3:47

7. Dams

9:27

3. Arches and Chains

6:09

The Effect of Water on Soil Strength

16:26

Water movement in the soil

10:00

Shear in Beams Model

8:09

How Soil Destroys Buildings

13:50

Vélo électrique mécanique

10:02

Piping Failure in Hydraulic Structures