1. If a soil has specific yield of 5% ,how much water could be drained over an area Of 14,000 sq m if the water table drops 1.5 m а. 1050 cu m b. 1054 cu m с. 1052 cu m d. 1055 cu m
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- 2. The sieve analysis data for a granular soil are given below. % passing 19 mm sieve =100 % passing 4.75 mm (4 sieve) = 61 % passing 2 mm = 45 % passing 0.075 mm (200 sieve) = 16 % passing 0.06 mm (4 sieve) = 13 % passing 0.05 mm ( sieve) = 8 % passing 0.002 mm (4 sieve) = 5 What are the percentages of gravels, sands and fines within this soil, based on the Unified Soil Classification System (USCS), AASHTO, USDA and MIT Standards?,Using Unified Soil Classification System, determine the following: (a) Coefficient of Gradation (b) Group Symbol. Passing No. 4 = 47 % Passing No. 200 = 10 % D10 = 3.45 mm %3! D30 = 6.29 mm De0 = 13.72 mm Plasticity for the minus No. 40 fraction: Liquid Limit = 28 % Plastic Limit = 17 % O GC-GM GP-GC O GC O Coef. Of Gradation = 0.84 O GP O Coef. Of Gradation = 3.97For the two systems shown below (not to scale), the following are given. • Ah is the same for both systems. • The length of k₂ soil is twice the length of k₁ soil. • The cross-sectional areas of the soil samples are the same. • k₂= 2k₁ (Permeabilities) • q₁ = 100 cm³/hour Find q2 9₁ Ah 921 k k₂
- Question 2 A soil has a water content of 25 %, a void ratio of 0.7, and a specific gravity of solids of 2.7. (a) On the phase diagram shown below, choose the total volume to be equal to one, and fill up all other quantities. Use Kg for mass and m³ for volume. Volume (m³) V₁ Vy Vw Vs AIR WATER SOLIDS Phase Diagram Mass (Kg) Mw X Ms (b) Use the phase diagram to calculate the following quantities. (i) total density (ii) dry density (iii) degree of saturation (iv) saturated density (assume no volume change) M₁2. The moist weight of 5.56 × 10-3 m³ of a soil is 120.3 × 10-³ kN. The moisture content and the specific gravity of the soil solids are determined in the laboratory to be 10 % and 2.6, respectively. Calculate the following: a. Moist unit weight. (Enter your answer to three significant figures.) |kN/m³ b. Dry unit weight. (Enter your answer to three significant figures.) |kN/m³ c. Void ratio. (Enter your answer to three significant figures.) e = d. Porosity. (Enter your answer to three significant figures.) n = e. Degree of saturation. (Enter your answer to three significant figures.) S = |% f. Volume occupied by water. (Enter your answer to three significant figures.) Vu = dm³Note: Give me both solutions with clear steps. A) The particle size distribution for Soil 1 is shown. What are the USCS group symbol and group name of this soil? B) The particle size distribution for Soil 2 is shown. The soil is inorganic and has the following Atterberg Limit values: LL=34 and PL=29. What are the USCS group symbol and group name for this soil?
- Classify the soil by IS classification Given:- Liquid limit=22% Plasticity limit=19% Percentage passing through 4.75mm IS sieve=98.5% Percentage passing through 75 micron IS sieve=35% D60=0.22 D30=0.19 D10=0.16Q2: A 0.01 m' of saturated soil sample has a unit weight of 1.6g/cm3. After it is dried in the oven, the weight of the soil sample reduced to 13.5kg. Use a phase diagram, determine the following: Weight of water for the saturated soil, Ww Water content, wc Ws WATER Void ratio, e Porosity, n SOLID befare trng W. Va SOLID efter eningQ1: A. Answer in True or False 1. A soil has a Cu =1, then it is considered as a poorly graded soll. 2. A soil has L.L-60% and P.L-35%, then it plots a point below the A-line in the plasticity car 3. A soil described with a symbol (SP) has % passing No. 200 sieve more than 50% 4. Decreasing water content below shrinkage limit is accompanied with a decreasing in void ra 5. Water molecules are considered polar and known as dipoles. 6. Dry Density is the smallest density. 7. Capillary rise is directly proportional to the pore channel diameter. 8. The unconfined compressive strength is twice the undrained cohesion. 9. Piping or boiling occurs when effective stress equals to zero. 10. It is assumed that the secondary compression begins when the primary conso
- A sample of soil has a volume of 0.57 ft³ and a weight of 57.30 lb. After being dried in an oven, it has a weight of 49.10 lb. It has a specific gravity of solids of 2.66. Compute its moisture content and degree of saturation before it was placed in the oven. Solution: ● ● ● Moisture content: @ = Unit weight of water is: %d Degree of saturation: S = = %; lb/ft³; %.A Cylindrical soil sample of 7.5 cm height and 3.75 cm diameter has been prepared at the shrinkage limit. If the sample is now allowed to absorb water so that its water content reaches the liquid limit, what will be its volume? Given ?? = 62%, ?? = 34%, ?? = 21%, and ?s = 2.68.Give me right solution. The weight of a soil sample is 186 g, the weight of water in the soil is 38 g. is. The volume of this soil, which has a grain specific gravity of 2.71, is 100 cm3. In the light of the information given, the saturated unit volume weight of this soil is ?