Average Stair Tread Size

Unit run is carefully considered based on both safety and cost.

Average stair tread size.

The tread size min 10ins 25 4cm is dictated by the average adult foot size although it is not necessary to be able to fit your entire foot on a tread in order for walking up the stairs to be both comfortable and safe. Unit run is the horizontal measurement of from the front to the back of a single stair which is known as the tread standard code requires that each stair tread fall between 9 inches and 11 inches 22 9 cm and 27 9 cm to allow people to safely ascend and descend stairs. The walking surface of each step is known as the tread. If you think about it you.

For people with disabilities the minimum tread size is 27 5 cm 11 inches which would be the effective minimum and likely the average size of the tread for any stairs built for public use. This free stair calculator determines stair parameters such as rise total run and angle stringer length based on height run tread and headroom requirement. The average stair tread size by keith allen hunker may earn compensation through affiliate links in this story. Explore a number of building and housing related calculators as well as hundreds of other calculators involving topics such as finance math fitness health and more.

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. Because they only sit on the top of the stair the length of the tread is limited to the size of the average step. The riser height max 7 ins 19 7cm is limited by the way in which we come down the stairs. On the first stairs i built i sized them for a 1 8 riser and a 2 8 tread.

Stair treads come in a variety of colors styles shapes and sizes. Although the rise itself wasn t terrible something about using it felt very cramped and i set out to find what went into a safe comfortable stair. Stair details refer to the standard requirements for each of the various components of a flight of stairs. The stair tread is the surface area of each step within the stair assembly.

Stair tread depth is more of an issue for descending rather than ascending stairs. Further the tread measurement of every tread in a stairway should be as close as possible to identical. Length most stair treads are not made to wrap around the lip of the stair. The distance between each step is referred to as the rise.

Most stair treads measure between 8 and 10 inches long with longer treads being used on.