A cylindrical undisturbed sample of soil was taken from a borrow area and tested giving the following results: Dimensions of the sample: Diameter = 48mm, Length = 100mm Initial mass of the sample: m = 344gr Mass of the sample after drying: mj-296gr The soil from the borrow pit is to be used as compacted backfill in a 100m long trench having a width of 528mm and a depth of 1500mm. The soil is to be compacted into the trench at a total unit weight of 22.0kN/m³ and a moisture content of 11%. (a) Determine the volume of soll V₁ (in m³) that will need to be excavated from the borrow area in order V₁- Your last answer was interpreted as follows: (b) how much is the degree of saturation of the compacted materials? (in %) S,= Your last answer was interpreted as follows. provide sufficient soll for the compacted fill (Assume G, -2.65 and -9.8kN Open block drawer

A cylindrical undisturbed sample of soil was taken from a borrow area and tested giving the following results: Dimensions of the sample: Diameter = 48mm, Length = 100mm Initial mass of the sample: m = 344gr Mass of the sample after drying: mj-296gr The soil from the borrow pit is to be used as compacted backfill in a 100m long trench having a width of 528mm and a depth of 1500mm. The soil is to be compacted into the trench at a total unit weight of 22.0kN/m³ and a moisture content of 11%. (a) Determine the volume of soll V₁ (in m³) that will need to be excavated from the borrow area in order V₁- Your last answer was interpreted as follows: (b) how much is the degree of saturation of the compacted materials? (in %) S,= Your last answer was interpreted as follows. provide sufficient soll for the compacted fill (Assume G, -2.65 and -9.8kN Open block drawer

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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An undisturbed sample of soil obtained from field weighed 18 N with a volume of 10-3 m3. The dry unit weight of the undisturbed sample is 13 kN/m3. Assume specific gravity of the soil sample as 2.70. Then, Water content of the soil sample is 38.5%. Correct Option B The void ratio of the soil sample is 0.382. C The saturated unit weight of the sample is 20.23 kN/m3. D The saturated unit weight of the sample is 18 kN/m³. Correct Option
The laboratory compaction test of a certain type of soil gives a maximum dry density of 1.486 g/cm3 with an optimum moisture content of 12.5%. The following are the results of a field unit weight determination test using sand cone method. Volume of the soil excavated from the hole = 0.001337 m3 Weight of soil from the hole when wet = 2220 g Weight of soil when dry = 1890 g What is the in situ water content of the soil? O 17.46% O 19.21% O 15.55% O 14.12%
The following data has been obtained from a standard Proctor test conducted on a silty clay soil. The maximum dry unit weight = 17.5 kN/m³; Optimum water content = 12.5% The construction specifications require a relative compaction of 95% and field compaction water content to be within ±2% if the optimum. A sand cone test was performed to measure the dry unit weight and water content achieved during the field compaction operation. The volume of the test hole has been already been calculated from the sand cone data Volume of test hole = 1.5x10-3 m³. Total weight of moist soil removed from hole = 2.73 kg %3D Weight of soil removed from hole after drying = 2.46 kg Use conversion 1.0kg = 0.01 KN Determine the following: %3D a. Field water content (%) = Report to ONE decimal (Show work in hand-calc sheet) b. Has the compaction specifications met with respect to compaction water content? Say YES or NO c. Field dry unit weight (kN/m3) = Report to ONE decimal (Show work in hand-calc sheet) d.…
Question 1 (a) Based on your understanding, briefly elaborate the different between residual soil and transported soil. (b) An undisturbed cylindrical soil sample is 0.060 m in diameter and 0.155 m long. It has a total mass of 0.82 kg. The specific gravity of the soil is 2.7. After finding the mass of the entire sample, a small portion was removed and a moisture content test was performed on the sample. The results of this moisture content test on the subsample were mass of moist soil = 102.96 g and mass of dry soil = 90.71 g. Determine the following: Moisture content i. Wet unit weight Void ratio ii. ii. (c) A series of laboratory compaction test performed using the Standard Proctor Test procedure, the moisture content tests were further performed by taking out small portions of compacted soil and the result obtained are as shown in Table Q1 (c): Table Q1 (c) Volume of Proctor Mass of compacted Mass wet soil sample (g) Mass dry soil sample mold (m) soil (g) (g) 0.00095 1704 183.64…
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An in-situ density test on a 542.5 cm³ soil sample was conducted. The total weight of the sample at the site was 801.3 gr. Soil samples of the test were collected and moisture content was determined to be 4.5%. Assuming G, = 2.71 determine: (a) The in-situ unit weight of the soil in kN/m³. (b) The void ratio of the soil. (c) The porosity of the soil. (d) The degree of saturation.
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Sand cone equipment is used to perform a field density on compacted earth fill. Sand is used in the cone and is known to have a bulk density of 15 kN/m3. The wet weight of soil sample from the test hole is 20.601 N. The dry weight of soil sample is 17.926 N. The weight of the sand in the sand cone to fill the test hole is 16.053 N. Determine the in-place dry density in kN/m3 of the tested soil.
A modified Proctor compaction test was carried out using a cylindrical moldwith a 1000 ml volume. Table 2 summarizes the results.a. Plot the compaction and ZAV curves (RD=2.75 and ρwater=1000 kg/m3).b. Determine the maximum dry density and the optimum moisture content.
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A field sand cone test is performed on a layer of compacted fill. determined that the fill soil has a maximum dry unit weight of approximately 120 pcf. Determine the relative compaction of the compacted fill. Unit weight of dry uniform of sand: 95 pcf Weight of sand to fill the cone: 1.10 lb weight of jar + cone + sand (before test): 16.5 lb Weight of jar + cone + sand (after test): 10.5 lb Weight of moist soil excavated from hole: 6.60 lb Moisture content of soil from hole: 10 %
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