SPIRAL STAIR DESIGN         Featuring: - Stainless steel trays cantilevered from a cenral post - Incorporates stainless steel risers to provide a clean aesthetic - Curved glass balustrade fixed to end of cantilevered treads with satin stainless steel bosses. - Shown from above, a range of materials for tread options: - Perforated stainless steel, Laminated glass with sandblast detail, natural stone or laminated tinted glass. - Other material options, wood or concrete. - Handrail variations to be discussed.