As seen used in the structures to your left -the Otto residence in progress and the Hunt residence, Rastra is the primary building material....reducing the quantity of timber used in these projects and offering recycled materials. It is made of recycled polystyrene beads, covered with a cementitious skin and molded into hollow elements that -when erected- create a forming system for steel-reinforced concrete. This offers flexibility , integrity, and simplicity to creative, sculptural forms in building. more in depth reading

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