Mostly used to gain access to the cable room of engineering rooms. The use of a fixed staircase increases safety when working in engineering rooms. Through a correct choice of material, the stairs will continue to be used for a long time during possible emergencies such as fire.
Whole stage is hot-dip galvanized so that it is a durable aid in the aggressive environments in which these are often placed. Positioning often takes place in consultation with the manager of the room. See drawing for further details.