A stair is a series of steps which is arranged to connect different floors of a building.
Stairs are provided in all types of buildings, which are of different types that are designed and used based on the location and usage.

Types of Stairs
Stairs are classified into two different types - one is based on the shape, and the other is based on the materials used.

Types of Stairs on the Basis of Shape
Based on shape, different types of stairs which are in general use are discussed below:

Straight Stairs
Long, straight stairs are provided only if the staircase hall is long and narrow. These stairs are commonly used as an emergency exit from buildings such as cinema halls.

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