Apr 14, 20202 min
Updated: Apr 27, 2020
161. Lime stabilisation is very effective in treating plastic clayey soils
162. Undisturbed samples are obtained by thin-walled samplers
163 Stationary piston sampler and rotary sampler are both thin-walled samplers.
164. The curves A, B and C shown in Fig. 8.2 are respectively the stress-strain curves for Stress
dense sand, loose sand and clay
165. Greater skin friction retards the sinking of well
166. The bearing capacity of a strip footing on a saturated clay is 120 kN/m². The bearing capacity of a circular footing (diameter = width) will be.
more than 120 kN/m²
167. A plate load test is useful to estimate both bearing capacity and settlement
of foundation
168. The radius of friction circle or Φ-circle in friction circlp method is r sinΦ
169. The largest value of stability number is 0.261
170. A shallow foundation is defined as a foundation which has a depth of embedment less than its width
171. For an anisotropic soil, permeabilities in x and y directions are Kₓ and Ky
respectively in a two dimensional flow. The effective permeability Keq, for the soil
172. For sand of uniform spherical particles, the ratio of void ratios in the loosest and the densest states is: 2.6
173. The description of 'sandy silty clay signifies that the soil contains unequal proportions of the three constituents such that clay > silt > sand
174. Increasing the depth of foundation in saturated clays results in an increased
ultimate bearing capacity for strip footings the term in the bearing capacity
equation qNq, increases with depth.
175. A soil having particles of nearly the same size is known as: uniformly graded
176. The unit weight of a soil at zero air voids depends on:
a)specific gravity
b) water content
c) unit weight of water
177. The soils most susceptible to liquefaction are saturated fine and medium sands of uniform particle size
178. The value of bearing capacity factor for cohesion N𝒸, for piles as per Meyerhof is taken as 9.0
179. The slope of the e-log p curve for a soil mass gives compression index, C𝒸
180. If r = frequency ratio, D = damping ratio, then magnification factor in a damped forced vibration is equal to