Does a Gabion Retaining Wall Need Drainage?

Gabion walls are highly permeable and are able to bleed off any hydrostatic pressure, eliminating the need to install a drainage system. Unlike a traditional concrete wall, gabion walls are flexible and are able to move with the earth.

Do gabion walls need drainage?

Gabion retaining walls need adequate drainage

The design of the drainage system is just as important as the design of the retaining wall.

How deep should a gabion retaining wall be?

The standard design for a gabion wall is a pyramid. In general, for every 1m increase in wall height, the bottom row basket depth should be increased by half a metre. For a 2m high wall the bottom row should be 1.5m deep and the top row should be 1m deep. It is still standard to use 3mm wire thickness for both rows.