Question 8 (12) Given following properties for the soil in the figure below, Ya 110 lbf/ft3...
Problem 1 Ground Surface A soil profile is shown to the right. The groundwater table is located 15 feet below ground. Calculate the total stress, pore water pressure and effective stress in the vertical and horizontal direction at points a, b, and c located Coarse Sand -120 lb/ft Ko 0.4 %at: 125 lb/ft3 a) 15, b) 40, and c) 58 feet below the ground surface. Stiff Clay = 110 lb/ft3 %at 115 lb/ft3 Ko= 1.3 58 Limestone Bedrock
With reference to the soil profile shown below, answer the following questions Y=122 pcf, O'= 5° 10 ft Yat-110 pcf, 0 = 10° 10 ft 10 A Ya 113 pcf, 0 = 15° Bedrock A) What is the pore water pressure at Point B? (5 points) B) What is the total stress at Point B? (5 points) C) What is the effective stress at Point A? (5 points) D) What is the shear strength at Point A? (5 points)
Detailed Solution Q1. A soil section is comprised of two layers with the following properties: soil 1 (0 to 3 m): Pary-1 7.65 kN/m2, %,-1961 kN/m2, soil 2 (3 to 8 m): %at-20.59 kN/m? The water table is 1.5 m below the ground surface. Plot the total vertical stress, pore pressure, and effective vertical stress over the soil section.
Compute the ultimate bearing capacity of a circular footing on a silt, using the following properties: Properties: Soil type: silt Cohesion: 25 kPa Friction Angle: 25 degrees Total unit weight of soil: 18 kN/m3 Expected footing dimensions: 3 m diameter cicular footing for a circurlar tank, bottom of footing at 5 m below ground level Very deep water table Note: - Use both Terzaghi and Meyerhof theories to justify your answer. - If there is anything missing in the problem...
Question 2 [Marks: 15 +10=25] 200kPa of construction stress was applied on top of the soil layers as shown in the figure below. (1) Calculate the settlement in the clay layer due to the construction (minimum of 2 sub layers is to be used). (W) If the soil went through 90% average degree of consolidation in 1 year, calculate the coefficient of consolidation (C.). 个 Sand Y = 20kN/m 4m Water table Clay (over consolidated) y = 16kN/m 100 4m...