subject: Composition of Steel Staircases [print this page] The steps of steel staircases are made up of two components i.e. tread and riser. Tread is the part where you step on i.e. the flat or horizontal part of a step whereas the riser is i.e. its front headed at 90 degree and found between each tread. They can either be separately attached or there can be stairs without risers depending on its design. Front of tread is rounded up with nosing. Nosing are special attachments for the purpose of safety i.e. they prevent slipping. Stringers or carriage support the steps and are placed on single side of steps for positioning the steps at an inclined position leading upwards. These are specifically cut in the form of steps so as to fit accurately on steps. Third part is Rails' which make staircases safer to be used. Handrails make our grasp stronger over steel staircases.
