Depending on use and local regulations, a minimum width of 80 cm is recommended for stairs in single-family homes and more than 1.00 meters in public buildings, taking into account the preliminary number of people who will use it. As a reference, according to the traditional book ‘Architects’ Data’ by Ernst Neufert, in a staircase of 1.25 meters, two people can go up and down at once, and in one of 1.85 meters, 3 people can do it at the same time , with a suitable distance of 55 cm between the person and the handrail.
After how many steps should a landing be included?
Ideally, a staircase should not have more than 15 steps in a row. After 15 steps, a landing should be provided. It is recommended that a landing measures at least the same as 3 steps.
What is the ideal height between the stairs and the ceiling?
The height between the steps and the ceiling must be at least 2.15 meters. According to Ernst Neufert, you can reach at least 2.00 meters. The height of the handrail can vary between 80 and 90 cm from each step.
How do I vary the proportions between the tread and the riser?
Stairs can have a variety of shapes and configurations, but the relationship between the tread and the riser must remain the same throughout to avoid causing imbalance in the user, who is already used to climbing or descending stairs in a certain way.
This formula will help you design a staircase correctly. However, calculations should always take into account the specifics of each project, as well as local regulations in the area where the project is located.
