Cast-in-place reinforced concrete stairs refer to the stairs that are cast into a whole by stair sections, platforms and platform beams on site, with good integrity and strong seismic capacity. According to the different structures, it can be divided into two types: slab stairs and beam stairs.

Slab staircase: it is a sloping slab, with both ends supported on the platform beam, and the platform beam is supported on the brick wall.

Beam stairs: inclined beams are arranged on both sides of the stair section, and the inclined beams are placed on the platform beams. The load is transmitted from the pedal to the inclined beam and then from the inclined beam to the platform beam.