| In its simplest form, the earth house technology consists of building circular, beehive-shaped houses with earth-filled tubes placed one on top of the other with strands of barbed wire between the layers to provide a Velcro-like grip. A permanent solution A long lasting earth home can be built with no wood , no bricks, no metal - and if necessary no cement. It just requires the soil from around the house and the labour of local people. So it's the ultimate environmentally sustainable building - and being self-built it gives great pride to the community. The walls gradually curve inward at the top to form a self-supporting, domed roof that needs no timber for support - an important factor in countries afflicted by deforestation. The tubes in which the earth is packed are usually made of woven polyester, but hessian bags can also be used. Built by the community that benefits Sometimes called an 'eco-dome' or ‘Adobe’ house after the native Indian word for ‘mud’ - one house, up to 16 feet wide, can be built in a few days by a family of four. A house can be built for under £400. Yet it can last decades if cement is added to the soil mix or if the exterior is plastered. It can withstand earthquakes and storms that would destroy most alternative structures - whether they be temporary or permanent. The technology is fascinating. It's a technique that can be learnt in a few days. Yet for the 25% of the world’s population with no material, no money, no architecture, nothing available to them except their labour and the earth under their feet, it presents a unique opportunity. |