Traditional Culture Encyclopedia - Traditional stories - What is a light beam?

What is a light beam?

Cross beam refers to the beam in the superstructure, which is arranged transversely along the axis of the bridge and supported on the main load-bearing members.

Beams, columns and laminated plates together form a set of shelves. Common in light shelves, medium shelves and heavy shelves, the beam is mainly composed of two parts: the main body and the column card.