Bamboo as Scaffolding?

Did you know in the Far East such as India, Hong Kong and China uses bamboo as scaffolding material rather than steel and aluminium? For over 5000 years bamboo has played a significant role in the economic and cultural role of China. Even in Hong Kong today it is common to see bamboo scaffolding wrapping their modern glass and steel structures like a spider web. Not only is bamboo scaffolding durable and robust, it is also economical due to its cheap price and fast construction time. It is much more environmentally friendly than steel since it is a natural material, therefore it doesn’t cause pollution to product and could be disposed effectively through decomposition.

When workers start building they would initially build the scaffold around the site no matter how big or tall the building would be. Bamboo is significantly lighter than metal so no machineries are required to put up. At the end of the project builders will start from the top to dismantle the bamboo skeleton as they prepare to move to another job and recycle the bamboo. Unlike the modern western scaffolding which utilises metal couplers to hold the fittings together, bamboo scaffolding is held together using nylon straps tied into knots as couplers.

There is also something called “Bamboo Metal Hybrid Scaffolding” combining the best features of both components, having the robustness of bamboo with the reinforced safety of metal installations. Metal scaffolding is used in the early stages to build a strong foundation so workers can move equipment and materials around. Than bamboo is used to extend the existing structure to be cost effectively and at the same time it adds little additional weight thus putting less pressure on the foundation. As bamboo is easy to put-up, it gives the material the flexibility to adapt to the dynamic environment of a building site.

Bamboo is also used as a building material. In Japanese architecture, bamboo are often added as a decorative aspect to buildings such as gates, gutters, fountains, window, doors, since in the Far East there has a scarce amount of construction quality timber. In China bamboo has been used to build suspension bridges, bamboos are twisted together to create cables to strengthen the structure. Bamboo can be used as reinforcements to concrete in areas of abundant amount of bamboo, its effectiveness is questionable but it does have the strength to uphold this function. However untreated bamboo can swell from absorbing water from the concert and eventually cracking.

Lastly the Chinese believe bamboo possesses good Feng Shui properties providing the owner with good luck and wealth along with positive energy. I cant make the connection but if it is your cup of tea, go for it!

Scaffolding Boards

  
Scaffpad

Scaffpad

Timber Scaffold boards in the UK must comply with BS 2482. Steel or aluminium decking is used or laminate scaffold boards as well as timber.

 

Scaffolding sole boards are placed beneath the scaffolding if the surface is soft or otherwise suspect. Normally ordinary boards are used but a design called the scaffolding scaffpad which is made from a rubber base with a base plate moulded inside is another option, Scaffpad works well on uneven ground because it adapts to any ground where sole boards would split costing more money to replace.

 

 

 
Scaffolding Hoop Irons

Scaffolding Hoop Irons

Scaffolding Boards provide a platform surface to support users of the scaffold. They are seasoned hardwood, they come in three thicknesses (38 mm (usual), 50 mm and 63 mm) are a standard width (225 mm) and are a maximum of 3.9 m long. The scaffolding board ends are protected by metal plates called scaffolding hoop irons or sometimes scaffolding nail plates.

Scaffolding Couplers

 

Scaffolding Couplers

Scaffolding Couplers

 

Scaffolding Couplers are the fittings which hold the tubes together. There are three basic types: scaffolding right-angle couplers, scaffolding putlog couplers and scaffolding swivel couplers. To join tubes end-to-end scaffolding 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 include base plates, ladders, ropes, anchor ties, reveal ties, gin wheels, sheeting, etc.

 Despite the metric measurements given many scaffolders measure tubes and boards in imperial units. With tubes from 21 feet down and boards from 13 ft down.

 

Scaffolding Tubes

Scaffolding Tubes

Scaffolding Tubes

Scaffolding Tubes are made of either aluminum or steel. Generally if they are steel they are painted either ‘black’ or they are galvanised. The scaffold tubes come in a variety of lengths and a standard diameter of 48.3 mm. (1.5 NPS pipe). Scaffolding tubes are generally bought in 6.3 m lengths and can then be cut down to certain typical sizes.

The main difference between the two types of scaffolding tubes is the lower weight of aluminum scaffolding tubes (1.7 kg/m as opposed to 4.4 kg/m) and also a greater flexibility. Which means the advantage of steel over aluminum is its greater resistance to force.