Scaffold device and assembly method for scaffold device

A method of assembling a scaffold device, the scaffold device provided with:

• a frame having a pair of longitudinal beams, a pair of transverse beams, and four coupling members disposed between each end portion of the longitudinal beam and each end portion of the transverse beam and rotatably connecting the longitudinal beam and the transverse beam on the same plane;
• two or more intermediate beams spanning between the longitudinal beams at a predetermined interval;
• and
• a scaffolding plate spanning between the longitudinal beams and supported by at least one of the intermediate beams, the number of scaffolding plates being one greater than the number of intermediate beams installed;
• wherein:
• the method of assembling the scaffold device comprises:
• a step of respectively connecting an other end of a pair of longitudinal beams for expansion to which a coupling member for expansion is attached to one end to each coupling member disposed on one side of the frame;
• a step of spanning an intermediate beam for expansion between the pair of longitudinal beams for expansion, repeating a step of spanning a scaffolding board for expansion between the pair of longitudinal beams for expansion while supported by at least the spanned intermediate beam for expansion the same number of times as the number of intermediate beams to be installed in one frame, and spanning a transverse beam for expansion between the coupling members for expansion;
• and
• a step of spanning another scaffolding plate for expansion between the longitudinal beams for expansion while supported by at least the transverse beam for expansion.