Stair details refer to the standard requirements for each of the various components of a flight of stairs.
Standard stair tread and riser size.
Stair riser heights and stair tread depths should be within the parameters of the code to avoid any potential trip hazards for inconsistencies.
Harvard university lists typical tread sizes between 8 and 11 1 2 inches.
Details are at stair tread dimensions.
A uniform flight of stairs provides a safety factor.
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.
Additionally the riser measurement of all of the treads should be as close as possible to identical.
8 1 4 to 9 stair tread thickness.
Required 1 to 1 1 2 projection beyond the riser face.
Definition of detailed specifications for open riser stairs.
Inconsistencies or variations in risers or treads could interfere with the rhythm of the individual using the stairs.
However the americans with disabilities act ada lists the minimum tread size as 11 inches which would be the effective minimum and likely the average size of the tread for any stairs built for public use.
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.
Standard stair tread dimensions.
A stairway in which there is a noticeable variation between the risers is a safety hazard.
Name a z.
Here is a drawing detailing our standard stair tread and riser dimensions.