Scaffolding system for volumes of various shapes

A scaffolding system adapted to be used with volumes of various shapes presenting a bottom and end walls, said system comprising at least a first scaffolding structure comprising:

• a gantry structure comprising at least two vertical poles interconnected to form a gantry, each of said poles having a bottom end;
• pole guiding means adapted to be secured to said bottom of the volume to guide said bottom ends of the poles in rectilinear displacement in a longitudinal direction on said bottom;
• a horizontal main platform defining working floors outside a zone defined by said vertical poles in the direction orthogonal to the displacement;
• main platform guiding means adapted to be secured to said main platform means for guiding said main platform means in vertical translation along said poles, said main platform means having two end edges in a direction orthogonal to the displacement direction of said gantry;
• at least two horizontal auxiliary platforms each defining a working floor, mounted on said main platform means at each end edge thereof to move in horizontal translation relative to said main platform means, each auxiliary platform having an outer edge;
• and
• displacement means for displacing each auxiliary platform separately relative to said main platform between a retracted position in which the outer edge of the auxiliary platform is retracted relative to the outer edge of the main platform, and an extended position in which the outer edge of the auxiliary platform is substantially vertically in register with the outer edge of the main platform, whereby all of the walls of the volume can be reached from a working floor, whatever the shape of the volume.