0.60 G. = 2.60 1. Calculate the primary compression index. [ Select ] 2. Calculate the primary consolidation settlement of the normally consolidated clay layer if there is a surcharge of 40 kPa acting on the ground surface. [ Select] 3. Calculate the secondary settlement of the clay layer 5 years after the completion of the primary consolidation settlement. Time for completion of primary settlement is 2 years. Use C, = 0.02. [Select ]
Situation 3: 6. 7. 8. 9. 10. From the figure shown a soil formation with its corresponding soil properties and water table is located 2 m below the ground surface. To consolidate the ground, surcharge load at the top or dewatering are being considered. DRY SAND 2 m 4 m 18 m SAND CLAY Adry = 15.8 kN/m³ sat 19.1 kN/m³ Asat = 20.5 kN/m³ A decision has been made to consolidate the clay layer prior to site development by preloading with a sand layer 2.0 m thick. The sand fill will have a unit weight of 15 kN/m³. Find the increase in stress at the bottom of the clay layer. By dewatering 1.8 m, determine the stress increase at the bottom of the clay layer as water level is lowered down by 1.8 m. By how much should the water be lowered down to be more effective than the surcharge load? Determine the type of geosynthetic that serves as both drainage and filter material because it is composed of at least one geosynthetic product among the components combined with either another geosynthetic…