Projector columns also include protective stairs. The galvanized projector columns are generally at 14 metres high and are produced by means of a ladder that is assembled to the top of the projector column. This ladder is formed with the help of sheet irons.
There is a distance of 50 cm per sheet iron. A man will be able to climb to the top of the projector with the help of a ladder made of these iron sheets. The ladder of sheet iron is very important in terms of security. The annexes that are used in order to assemble a projector are also appropriate to assemble a projector column including a portable ladder.