Is it illegal to put beams on tower cranes?

Tower crane can put beam, and it is easier, faster and safer for tower crane to put beam. However, we should pay attention to safety at work to avoid safety accidents.

Beam, a member that bears a transverse load perpendicular to the axis. It is an important load-bearing component in engineering structures, such as beams of houses, keels of ships, girders of aircraft wings, girders of cranes, etc. Beam is the name of a large wooden member that supports the roof structure of a house. It is the main horizontal component that bears the weight of the roof in wooden buildings (the perspective of the section is horizontal, and if the perspective is opposite to the doors and windows, it is vertical). Generally, the upper beam is shorter than the lower beam, so that the roof truss is formed by overlapping layers, and the lower beam is often placed on the stigma or combined with the bucket, thus forming a complete framework.