Extreme Structures is a Concrete Slabs and Raft Foundation Contractor specializing in building, reinforced concrete slabs, concrete staircases, columns, beams and formwork in the residential and industrial market for the Johannesburg and Pretoria areas in Gauteng. We also do in-situ concrete slabs that are built on the building site using formwork. Our Structural Engineer is also available to help with the design of concrete slabs and raft foundation. Civil engineering services we offer include structural analysis and computational mechanics, design, layout & certification of concrete, steel, and other structures.