how wall don't collapse!

Added: 2026-05-22

[00:00:00]If a retaining wall doesn't have a drainage system, sooner or later, it will fail. The water that infiltrates the soil accumulates behind the wall, creating hydrostatic pressure. This pressure increases progressively and can cause cracks, shifting, or even total structural collapse. The weep holes are those visible openings in the wall.

[00:00:18]Their function is to release the accumulated water. Behind the wall, gravel and a perforated drain are placed to channel the water toward those outlets.