What should be noted during the design and assembly of scaffolding?

The steel trusses are first assembled on the ground according to the design sheet count and grouped and connected. The positions of each group of trusses are marked with paint on the I-beam at the designed spacing. Then, using a 20-ton crane, the connected trusses are lifted into place in the order of center first, then both sides, and secured to the beam with homemade U-shaped clips. The trusses form a certain unit of steel frame, which can be used to assemble various components and equipment. The dimensions of the trusses are generally 3m x 1.5m. The trusses are also known as "assembly-type highway steel bridge," originally named the "321 Highway Steel Bridge." It is China's war reserve highway steel bridge. The "321 Highway Steel Bridge" produced in China is similar to the British "Bryce Bridge," with the same main structure, but different dimensions; the Bryce Bridge is in British measurement, while the "321 Highway Steel Bridge" is in metric.