Are there any steel bars on the stairs?

1, if it is a concrete staircase, there must be steel bars, which are equivalent to the skeleton and concrete is equivalent to the meat. Only meat has no skeleton, steel bars and concrete work together, and it is unsafe to lack steel bar structural system. The stairs seem to be inclined. In fact, stairs can be regarded as an inclined concrete floor for safety, and the reinforcement is exactly the same as that of concrete floor, that is, horizontal stress reinforcement+distributed reinforcement+negative bending moment reinforcement.