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- Properties of soils IV Calculate the degree of saturation of a sample of soil with mass (undried, original) of 6.6 g, a dry mass of 2.6 g, a total volume of 6.9 cm3 and a dry volume of 3.7 cm3. Provide the answer to three significant figures. Answer is 1.25.A soil engineer collects a sample of soil having a moist unit weight of a soil of 24.5 kN/m³, water content available is 10 % and the specific gravity of the solid is 2.50. what is the degree of saturation of the soil? (unit weight of water = 9.81 kN/m³)Question 37 The dry density of a soil is 1,758.14 kg/m3. GIven that Gs = 2.67, what would be the moisture content (in percent, %) of the soil when saturated? Round off to two decimal places.
- Calculate the soil water content on volume basis when a soil sample weighs 512 g and that on oven drying weighs 477 g. The bulk density of the soil is 1.48 ???3⁄.1. Calculate the amount of CaCO3 required to raise the pH of a hectare of this soil to pH6? (X-axis) Weight of lime added to 250g soil: 0,1,2,3,4,5. (Y- axis) pH: 3.58,5.05,6.56,6.76,6.94,6.96, respectively. 2. How many kg P/ha is 20 ppm P? ha= 2x 10^6; P= phosphorusLaboratory tests performed on a saturated alluvial subgrade soil gave the following information: In situ water content = 11.9%, Specific gravity = 2.65, Soil size distribution: D100 = 51 mm, D75 = 30 mm, D60 = 20 mm, D45 = 15 mm, D30 = 8 mm, D10 = 4.76 mm, D8 = 2 mm, D4 = 0.08 mm, < 2 m = 4% a. Is this soil well graded? Classify it by the AASHTO and Unified systems b. Using the sieve analysis soil data and the classification systems, estimate for a total of 100% the approximate percentages of coarse aggregate (gravel), fine aggregate (sand), silts, and clays?
- What is the significance of a Soil’s Index Properties? Briefly explain the process of calculating the water content of a soilSoil samples A and B have void ratios of 0.5 and 0.7 respectively. If 1.5 m³ of soil sample A and 1.7 m³ of soil sample B are mixed to form sample Chaving a volume of 3.2 m³, which one of the following correctly represents the porosity of sample C? ⚫ (a) 0.375 (b) 0.60 (c) 1.66 (d) 2.66 [CSE: 2002]A soil specimen having a volume of 0.012 m3 has a specific gravity of 2.60. It has a moist mass of 20.6 kg and a dried mass of 16.1 kg. Compute the dry unit weight of the soil. Group of answer choices
- Solve the following problems. Provide complete solutions and summary of answers. The dry density of the soil is 1780 kg/cu. meter if the specific gravity is limited to 2.68 what would be the water content of the soil when saturated?1. If a soil sample has a dry unit weight of 19.5 KN/m3, moisture content of 8%and a specific gravity of solids particles is 2.67. Calculate the following:a) The void ratio.b) Moisture and saturated unit weight.c) The mass of water to be added to cubic meter of soil to reach 80% saturation.d) The volume of solids particles when the mass of water is 25 grams for saturation Ans:a.) 0.343b.) 12.85% and 22 KN/m3 c.) 44.8 kgd.) 72.84 cm3 Please show your solutions and the final answers are provided above.1. The saturated density of the soil sample is 2.2x10^-3 slugs per cubic inch, with a specific gravity of soils of 2.69; calculate the following: a. Density in g/cm^3.b. Unit weight in kN/m^3.c. Dry Unit Weightd. Void Ratioe. Degree of Saturationf. Porosityg. Moisture Content