Standard Stair Tread And Riser Size

The greatest riser height within a flight of stairs cannot exceed the smallest by more than 3 8 inch.
Standard stair tread and riser size. Required 1 to 1 1 2 projection beyond the riser face. 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. Regulated by building codes stair details specify the sizes of risers and treads stair widths the placement of handrails and guardrails and construction methods for fabricating stairs. Stair riser heights and stair tread depths should be within the parameters of the code to avoid any potential trip hazards for inconsistencies.
Inconsistencies or variations in risers or treads could interfere with the rhythm of the individual using the stairs. Standard stair tread dimensions. Additionally the riser measurement of all of the treads should be as close as possible to identical. Details are at stair tread dimensions.
Stair details refer to the standard requirements for each of the various components of a flight of stairs. Stair tread run or horizontal depth. 1 or greater tread is supported by the riser. Definition of detailed specifications for open riser stairs.
Name a z. A stairway in which there is a noticeable variation between the risers is a safety hazard. Here is a drawing detailing our standard stair tread and riser dimensions. A uniform flight of stairs provides a safety factor.