Question

Incremental Vertical Stress - for each of the graphs below, choose the correct answer using the graphs a b or c for each.

1) UDL over limited area at the ground surface

2) Soil mass

3) UDL over extended area at the ground surface

Match the vertical stress curve in Figure above with the type of the load that produces it. Vertical stress (kPa) TC) Depth (m) (b) (a) Curve (a=1) [Choose] Curve (b=2) [Choose] Curve (c=3) [Choose]

Answer 1

Ans) Curve 'c' is produced by UDL over limited area at ground surface. At the surface,  the stress is maximum due to loading but it decreases as the depth increases. So, curve 'c' matches with case

Ans) Curve 'a' is correct for soil mass because stress due to soil mass will always increases linearly with depth

Ans) Curve 'b' is produced by UDL over extended area at ground surface because the stress will remian constant with depth so curve 'b' matches with this case .