It is difficult to apply a ready-made staircase with a height of about 3m.
Currently, it is a method of locally manufacturing by welding or assembling after external manufacturing.
Prefabricated stairs are applied as there are many places where welding is not possible due to the risk of fire and working conditions.
In the past, stairs designed using columns were applied.
This staircase is a straight staircase that can be constructed without erecting columns.
Non-welding prefabricated stairs applied to existing construction