Types of Stairs

The stairs can be built with, concrete masonry, wood or with cast iron. Because of the danger of fire wooden stairs are not safe. However, to access to small areas in the upper floors they are used in unimportant buildings. Commonly Cast iron or steel stairs in the spiral forms were used to reduce stair case area. In numerous residential buildings masonry stairs are also used. Commonly Reinforced concrete stairs are very used in all types of buildings.

Stairs may be classified based on the shapes as following:

(1) Straight stairs

(2) Dog legged stairs

(3) Well or open-newel stairs

(4) Geometrical stairs

(5) Spiral stairs

(6) Turning stairs.