Find the void ratio Porosity 0.2221

A soil with a volume of 0.0283 m3 has a specific gravity of 2.7, a dry weight of 0.376 kN, and a wet weight of 0.459 kN. 1) Determine the volume of voids (Ans. 0.0149 m3) 2) Determine the void ratio (Ans. 1) 3) If the soil was submerged, determine the effective unit weight (Ans. 8.34 kN/m3)

A Shelby tube has outside diameter of 3.0 in. and wall thicknessof 0.065 in. What is the area ratio of the tube?

Finding the expanded depth of the uniform mediumFilter medium sand grains (0.4mm in diameter)Ψ= 0.85specific gravity= 2.65depth of the bed=0.67mporosity=0.4T=20 Cμ= 1.002 .10-3N.s / m2ρw=998 .2 kg / m3 Determine the required backwash velocity to expand the bed to a porosity of 0.7.

. A natural soil deposit has a bulk unit weight of 18.44 kN/m3and water content 5%. Calculated theamount of water required to be added to 1 m3soil to raise the water content to 15%. Assume thevoid ratio remains constant. What will then be the degree of saturation? Take Gs as determined inquestion no. 2. G=2.69

The hydraulic conductivity of a sand at a void ratio of 0.62 is0.03 cm/sec. Estimate its hydraulic conductivity at a void ratioof 0.48.

Soil borings made at a site indicate that the top 8 m is a loose sand, with the groundwater table at 4 m below the ground surface. Below this is a fairly soft blue-gray silty clay with an average water content of 30%. The boring was terminated at 20 m below the ground surface when fairly stiff silty clay was encountered. For the upper sand gammadry = 14.0 kN/m3 and gammasat = 15.0 kN/m3 , where gamma is the unit weight. For the clay, ps = 2.70 Mg/m3 where p is density. (1) Calculate the total stress, pore water pressure, and effective stress at 0 (the surface), 4, 8, 14, 16, and 20 m below the ground surface.  (2) Plot the soil profile and the variation of total stress, pore water pressure, and effective stress with depth.

Subject: Soil Mechanics Please provide a solution and diagram A compressible stratum is 6 m thick and its void ratio is 1.70. If the final void ratio after the construction of a building is expected to be 1.61, what will be the probable ultimate settlement of the building in cm? a. 345.5 b. 63.75 c. 20 d. 12.68

A clay layer 5 m thick has double drainage. It was consolidated under a load of 127.5 kN/m2. The load is increased to 197.5 kN/m2. The coefficient of volume compressibility is 5.79 × 10^–4 m2/Kn and value of k = 1.6 × 10^–8 m/min. Find settlement in cm at 50% consolidation. a.25.78 b.10.32 c.32.56 d.20.27

The soil profile at a site consists of 5 m sand underlain by clay layer. The ground water table is 2 m below the ground surface. Average void ratio of sand is 0.52. Water content of clay is 42% and degree of saturation of sand above water table is 37%.Assume specific gravity of sand and clay is 2.65. 1. Compute the unit weight of clay.  a. 19.82 kN/m³ b. 17.47 kN/m³ c. 18.62 kN/m³ d. 16.20 kN/m³ 2. Compute the total pressure 10 m below the ground surface.  a. 185.41 kPa b. 160.25 kPa c. 140.53 kPa d. 153.62 kPa 3. Compute the effective pressure 10 m below the ground surface.  a. 106.94 kPa b. 96.52 kPa c. 115.62 kPa d. 108.36 kPa