1. The settle of the diagonal tubes:

Use 5000mm steel tubes as diagonal tube material and fully covered on the vertical plan.

Requirements of the vertical scaffolding plan surface: the shape of them all shall be in the same size and the tubes shall be perpendicular and the crossing connection height shall be the same.

2. The diagonal tube space:

According to the longitudinal space of the standing scaffolding tubes, for the scaffolding height over 35m, the diagonal tubes shall be set in different directions every 7000mm. For the one whose height below 35mm, the tubes shall be set every 8500mm on different directions.

If the scaffolding’s vertical face has a longitudinal space less than 7000mm, there shall set a zigzag shape diagonal tube.

3. The extension of the diagonal tubes.

The overlap connection length shall be no smaller than 980mm and shall use two scaffolding double couplers to fix and fasten. And the space from the couplers to the connection head shall be no smaller than 980mm.