Stair Tread widths for 3/16" thick bearing bars are displayed above. Design of Staircase Calculation – How to Calculate Rise and Tread Dimensions: While planning any stair important dimension to find out first that is rise and tread of stair and their numbers. How do i use the chart ? Other Bar Grating Series Stair Treads are available. When using 1/8" bearing bars, Stair Tread widths are 1/16" less. Flush stringer mount . Balustrade. Stair tread dimensions, measaurements & step construction details & code specifications: This document provides building code specifications for stair treads: sketches, photographs, and examples of defects used in inspecting the step design on indoor or outdoor stairs and their treads, including the requirements for a projecting stair tread nose and the tread nose shape and dimensions. These dimensions may be useful when laying out a staircase or if you have general questions about the size and shape of a traditional tread or a retro tread. Help on Permited Rise and Go dimensions. Stair Calculator rise run stringer and head-room plan diagram with full dimensions Stair Calculator - housed stringer diagram with full dimensions. The standard width of any stair may be between 1.1 to 1.6 m. In public use building like malls, cinema, shopping center larger width of stair can be used. Standard stringer mount. Standard Stair Tread Dimensions. The length of the landing should be at least equal to the width of the stair tread. If a stair is more than 44 inches wide, a handrail is required on both sides. Standard Stair Tread and Carrier Plate dimensions shown in chart are typical for GW & GAL Series Bar Grating. Perhaps more important than overall stair width are the proportions of each individual stair (all stairs within a single staircase should be uniform in dimension, of course). Three feet is better, and 3′6″ is the standard for normal occupancy. When using 1/4" bearing bars, Stair Tread widths are 1/16" more. Buy standard staircases to order online from £159.99 excluding vat, we have straight staircases available ready made and we have a selection of standard sizes winder staircase designs fixed sizes from a UK ISO9001 staircase manufacturer s12n2600 s12n2700 s13n2800 standard sizes low prices Risers – the vertical faces of each step – should be 6” whenever possible under typical conditions, as this dimension provides the most ergonomic function. Landings . Most fire codes do not allow stairs to rise more than 12 feet without providing a landing. Stairs come in many different forms, and while building a basic staircase may appear to be a simple task, there are actually a number of parameters, calculations, and building codes that must be considered. Here is a drawing detailing our standard stair tread and riser dimensions. Stair terminology and common building codes.