In the case of a building scaffold, each upright (4) is supported on a rung (3) of a ladder (2) which leans against the wall (1). The support (5) for the planks (6) lies with its section directed away from the upright (4) on a rung (3), located at the same height, of the ladder (2) and is detachably connected to said rung. The uprights (4) and the supports (5) comprise a metal rail having a rectangular cross-sectional profile. <IMAGE>
