Step: A step is normally a triangular shaped part of a staircase which sits on an inclined slab (Waist slab).
A step also has two parts-Riser and Tread.
Riser: Riser is the vertical portion of steps. Normally, the height of a riser is 6 inches.
Tread: It is the horizontal part of a step.
The width of a tread is normally kept 10 inches.
Landing: It is a horizontal slab which is provided in between the flights of a staircase. It is mainly provided for changing moving direction of a stair. It also gives users comport to climb.
Flight: A staircase normally has two flights. One is below the landing and another is above the landing.
The flight below the landing is called first flight and the flight above the landing is called 2nd flight.
In this Video Lecture you are able to Learn Design of staircase and concrete estimation
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