use of stairs

The staircase is part of a multi-story building that serves to connect the circulation between floors of high rise buildings by walking up or down using a trap (rung). The ladder consists of two types:

1. The main staircase
   The main staircase is a ladder that functions for the circulation of people on foot as well as to the main trajectory of inter-storey building level in daily condition because it becomes the main circulation, so the main staircase must meet the comfort requirement of wear for the ride or down which is not tiring and endanger the wearer.

'2. Emergency stairs
The emergency ladder is a ladder used to evacuate or rescue occupants of the building from the effects of hazards.

The choice of the ladder type suitable for a particular state depends on several factors, namely:

1. Uses of stairs
2. open space for the ladder built
3. the desired up and steep size
   4.the most memorable and economic form.

The choice of the ladder type suitable for a particular state depends on several factors, namely:

1. Uses of stairs
2. Space openings for the stairs are fostered
3. Size up and steep desired
4. The most memorable and economic forms.

Types of staircases Stair construction can be divided into four main types:

1. Stairs running straight
2. Stairway tribes
3. Half staircase
4. Staircase geometry