1. Layout

1.1 Staircase layout

To make it easier to understand the drawings, which represent structures in plan that develop in space, it's useful to recall a few common drawing conventions.

Standard staircase plans assume a horizontal cross-section at one meter from the finished floor of the level represented.

If the staircase only runs between two levels (as in the case of single-family homes), the steps above the cross-section are generally shown as dashed lines.

In the case of multi-storey buildings, the flights are generally superimposed. The difference in level of a storey is represented by two interrupted mixed lines.

In the following drawings, the staircases are shown without the shaft and...