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Prefabricated Modules |
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The capsule
dimensions were 2.5 m x 4 m x 2.5 m. The capsules were fabricated at the factory
and fitted out including utilities, interior fittings etc., and were attached to
the concrete towers. Each capsule was attached to the shaft by 4 high-tension
bolts and were independently cantilevered from the shaft so that any capsule may
be easily removed without affecting the others. The form of the capsule was
simple and the major structure was an all-welded lightweight steel-truss box.
The exterior was covered with galvanized, rib-reinforced steel panels. After
processing, the panels were coated with rust-preventative paint, and finished
with a coat of a glossy spray, Kenitex. |
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The Cores |
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They were
made of a steel frame and reinforced concrete, rigid-frame structure. From the
basement to the second floor ordinary concrete was used, but above these levels
lightweight concrete was used. Shuttering consisted of large panels the height
of a single storey of the tower. In order to make early use of the staircase,
precast concrete was used in the floor plates and the elevator shafts. By using
a policy whereby steel-frame work was done for two days and precast concrete
work on the following two days, the designers were able to prepare a completely
operational staircase by the time the frame-work was finished. Construction of
the elevators on-site was shortened by incorporating the 3D frames, the rails,
anchor indicator boxes, etc., in the precast concrete elements and by employing
prefabricated cages. |
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Construction Phases |
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The
construction process included 2 categories: |
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- On-site
construction included the 2 towers
and their energy-supply systems and
equipment. |
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- Off-site
fabrication: factory production of
the capsule
parts and assembly of the
parts. |
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