SSC SSC JE Civil 2025 Mock Test Series (Paper 1 & Paper 2) Soil Mechanics and Foundation Engineering Permeability
A horizontal stratified soil deposit consists of three uniform layers whose thicknesses are 6, 3, 12 m respectively. The permeabilities of the layers are 4 × 10-4 , 25 × 10-4 , 7.5 × 10-4 mm/s. Find the effective average permeability in the horizontal direction.
1
7 × 10-4 mm/s
2
6 × 10-4 mm/s
3
0.9 × 10-4 mm/s
4
9 × 10-4 mm/s