Ladder hotel

The width of fire stairs shall not be less than 1.4m, and the number of running steps shall not be greater than 18. The total number of steps is not important.

If it is standardized, it depends on whether you are high-rise or multi-storey.

For high-rise buildings, see Code for Fire Protection Design of High-rise Civil Buildings, and for multi-storey buildings, see Code for Fire Protection Design of Buildings.