The Name of The Scaffolding Bar
1. Upright tube: it is a vertical bar that is perpendicular to a horizontal plane in a scaffolding. 2. Outside upright tube: it is the upright tube that is away from one side of the wall, or a single row of pole. 3. Inner upright tube: it is the upright tube that close to one side of the wall. 4. Angle bar: the pole at the corner of the scaffolding. 5. Duplex vertical pipe: two parallel to the pole. 6. The main pole: it is the pole that directly withstand the top load in duplex vertical pipe. 7. Deputy pole: it is the pole that shares the main pole load pole in duplex vertical pipe. 8. Horizontal tube: horizontal bar in scaffolding. 9. Longitudinal level bar: horizontal bar set vertically along the scaffold. 10. Transverse horizontal tube: Horizontal bar set horizontally along the scaffold. 11. Bottom horizontal tube: the horizontal bar that is close to the ground and connects the base of the pole. 12. Longitudinal bottom horizontal tube: Sweep bar set vertically along the scaffold. 1...