Indoor stairs – Straight
This group includes single-flight stairs which, to put it simply, are stairs which allow one to climb up using one flight, without any changes of direction. Such a type of stairs is referred to as “safe” stairs because it is mostly composed of rectangular steps. It should be pointed out that this type of stairs works in case of a relatively small number of steps (it is estimated that the number is up to 20 steps) and height of the floor of up to 3 m. In case aforementioned parameters are exceeded, the stairs cease to be comfortable and then one should consider other solutions.