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Scaffolding
Process, Technology, Plant, Market, Consultants, Report,
Product, Safety, Standard, Company Profiles
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General
- The
scaffolding first appeared in the work of Wood, Bruner, and Ross
as a vivid way to explain how mothers assist young children in
performing new, complicated tasks, like walking, tying a shoe, or
completing a puzzle.
- Scaffolding is a temporary framework
used to support people and material in the construction or repair of
buildings and other large structures.
Process
- The design of the
scaffold shall take into account the following: The strength,
stability and rigidity of the supporting structure; The handling
normally associated with scaffolding; The safety of persons engaged in
the erection, alteration and dismantling of the scaffold; The safety
of persons using the scaffold; The safety of persons in the vicinity
of the scaffold.
- When scaffolding is
designed, it shall be designed for the most adverse combination of dead
loads, live loads and environmental loads that can reasonably be expected
during the period that the scaffold is expected to be in service.
Technology
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The mobile phone could act as a bridging or scaffolding
technology in this learning process because people with low computer
literacy, especially in developing countries, are more likely to own a
mobile phone than a personal computer
- The use of instructional scaffolds such as graphic organizers is
particularly crucial in immersion settings where what content learners are
required to process often represents a real cognitive as well as
linguistic challenge.
- The development of the technology for producing
a 3D high-precision bio-scaffold for tissue regeneration has two basic
requirements: a bio-scaffolding technology that can efficiently
differentiate certain cells into specific tissues as desired, and
materials technology to secure suitable biocompatible, biodegradable
materials.
Market
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The use of scaffolding varies widely from contracts of
below £1,000 providing, for example, working access to a house, to
contracts of several million pounds, often of several years
duration, providing access
to large industrial or petrochemical sites.
Estimates we have seen for the black economy element of
the scaffolding market range from £25 million to £80 million, the
equivalent of some 6 to 18 percent of our estimated size of the
scaffolding market.
Report
- Workers’ health and safety
representatives from several construction sites reported instances of
cracked welds in prefabricated scaffolding aluminum stair units, and
expressed their concerns to Work Safe that this may compromise their
structural integrity.
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Each year, more than 60
workers are killed by falls from scaffolds, about 1 in 5 of the fatal
falls in construction. Of these, about 10 deaths per year are from
suspension scaffolds, and the rest mostly supported scaffolds.
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Scaffolding collapses can
be deadly and can result in multiple fatalities for construction
workers. Unlike many other types of construction accidents, they can
also affect the general public, and scaffolding collapses frequently are
covered by local newspapers and TV.
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