Retaining Wall Failure
Many retaining structures are not as robust as they should be. Although these often perform satisfactorily for many years inadequate walls can suddenly fail. This could be due to an increase in loading at the top of the wall, excavation undermining the base of the wall or a build-up of water pressure behind the retaining structure. Failure of the retaining structure often takes place quickly with the total collapse of the wall and the retained soil.
Shire investigated the collapse of retaining walls in domestic property, gardens, river banks and highway structures. Remedial schemes included conventional retaining structures, gabion walls, sheet piling and soil nails/anchors.