House Stairs Step Size
Open risers with openings more then 30 inches 762 mm vertical to the floor should not permit the passage of a 4-inch-diameter 102 mm sphere.
House stairs step size. The rise is the vertical measurement taken from one step level to the next. How to Use the EZ Stair Calculator. Or to work out how many steps you need take your ceiling height and divide by lets say 16 to start with.
Staircase Tread Run Depth. To determine the overall run multiply the step run by the planned number of steps in your staircase. Risers and that equation is 6 6 12 24.
A step riser is the distance from the top of one step to the top of the next step measured vertically. The general rule in the US is 7-11 a 7 inch rise and 11 inch run 1778cm-2794cm. The tread depth is the distance from the front edge or nosing a tread projection that overhangs the riser below of one step to the front edge or.
The CBC 100333 Stairways and Landings model code states these stairway specifications. The design of this staircase has been carefully considered to ensure it snakes neatly up and behind. Standard risers are around 200mm so aim for this.
Treads and 6- in. Risers must have a maximum variance of 0375. More exactly no more than 7 34 inches 197cm for the riser vertical and a minimum of 10 inches 254cm for the tread horizontal or step.
To stay within Building Regulations a domestic staircase needs a rise of between 190mm and 220mm. To calculate the run of the stairs simply multiply the tread dimension ensure this doesnt include the nose - see below by the number of steps. Either B or C is required.