Answer Happy

conductivity of the four different soil profile using the formula below (20 marks) Hazen (1911) = KHazen = C (d10²) Beyer (1964) = KBeyer=[Cox (₁0) Harleman et al. (1963) = (psk), k = 6.54x10-4xd₁0² Matthess & Ubel (2003) = K = 0.00357 x d50² | Where: = dimensionless coefficient based on grain size and sorting character K = hydraulic conductivity d10 = grain diameter (cm) of the 10% fraction of the grain size distribution d50 = grain diameter (cm) of the 50% fraction of the grain size distribution d60 = grain diameter (cm) of the 60% fraction of the grain size distribution = a coefficient defined as 6.0 x 10-4 × log10 (500/Cu) p = density of the fluid water = (1) = viscousity of the fluid water (0.01 g/cms). g= acceleration 9.8 m/s or 980 cm/s2
2. Plot all the derived hydraulic conductivity values in a single graph to show their magnitude 10 marks 3. comment on their differences 10 marks 4. Limitation of the Hazen methods 5 marks 5. Limitation of the Beyer Methods 5 marks Table 1: Showing uniformity and coefficient value U C 1.0-1.9 110x10 2.0-2.9 100x10 3.0-4.9 90x10 5.0-9.9 80x10 10.0-19.9 70x10 >20 60x10 Clay & Silt Gravel Percentage finer 100 90 80 70 60 50 40 30 20 10 Sand ABK Profile -ABKA -ABK B -ABK C --ABK D