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The chief difference between the two types of tubes is the lower weight of aluminium tubes and also a greater flexibility and so less resistance to force.

Extensive scaffolding on a building in Manhattan, New York provide a working surface for users of the scaffold. The board ends are protected by metal plates called hoop irons or sometimes nail plates. Timber Scaffold boards should comply with the requirements. As well as timber, steel or aluminium decking is used or laminate boards. There are sole boards which are placed beneath the scaffolding if the surface is soft or otherwise suspect, although ordinary boards can be used,another design called the scaffpad is another solution as it is made from a rubber base with a base plate moulded inside, these are great to put on uneven ground because they adapt to any ground where sole boards would split costing more money to replace.

A short section of steel scaffold pole.Couplers are the fittings which hold the tubes together. The most common are called scaffold couplers, there are three basic types: right-angle couplers, putlog couplers and swivel couplers. To join tubes end-to-end joint pins (also called spigots) or sleeve couplers are used, or both together. Only right angle couplers and swivel couplers can be used to fix tube in a 'load bearing connection'. Single couplers are not load bearing couplers and have no design capacity.

Other common materials lnclude base plates, ladders, ropes, anchor ties, reveal ties, gin wheels, sheeting, etc.

(2) Basic scaffolding

The key elements of a scaffold are standards, ledgers and transoms. The standards, also called uprights, are the vertical tubes that transfer the entire mass of the structure to the ground where they rest on a square base plate to spread the load. The base plate has a shank in its centre to hold the tube and is sometimes pinned to a sole board. Ledgers are horizontal tubes which connect between the standards. Transoms rest upon the ledgers at right angles. Main transoms are placed next to the standards, they hold the standards in place and provide support for boards; intermediate transoms are those placed between the main transoms to provide extra support for boards. In Canada this style is referred to as "English". "American" has the transoms attached to the standards and is used less but has certain advantages in some situations. Since scaffolding is a physical structure, it is possible to go in and come out of scaffolding.

There are cross braces to increase rigidity, these are placed diagonally

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