Given: H1 = Poisson's ratio of soil sample 1 H2 = Poisson's ratio of soil sample 2 = coefficient of earth pressure at rest %3D %3D k1 for soil sample 1 coefficient of earth pressure at rest %3D k2 for soil sample 2 If µ/42 = 1.5 and (1-µj)/(1-µ2) = 0.875, then the value of k/k2 will be %3D %3D %3D gab

a. determine the effective size D10 b. determine the coefficient of curvature A sample of dry coarse-grained material was taken through a layer of sieves and the following results were obtained. Make the necessary calculations and draw the particle distribution curve. Mass of soil Sieve No. Opening (mm) retained (g) 4 4.75 10 2.00 40 20 0.85 60 40 0.425 89 60 0.250 140 80 0.180 122 100 0.150 210 200 0.075 56 Pan 12

For Sample A (Below), determine the: a. Uniformity Coefficient b. Coefficient of Curvature c. Well graded, poorly graded or gap graded? Particle Size Distribution GRAVEL SAND SILT or CLAY Coarse Fine Course Medium Fine 100 100 90 90 80 80 70 70 60 60 50 50 40 40 30 30 20 20 10 110 100 10 1 0.1 0.01 0.001 Grain size in millimeters Percent finer by weight

Pressure (kN/m²)27 54 107 214 429 214 107 54 Void ratio1.243 1.217 1.144 1.068 0.994 1.001 1.012 1.024 The table above shows results obtained from an oedometer test on a specimen of saturated clay. A layer of this clay 2.5 m thick lies below a 10 m depth of sand, the water table being at the surface. The saturated weight for both soils is 19 kN/m³. A 10-m depth of fill of unit weight of 21 kN/m³ is placed on the sand over an extensive area. If the fill was to be removed some time after the completion of consolidation, what heave (mm) would eventually take place due to swelling of the clay? (0 d.p). Use unit weight of water of 9.8 kN/m3. Use log base 10.