RCC Dog-legged staircase, the ensuing flights mainly lift in contrary directions. The two flights in the plan are not isolated by a well. A landing is delivered compared to the level at which the direction of the flight is regulated.

Staircase Terminology | Staircase Component Names

Method for designing a Dog-legged Staircase
The stairs are divided into the following two types based on the direction along which a stair slab spreads out.
1. Stairs spanning horizontally
2. Stairs spanning vertically
Stairs spanning horizontally: In this type of stairs, walls deliver adequate support to both sides.
Dead load of a step = 0.5 x T x R x 25
Dead load of waist slab = b x t x 25
Live load = LL (KN/m2)
Floor finish = suppose 0.5 KN/m

Stairs spanning horizontally:
In this case, the beam is sustained by both top and bottom of the flights.
Self-weight of a step=1xR/2×25
Self-weight of waist slab=1xtx25
Self weight of plan=1xtx25 [(R2+T2)/T] Live Load=LL (KN/m2)
Floor finish = suppose 0.5 KN/m

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