Answer:
The simplest form of a concrete stairway is a staircase made up of inclined, reinforced concrete slab. It is supported at its ends by beams, and steps are formed on its upper surface.
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Answer:
The simplest form of a concrete stairway is a staircase made up of inclined, reinforced concrete slab. It is supported at its ends by beams, and steps are formed on its upper surface.