Formwork system for exposed concrete stair slab

Assembly and disassembly of formwork system for reinforced concrete stair slab formation, with exposed finish with smooth texture on its underside and sides, with concrete step forming, on floors up to 3 m clear height, formed by: formwork surface of pine wood planks, amortizable over 10 uses, lined with waterproof chipboard, single-use with one face plastic-coated; horizontal support structure of pine wood planks, amortizable over 10 uses and vertical support structure of metal props, amortizable over 150 uses. Including release agent liquid, to prevent concrete adhesion to formwork.