That is, steps should be comfortable to wear. People do not feel tired climbing stairs. Ideally, height 20 cm steps. Sure can be tolerated. But more than 25 cm will make people long tired. The width of the stairs at least 25 cm. To have enough to tread feet. Less dangerous. While the long stairs to a comfortable minimum passing 0,9-1 meters. High (rise) and the width of the steps (run) should be consistent. All steps must be got a great height and width are exactly the same. Therefore, the calculation must be done from the beginning design. Which must be calculated is the height above the floor and lower floor height (elevation). Divide the high elevation with the stairs.
1 October 2011