Marching staircase.
The marching staircase is the most common design, convenient for humans and economical for space.
A horizontal site between floors is a march, approximately 3-15 steps are separated, depending on the height of the structure. If the stairs have more than ten steps, then the march is divided by another intermediate platform, and it is considered a turning point. The platform can be replaced by running steps, which generally saves a place in the house. Depending on the presence of the approaches, marching stairs are divided into closed and open.
In appearance, stairs differ into rotary and straight, one – or multi -mass stairs, screw stairs. Screw stairs can also have from one to several marches and are divided into straight and rotary.
The rotary stairs have certain advantages, as they occupy a smaller area, allowing you to arrange utility rooms or pantries.
Rifle rotary marching stairs are divided into circular, half -turn and quarter -turn, with a rotation angle of 90 to 360 degrees. Marsh stairs with run -in steps are rarely used, as the legs are not convenient for support.
The basis of the supporting part of the screw march staircases can be aunts or kosuurs, depending on the type of fastening of the steps.