Question 5 The Atterberg limit data sheet of an experimental session is given below Sample no 1 3 Mass of empty can and lid 22.75 24.57 2355 Mass of can, lid and moist soil (g) 29.24 28.69 28.98 Mass of can, lid and dry soil 28.47 26.91 27.10 Number of drops 29 26 30
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Calculate the following
i. Liquid limit
ii. Plastic limit
iii. Plasticity index
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- a layer of soil in a tube that is 100mmx 100mm in cross section. Water is supplied to maintain a constant head dierence ot a ocross the sample. The height of each soil sample is 100mm. Knowing that the thiree soll sample were having the sanme length the distane of point B to Ais 300mm. Calculate the eguivalent kin cm/sec from point A to B if k1 k2. and k3 is equal to 1x10 cm/se. 3x10 cm/sec and-4.9x10cm/ser espeeSituatlon 02. In the soil report gathered in a construction site, the engineer observes the water flow of the soil on site to test the bearing capacity of that portion of a land to whether it is feasible to construct a commercial building in that area. The following data were gathered. DAY 05 2.66 2.30 1.67 11 01 02 03 04 06 07 08 09 10 0.13 12 RAINFALL, in 1.20 EVAPORATION, 0.20 0.20 0.13 1.55 1.40 0.12 0.12 in WATER LEVEL, 6.24 | ft 5.33 The project site has a total lot area of 39.120 square meters, and the soil analysis was measured 7ft below the ground. In the site development analysis, nearby soil is observed as incapable of percolation and infiltration. Compute the total water outflow in the given area in cfs.76 ll 6 Q3.png The data from standard and modified proctor test on a soil sample (density of solids: 2680 kg/m3 ) are provided below: Standard proctor test Modified proctor test Dry density (kg/m’) 1873 Dry density (kg/m®) Water content (%) Water content (%) 1691 9.3 9.3 1715 11.8 1910 12,8 1755 14.3 1803 15.5 1747 17.6 1699 18.7 1685 20.8 1641 21.1 1619 23 a) Plot the compaction curves (both standard and modified in one graph). b) Establish the maximum dry density and optimum water content for each test.
- Size of sample No. of +ve results No. of -ve. results 1 4 1 0.1 3 2 0.01 2 0.001 0 3 5 Determine the MPN using Thoma's Equation.determine the liquid limit of the soil test no 1 2 3 4 cone penetration in mm 12 16 23 28 mass of wet soil + container (g) 34.4 36.7 41.5 45.7 mass of dry soil + container (g) 28.1 29.1 31.2 33.9 mass of container (g) 10 12.4 11.2 11.9A TDR probe of a length of 60 cm was installed vertically into a soil profile befor e seeding wheat in the spring. TDR reading on May 15 (beginning of the season) was L0 = 2.900 m ; L1=5.114 m. On the day of harvesting September 8 (end of the season), the reading was L0 =2.900 m and L1=4.331 m. Assume there is no rainfall, what was the total change in soil water storage in the root zone (60 cm depth)?
- 76 .ll Q3.png The data from standard and modified proctor test on a soil sample (density of solids: 2680 kg/m3 ) are provided below: Standard proctor test Modified proctor test Dry density (kg/m) 1691 Dry density (kg/m') 1873 Water content (%) Water content (%) 9.3 9.3 1715 11,8 1910 12.8 1755 14.3 1803 15.5 1747 17.6 1699 18.7 1685 20.8 1641 21.1 1619 23 a) Plot the compaction curves (both standard and modified in one graph). b) Establish the maximum dry density and optimum water content for each test.8. Soil samples were taken at different locations from a 0.4 ha farm using the core samplers (10 cm diameter x 5 cm length) about 48 hours after a rainfall event. The following measurements were made before and after oven drying the samples: Sample No. Mass of wet sample Mass of dry sample (gm) 651.49 (gm) 549.78 1 2. 644.90 541.93 3 632.47 530.15 4. 613.12 510.51 647.92 545.85 628.83 593.96 526.22 7. 490.88 8 602.19 502.66 572.56 471.24 542.00 10 644.44 a) Calculate the average water content of the soil (% volume). b) Calculate the average depth (mm) of water present in 50 cm depth of the soil. c) Calculate the average volume of water present in the soil. d) Assuming the soil water conditions at the time of sampling represent the field capacity water content of the soil and assuming further that the average permanent wilting point water content of the soil on the farm is 8.73 % by mass, compute the average water content of the soil at irrigation for an allowable soil water depletion…3. A constant head permeameter has an internal diameter of 62.5 mm and is fitted in the side with three manometer tappings at points A, B and C. During tests on a specimen of sand the following data were recorded: Test no. 3 Quantity of water collected in 5 min. 136.2 ml 184.5 ml 309.4 ml Manometer level (mm) above datum A 62 112 B 90 122 175 Length between tapping points: A-B 120 mm B-C-125 C 117 164 244
- Problem 1. A liquid limit test conducted on a soil sample in the cup device gave the following results: 1 2 3 4 Test No. Number of blows 40 27 23 19 35.62 36.92 41.37 46.80 Weight of Container + Lid + Wet Soil (g) Weight of Container + Lid + Dry Soil (g) Weight of Container + Lid (g) 31.08 30.19 33.11 35.78 13.05 11.74 12.36 11.45 The plastic limit test and natural water content. Natural Water Content Test Test No. 1 1 2 22.12 17.53 16.97 Weight of Container + Lid + Wet Soil (g) Weight of Container + Lid + Dry Soil (g) Weight of Container + Lid (g) 20.59 15.45 14.93 13.07 7.84 7.5 The shrinkage limit test. Weight of Dish with petroleum jelly (g) 11.3 38.51 Weight of Dish with petroleum jelly + Wet Soil (g) Weight of Dish with petroleum jelly + Dry Soil (g) 32.81 Volume of Shrinkage Dish (cm³) 15.26 Volume of Oven-Dried Soil Pat (cm³) 12.83 Create a spreadsheet for the result of the Atterberg Limit Test above which will determine and show the following: a. Flow curve b. Liquid Limit c.…1. Percent passing on sieve 600um Weight Individual Cumulative Percent Sieve Retained Percent Percent Passing (g) 4.75mm 31.5 2.36mm 67.6 1.18mm 96.5 600um 111.1 300um 60.5 150um 115.6 75um 17.5 pan 31.51. Percent passing on sieve 600um Weight Retained Individual Cumulative Percent Sieve (g) Percent Percent Passing 4.75mm 31.5 2.36mm 67.6 1.18mm 96.5 600um 111.1 300um 60.5 150um 115.6 75um 17.5 pan 31.5 O a. 38.70 O b. 36.70 O c. 34.70 O d. 40.70