Structural rammed earth at the Centre for Alternative Technology

Abstract

Focuses on the design, specification, and construction process of the new Shop and Information Centre at the Centre for Alternative Technology (CAT) in Machynlleth, Wales. This 450 m2 development with a budget of just under £500,000 incorporates a number of sustainability features, including water recycling, sewage treatment, and solar energy. One of its main innovative features is the use of nonstabilized rammed earth elements as load-bearing columns and wall panels located within the footprint of the building. The authors believe these earthen elements to be unique in their size, composition, and function in the context of modern UK buildings. Also, 1,700 compressed earth blocks, manufactured on-site, are being used in a conventional cavity wall construction. The presentation deals with the particulars of research into the material properties, construction methods, and supply chain.