| Assembly |
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The simplicity of Aluminium Formwork and the repetitive nature of the
assembly process make it possible to accurately programme
construction sequences and thus cycle times well in advance. In
addition this enables unskilled labour to work with the Formwork
therefore reducing the burden on skilled labour when this is in
short supply.
On leaving the factory all panels are clearly labelled to
ensure that they are easily identifiable on site and can be smoothly
fitted together using the formwork modulation drawings.
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| Pin and Wedge System |
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| The panels
are held in position by a simple pin and wedge system that
passes through holes in the outside rib of each panel. The
panels fit precisely, simply and securely and require no
bracing. Buildings can be constructed quickly and easily by
unskilled labour with a hammer being the only tool required.
Once the panels have been numbered, measuring is not
necessary. As the erection process is manual, tower cranes are
freed up and can concentrate on other handling operations. The
result is a typical 4 to 5 day cycle for floor to floor
construction. |
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| Quick Strip Prop Head |
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| One of the
principal technical features which enables this speed to be
attained using a single set of formwork panels is the unique V
shaped prop head which allows the 'quick strip' to take place
whilst leaving the propping undisturbed. The deck panels can
therefore be reused immediately. |
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| Speed and Quality |
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| The in-situ construction of all walls and
partitions reduces the requirement for follow-on wet trades.
The concrete surface finish produced with the aluminium forms
allows achievement of a high quality wall finish without the
need for extensive plastering. Doors and windows are formed in
position, with this high degree of precision items such as
door and window frames can be directly installed on site with
minimal re-sizing required. |
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High quality Aluminium Formwork panels ensure
consistency of dimensions. On the removal of the Formwork mould, a high quality
concrete finish is produced to accurate tolerances and
verticality. The high tolerance of the finish means that no
further plastering is required. Typically a 3mm to 4mm skim
coat is applied internally prior to finishing and a 6 mm build
up coat prior to laying
tiles.
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| Contact of Supplier
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| VSL
Hong Kong Limited
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| 3/F
Stelux House, 698 Prince Edward Road East, San Po Kong, Kowloon,
Hong Kong.
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| Tel:
(852) 2590 2288
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| Fax:
(852) 2590 0290
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| Formwork System Description |
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| The basic element of the
Formwork is the panel which is an extruded aluminium rail
section, welded to an aluminium sheet. This produces a
lightweight panel with an excellent stiffness to weight ratio,
yielding minimal deflections under concrete loading. Panels
are manufactured in the size and shape to suit the
requirements of specific projects.
The panels are made
from a high strength aluminium alloy with a 4mm thick skin
plate and a 6mm thick ribbing behind to stiffen the panels.
The panels are manufactured within factory environment. Once
assembled they are subjected to a trial erection in order to
eliminate any dimensional or on site problems. |
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| Formwork Structure |
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| Architectural details are
incorporated during the design and manufacture of the aluminium panels
and can be designed for any condition such as bay windows, stairs, balconies and
special architectural
features. The accurate regular dimensions achieved with the
aluminium
formwork system enable pre-fabrication of cast in items, door and
window frames and electrical and mechanical components. |
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Timber
Formwork |
System
Formwork |
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Material
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Timber and Plywood
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All
Aluminium
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Durability
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20
times
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120-150
times
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Wastage
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Yes
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No
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Quality
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Subject
to Workmanship
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Good
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Labour
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Skilled
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Unskilled
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Flexibility
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More
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Less
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Cost
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HK$100-140/m2
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HK$140-180/m2
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