hong kong bamboo scaffolding
original content
jul 03, 2009
hong kong bamboo scaffolding


bamboo has long been used as an assembly material in china, particularly hong kong,
because of its versatility. one of the most interesting applications of the wood is its
structural
function for scaffolding. extremely eco-friendly and
cost-effective resource, it continues to
be
used for this purpose because it is durable enough to support the
weight of builders,
their equipment and materials, but is lightweight itself. unlike typical metal scaffolding,
bamboo can also be cut and tailor-made to suit
any contour of construction – it can be configured
into a variety of shapes and follow irregular architectural features of a building,
and takes very little time to build-up. it is light and easily
transportable to other sites
and no machinery is required to assemble
the scaffold and put it in place.
when one job draws to a close, bamboo can easily be recycled
and used for another project.


a high-rise is encased in double-layer scaffolding
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double-layered scaffolding consists of a single outer layered scaffold and an inner layer of posts
and ledgers (horizontal limber which is fastened to the vertical uprights of a scaffold)
which are erected inside. between the two layers, short poles or transoms (crossbar pieces)
are used to support timber planks that form working platforms.


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the main types of bamboo which are used for the purpose of scaffolding are mao jue and kao jue.
when using the wood it needs to be completely dried out and free of any cracks or rot.
the mao jue variety is the primary component of a scaffolding structure.
it is used for vertical and diagonal members and maintains at least a 70 mm nominal external diameter.
kao jue is used for vertical and horizontal members and are at least 45 mm in their external diameter.



a look at the binding methods used to hold the bamboo components together
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the bamboo is arranged to provide elevated stages for construction workers
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netting and nylon sheeting are used to stop debris from falling on people below

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a worker climbing a grid-like assembly of bamboo
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working freely
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a building clad in green netting and bamboo scaffolding stands amongst the hong kong skyline
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working platforms run around the circumference of a building
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a platform extends from a building
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platform scaffolding consists of closely spaced horizontal bamboo poles that result in
large working spaces for construction activities. rakers, which are inclined members,
are used to reduce the number of posts needed. this means there is little obstruction to
pedestrians and vehicles underneath.



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an example of truss-out scaffolding which is used for small repairs
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truss-out style scaffolding is generally used for minor work and relies on the building for support.
they are used in locations where it is not practical to erect a full scaffold structure from the ground.
since they are smaller and function as light duty scaffolds, kao jue bamboo is used.
generally, these types of structures should be no higher than 6 metres.



truss-out scaffolding uses the side of the building for structural support
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bamboo framework
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the complex framework
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bamboo being passed up to workers via harness and sack
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different lengths of bamboo being delivered
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assembly continues on the double-layer scaffolding
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a portion of an apartment is decorated in truss-out scaffolding
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bundles of bamboo waiting to be used
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they are built in such a way to minimize obstruction to sidewalks and streets below
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creating a canopy over the sidewalk
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bamboo scaffolding can be adapted to different shaped buildings like this curved façade
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the versatile material is also used as a structural frame for houses and buildings
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bamboo lined-up on a roof
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intricacy of the binding techinques
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the frequency in which these structures should be inspected should not exceed more than 14 days.
they would need to be monitored more closely in the event or arrival of any tropical cyclones
or strong winds. in hong kong and other parts of southern china, bamboo
scaffolds are one of the
few traditional building systems which have
survived through the practical experiences
of scaffolding practitioners over generations. thus, the safety and
effectiveness of the bamboo scaffolds
depends primarily on the
individual skilled workers. trade knowledge is passed down to
younger workers through an apprenticeship system and on-the-job learning.

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