Tube and Coupler Scaffold is a scaffold parts which is constructed out of steel tubing. Which serves as posts (referred to as standards), runners (referred to as ledgers), bearers (referred to as transoms), and braces. A tube and coupler scaffolding parts consist of a base which supports the posts. It has specially designed scaffold couplers to connect the various parts of the scaffolding.
Underhung (Slung or Suspended) scaffolding parts is a scaffold which is suspended by wire ropes (referred to as cables) of fixed lengths. This type of scaffolding can also have rigidly attached scaffold tubes and load bearing couplers. Which are attached to an overhead structure directly above (not outrigger beams) supporting it, which has a fixed work platform.