Standard Stair Tread And Riser Size

8 1 4 to 9 stair tread thickness.

Standard stair tread and riser size.

Inconsistencies or variations in risers or treads could interfere with the rhythm of the individual using the stairs. Standard stair tread dimensions. Name a z. The greatest riser height within a flight of stairs cannot exceed the smallest by more than 3 8 inch.

Additionally the riser measurement of all of the treads should be as close as possible to identical. 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. Details are at stair tread dimensions. Definition of detailed specifications for open riser stairs.

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. 1 or greater tread is supported by the riser. 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.

Harvard university lists typical tread sizes between 8 and 11 1 2 inches. Stair riser heights and stair tread depths should be within the parameters of the code to avoid any potential trip hazards for inconsistencies. A uniform flight of stairs provides a safety factor. Stair details refer to the standard requirements for each of the various components of a flight of stairs.