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45. Which of the following represents the type of flow of water through the void

ID: 1732771 • Letter: 4

Question

45. Which of the following represents the type of flow of water through the void spaces of mos t soils? a. Impermeable b. Laminar c. d. Laminar and Turbulent Turbulent 46. True or False: The terms Hydraulic Conductivity and Coefficient of Permeability mean the same thing 47. Which of the following represents the relationship between total stress and effective stress in a saturated soil? a. Effective Stress = Total Stress + Pore Water Pressure b. Pore Water Pressure Total Stress +Effective Stress c. Total Stress Effective Stress +Pore Water Pressure d. Total Stress Pore Water Pressure 48. True or False: For two different line loads acting at the ground surface, the stress increase at any point beneath the surface is 49. True or False: For a diagonal load acting at the ground surface, the stress increase at any point beneath the surface is the sum of 50. True or False: The increase in vertical stress at a given depth below a vertical strip load is the same value below both the center 51. True or False: The increase in vertical stress beneath the center of an embankment load can be determined by summing the determined solely by the stress increase of the larger load the stress increase of the horizontal and vertical components of the load and edges of the vertical strip load vertical stress increase caused by both a uniformly distributed and triangularly distributed surface load True or False: The change in vertical stress beneath the center of a circular load does not decrease linearly with depth rectangle into four pieces and summing the stress increose at the mutual corner of each of the corresponding rectangles True or False: The change in vertical stress caused by a uniformly loaded area can typically be calculated by multiplying the 52. 53. True or False: The change in vertical stress at a point beloy the center of a rectangular load can be calculated by dividing the 54. uniform load by an influence factor, which factor is a function of depth, distance, and shape of load 55. For a uniformly loaded rectangular area (dimensions of 10 ft x 20 fil), what is the influence factor (i) for a depth of 10 ft beneath the CORNER of the loaded area? a. 0.0092 b. 0.0840 C. 0, 1752 d. 0.1999 For a uniformly loaded rectangular area (dimensions of 10 ft x 20 ft), what is the influence factor (/4) for a depth of 10 ft beneath the CENTER of the loaded area? a. 0.244 b. 0.481 C. 0.800 d. 0.994 56. For a uniformly loaded square area, what is the stress to load ratio at a depth of 2B below the CENTER of the loaded are a. 0.9 b. 0.5 C. 0.3 d. 0.1 57. a? 58. Which of the following is the result of a volume change in a saturated cohesive soil because of expulsion of the water occupying the void spaces? a. Total Settlement b. Immediate Settlement C. Primary Consolidation Settlement d. Secondary Consolidation Settlement

Explanation / Answer

45) (b) laminar ,In most soils, the flow of water through the void spaces can be considered laminar

46) true ,The coefficient of permeability of a soil describes how easily a liquid will move through a soil. It is also commonly referred to as the hydraulic conductivity of a soil.

47) (c) total stress=effective stress + pore water pressure

Total stress (?) is equal to the sum of effective stress (?’) and pore water pressure (u)

48) true

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