Gabion retaining walls


Gabion retaining walls


Gabion retaining walls

Gabion retaining walls are gravity walls made with steel cages filled with large angular rocks.  The walls are normally battered or stepped back into the slope.

The idea was first patented by Gaetano Maccaferri in the late 1800’s in Italy.  Maccaferri are still one of the largest suppliers of gabion baskets in the world.

The baskets themselves are relatively inexpensive.  The cost of the rock fill however varies greatly depending on your location.  Therefore you will need to check with your local suppliers first.

Because they are gravity walls, they are relatively thick and this makes them unsuitable for some restricted sites.  However, in the right location they can provide an attractive solution.

The durability of the wall is normally governed by the type of basket used rather than the rock fill.  Galvanised steel wire is commonly used.  However, PVC coated and stainless steel wires are also readily available.

We need the following information to design a gabion retaining wall

information on the ground conditions

the difference in height between the higher and lower ground levels

the use of the land on the higher side of the wall (eg whether vehicles can drive close to the wall)

details of any buildings or storage areas close to the high side of the wall

details of any trees close to the wall

Design information

All design work is carried out in accordance with BS8002.

The calculations provided will be suitable for Building Regulation approval, if this is required.

Excavations may fall under the Party Wall Act. Please seek specialist advice.