GATE, PSUs preparation- Soil Engineering ( notes)- Part 9

Hello there,
Welcome to the part 9 of the one liner notes useful for the preparation of GATE and other similar examinations.

• A shallow foundation is defined as a foundation which has a depth of embedment less than its width.
• For sand of uniform spherical particles, the ratio of void ratios in the loosest and the densest states is 2.6.
• The description of 'sandy silt clay' signifies that the soil contains unequal proportions of the three constituents such that clay>silt>sand.
• A soil having particles of nearly the same size is known as uniformly graded.
• The soils most susceptible to liquefaction are saturated fine and medium sands of uniform particle size.
• The value of bearing capacity factor for cohesion Nc, for piles as per Meyerhof is taken as 9.0.
• The slope of the e - log p curve for a soil mass gives compression index, Cc.
• Degree of freedom of a block type machine foundation is 6.
• Given that damping ratio = 0.10 and damping coefficient = 225 kN sec/m. The the critical damping coefficient in kN sec/m will be 2250.
• The natural frequency of a vibrating foundation system increases as the square root of the spring stiffness and decreases with the square root of the mass of the body.
• Terzaghi's equation of ultimate bearing capacity for a strip footing may be used for square footing resting on pure clay soil with the correction factor 1.3.

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