Standard Stair Tread Rise And Run
For convenience and flexibility this stair stringer calculator comes in two forms the automatic and manual click on the icons to determine the best calculator to use for your stairs.
Standard stair tread rise and run. Application this section covers all stairways including standard spiral ship and alternating tread type stairs except for articulated stairs stairs that change pitch due to change in height at the point of attachment such as those serving floating roof tanks stairs on scaffolds stairs designed into machines or equipment and stairs on self propelled motorized equipment. Stair width fixed stairways shall have a minimum width of 22 inches. 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. This is a measurement from the nose of the tread to nose of the tread.
Rise r 7 3 4 run r 10 r r 17 3 4 good 2r r 25 1 2 within range stair will be comfortable. A landing is a platform between two flights of stairs. The run is the measurement of the tread which needs to be a minimum of 10 inches if the tread has and overhang on it see image. The tread is the horizontal section of each stair sometimes called the run.
This is the surface that the user steps on. Any uniform combination of rise tread dimensions may be used that will result in a stairway at an angle to the horizontal within the permissible. The width required tread type hand rails height. This free stair calculator determines stair parameters such as rise total run and angle stringer length based on height run tread and headroom requirement.
We describe how to translate the stair rise and run into a specific number of stair treads and risers that will be uniform and of proper safe dimension. It is also the approach space at the top and bottom of the stairs. 1910 24 e angle of stairway rise fixed stairs shall be installed at angles to the horizontal of between 30 deg. They use the term tread instead of run but i think that s the cause of some confusion so i ll use the standard term run irc code limit stair.
The irc code does not allow a distance greater than 7 of an inch from one step tread to the next. Stairs australian standard as1657 as1657 stairs details. Includes risers and going ration. The section of the tread that overhangs the riser below.
In my days as a carpenter i learned two different.