The staircases are designed for access to gantries at all levels i.e. ground level to level one which can be of various heights to suite site conditions, multiple level gantries. Stairs are made up of steel frames and handrails with timber or steel treads. McIver stairs are 1.1m wide, 190mm risers with a 250mm tread. McIvers also custom fabricate our stairs to suite client requirements. McIvers also provide staircases for public access at major events such as Australian Grand Prix, Australian Tennis Open, public diversions on building sites.