The scaffolding design features when compared with general structural design:

Big variable of the load bearing capacity: the coupler joints belong to semi rigidity property and the rigidity of the joints have to do with the coupler quality, the installation quality and their joints property can be influenced by too much variable.

The elements of the scaffolding have many defects in the beginning, such as bending, erosion, mis-connection or deviation of the central load bearing capacity.

The major load bearing level means the working platform, the transverse structure and the longitudinal structure. The working platform is the level which bears direct working load which will be passed by the scaffolding planks to the ledgers and then to the standing tubes.

The transverse structure is made up of standing tubes and ledgers which are the major parts to bear and pass the rectangular working

load and they are the major working load bearing parts. The longitudinal structure is to improve the overall stability of the scaffolding body.