Given in the following table is the result of the standard proctor test:Dry Unit Weight(KN/m³)16.79Test no.Water Content(%)5.75128.6019.20313.719.28416.816.99521.315.50Then followed by a sand cone test has been performed in a compacted fill which hasthe following data:Initial mass of sand cone apparatus with sand = 5.915 kgFinal mass of sand cone apparatus with sand = 2.380 kgMass of soil removed from hole = 2.883 kgMoisture content of soil from hole = 7%Density of sand =1300 kg/m³Volume of sand cone below valve = 0.001114 m³a) Using compaction curve, plot the water content versus the dry unit weight todetermine the maximum dry unit weight and the optimum moisture contentb) Determine the field dry unit weight in KN/m³c) Determine the relative compaction and rate its quality

Given, Water content (%) Dry Unit Weight (KN/m3) 5.75 16.79 8.60 19.20 13.7 19.28 16.8…

Answered: Test no. Water Content Dry Unit Weight…

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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For a laboratory consolidation test on a clay specimen (drained on both sides) the following results were obtained: Thickness of clay soil= 25 mm; P_1 = 50 kPa; P_2 = 120 kPa; e_1 = 0.92; e_2 = 0.78; Time for 50% consolidation= 2.5 min. Tv = 0.197. Determine the coefficient of consolidation in m2/m. Show free body diagram a.1.081 x 10^-3 b.1.23 x10 ^-5 c.1.31 x 10^-7 d.2.56 x 10^-2
A series of direct shear tests has been performed on a dense well-graded sand. All tests were performed on 3.00-in. diameter, 1.25 in. tall cylindrical samples, and were run slowly enough to produce drained conditions. The results of these tests are summarized in the following table: Test Number Normal Load (lb) Shear Load at Failure (lb) 1 100 84 2 200 159 3 400 319 Assuming the shear area remains constant during the test, determine the effective cohesion and effective friction angle from these test results. What values of these parameters would you expect? Are the test results consistent with your expectations? What values would you use for design?
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.
8 The following are results of a field unit weight determination test using sand cone method: Volume of hole = 0.0019 m3 Mass of moist soil from hole = 3.24 kg Water content = 12.01% Max. dry unit weight from a laboratory compaction test = 19.70 kN/m3 Determine the relative compaction, in percent. Round off to two decimal places. Hint: Relative compaction = Field dry unit weight / Max dry unit weight (lab)
A constant-head test was conducted on a sample of soil 15cm long and 60 cm^2 in cross-sectional area. The quantiities of water collected was 50 cm^3 in 20 seconds undera a head difference of 24 cm. Calculate the hydraulic conductivity. If the porosity of sand is 55%, calculate the average velocity and the seepage velocity. Estimate the hydraulic conductivity of a similar soil with a porosity of 35% from the results test. Please show all work!!
The following are results of a field unit weight determination test using sand cone method: Volume of hole = 0.0019 m3 Mass of moist soil from hole = 3.48 kg Water content = 12.43% Max. dry unit weight from a laboratory compaction test = 19.56 kN/m3 Determine the relative compaction, in percent. Hint: Relative compaction = Field dry unit weight / Max dry unit weight (lab)
Example 1 A sand come test has been performed in a competed fill made with the soil described in 21 example 6.1 20 Ydmax 19.0 kN/m³ 19 95% (Yd,max) 18 17 =18.1 kN/m³ S=100% Wo -11.8% 16 0 5 7% 10 w (%) 15 16% 20 25 Initial mass of sand cone apparatus = 5.912 kg Final mass of sand cone apparatus = 2.378 kg Mass of soil recovered from hole = 2.883 kg Moisture content of soil from hole = 7.0% Density of sand = 1300 kg/m³ Volume of cone below valve = 1.114 x 10-3 m³
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 %
The max and min dry unit weights of sand were determined in the laboratory to be 18.31KN/M3 and 15.25KN/M3 respectively.Determine the dry unit weight in the field if the relative density is 0.64.
Following are the results of a field unit-weight determination test performed on the same soil by means of the sand cone method: -Calibrated dry unit weight of Ottawa sand = 15.4019 kn/m3 -Calibrated weight of Ottawa sand to fill the cone = 5.3496 N -Weightof jar + cone + sand (before use) = 74.451 N -Weightof jar + cone + sand (after use) = 46.886 N -Weight of moist soil from hole = 29.509 N -Moisture content of moist soil = 10.21% DETERMINE AND SHOW COMPLETE SOLUTION 1. Dry density of compaction in the field in kg/cu.m.
A consolidated undrained tri-axial test was conducted on a normally consolidated clay sample and the results are as follows: chamber confining pressure = 110kpa deviator stress at failure = 96kpa pore water pressure = 66kpa these test results were used to determine the drained friction angle of the soil. compute the deviator stress in (kpa) at failure when the drained test was conducted with the chamber confining pressure changed to 163kpa.
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 Table 2 Moisture Content (%)Mass of WetSample (g)10.5 2033.211.8 2146.613.0 2203.514.9 2183.116.4 2147.617.6 2116.8

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