Abstract: A retaining wall system (10) is defined which includes a plurality of tires arranged in a plurality of courses (14). The tires can be offset within the wall and can be cut in various ways to advantageously improve the strength of the wall. In addition, reinforcing (25, 30, 32) formed from tires or conveyor belts can be associated with the wall system to improve the structural stability of the wall.

Abstract: A retaining wall system (10) is defined which includes a plurality of tyres (11) arranged in a plurality of courses (14). The tyres can be offset within the wall and can be cut in various ways to advantageously improve the strength of the wall. In addition, reinforcing (25, 30, 32) formed from tyres or conveyor belts can be associated with the wall system to improve the structural stability of the wall.

Abstract: A foundation comprising one or more layers or mattresses of tires, and a fill material provided within and/or between tires of each of the mattresses. The fill material is preferably a relatively coarse aggregate and provides a porous bed having relatively high drainage capacity. The lowermost mattress is cloth which is designed to allow the passage of water across the lowermost mattress whilst preventing the ingress of relatively finer material into the fill material and which can otherwise lead to degeneration of the foundation. At least some of the tires typically also have an upper sidewall removed therefrom.