Q2/ For proposed Earth Dam fill, the soil will be compact to (95%) of standard proctor dry density. The test of borrow area indicate that (ydmax. = 18 kN/m²) at optimum moisture content (11%). The soil of borrow area at natural condition has (e = 0.65) and (Gs = 2.68). Determine the minimum volume ofborrow required to make (600,000 m³ ) of acceptable compacted fill.

Q2/ For proposed Earth Dam fill, the soil will be compact to (95%) of standard proctor dry density. The test of borrow area indicate that (ydmax. = 18 kN/m²) at optimum moisture content (11%). The soil of borrow area at natural condition has (e = 0.65) and (Gs = 2.68). Determine the minimum volume ofborrow required to make (600,000 m³ ) of acceptable compacted fill.

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 16.3P

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Q2/ For proposed Earth Dam fill, the soil will be compact to (95%) of standard proctor dry density. The test of borrow area indicate that (ydmax = 18 kN/m3) at optimum moisture content (11%). The soil of borrow area at natural condition has (e = 0.65) and (Gs = 2.68). Determine the minimum volume ofborrowrequired to make (600,000 m3 ) of acceptable compacted fill.
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.
Specifications for a proposed earth fill require that soil be compacted 95% of standard proctor dry density. Tests on a glacial-till borrow material indicate that the maximum unit weight is 124 lb/ft3 at an optimum water content of 12%. The borrow material in its natural condition has e=0.6. If Gs=2.65 a) determine the dry unit weight of soil in the embankment. (Ans.117.8 lb/ft3) b) determine the dry unit weight in the borrow area. (Ans. 103.52 lb/ft3) c) Determine the minimum volume of borrow required to make 1 ft3 of acceptable compacted fill. (Ans. 1.14 ft3)
Your company has won a contract to provide and compact the fill material for an earth levee, with the dimensions shown below. The levee fill is a silty clay soil to be compacted to at least 95% of maximum Standard Proctor of ya = 106 pcf at an OMC of 18%. Your borrow pit has a silty clay with an in-situ moist density of 112.1 pcf at 18%, and a G, = 2.68. When the soil is excavated and loaded on to your trucks, the voids ratio of the material is e = 1.47. Your trucks can haul 15 cubic yards of material per trip. (26) Determine the volume of fill required for the levee; (27) Determine the volume required from the borrow pit; (28) Determine the required number of truckloads. 40* 20 -20 20 450 60' 3:1
4. Specifications require that a fill using borrow soil to be compacted at 95% of its standard proctor maximum dry density. Tests indicate that this maxi-mum is 19.5 kilo Newtons per cubic meter with 12 % moisture. The borrow material has a void ratio of 0.60. Compute the minimum dry and wet unit weight of the compacted soil, compute also the minimum volume of borrow material required to fill 1 cubic meter when compacted.
Specifications require that a fill using borrow soil to be compacted at 95% of its standard proctor maximum dry density. Tests indicate that this maxi-mum is 19.5 kilo Newtons per cubic meter with 12 % moisture. The borrow material has a void ratio of 0.60. Compute the minimum dry and wet unit weight of the compacted soil, compute also the minimum volume of borrow material required to fill 1 cubic meter when compacted. Assume a logical value of Gs with at least 4 significant figures.
These equations can be applied for dry soil, except: a) Sre = wGs b) Gspw /1+ e c) Ms / V d) Pp/1 + w
Problem # 4. Specifications for a proposed earth fill require that the soil be compacted to 95% of Standard proctor dry density. Test on glacial till borrow material indicates Ymax= 19.51 kN/m³ at an optimum water content of 12%. The borrow material in its natural condition has a void ratio of 060. If the sp. Gr. Is 2.65 a. Compute the void ratio of the soil. b. Compute the volume of the solids. Compute the maximum volume of the borrow required to make one cu.m. of acceptable compacted fill. C.
Subj: Soil Mechanics Specifications for a proposed earth fill require that a soil be compacted to 95% of Standard Proctor dry density. Tests on borrow material indicate maximum dry density equal to 124 lb/cu ft. at a optimum moisture content of 12% The borrow material in its natural condition has a void ratio of 0.60. Gs=2.65. Determine the relative compaction. a. 87.87% b. 83.48% c. 95.00% d. 92.76%
Q5-A proposed earth dam requires 7500 m³ of compacted soil with relative density of 94%, maximum void ratio of 0.73, minimum void ratio of 0.4 and specific gravity (Gs)= 2.67. Two borrow pits are available as described in the following table. Choose the best borrow pit with a minimum cost. Borrow Pit A B Degree of saturation % 82 100 Moisture content % 18.43 24.34 Cost ($/m³) 10 5
QUIZ 3 1. A sample of clay has a water content of 40 percent at full saturation. Its shnnkage limit is 15 percent. Assuming Gs = 2.70, determine its degree of shrinkage. Comment on the quality of the soil.
1. Classify the following soils using USCS givegroup symbol and group name.a) A 55% of soil sample retained in sieve no. 4and 89% retained on sieve no. 200. The soilsample has a liquid limit = 28% and plasticLimit = 18% Cu = 4.2, Cc = 1.4 2. A saturated soil has the followingcharacteristics:Initial Volume = 25 cm3Final Volume = 16 cm3Mass of wet soil = 45 gMass of dry soil = 31 ga) Determine the Shrinkage Limitb) Determine the Shrinkage Ratioc) Determine the Specific Gravity of the soil