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Main Contractor |
: |
Shimizu Corporation |
|
Building Height |
: |
>130m, Typical Floor
Height = 3.1m |
|
Floor Cycle |
: |
8 days |
|
Project Details |
: |
Residential Building, 3
Blocks x 43 storeys |
|
System |
: |
RailScaf & RailScreen, Crane Climbed |
|
Period |
: |
2007 |
|
Location |
: |
Singapore |
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Photo Reference |
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Click on the images below to view a larger-sized image |
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Featuring 3 blks of 43 sty
apartment buildings (545 apartment units), the RiverGate
project has a bold and unique architectural design which
employs a cast-in-situ construction method with a 8 days
planned floor cycle.
Because it was designed to be
different, one of the main challenges of the project was
to construct the complex façade which consists of
varying length and extensions of bay windows, planter
boxes, balconies & ledges. The balconies extends from
the building line from 1.50m to 2.40m and at certain
floor levels, the balconies are replaced by planter
boxes which extends up to 0.90m.
Shimizu decided against using a
pre-cast method due to the non-typical façade elements
and hence, the in-situ method which was formed by
man-handled aluminum paneled formwork.
Such a method requires an enclosed
perimeter scaffolding system, allowing the related
tradesmen to access and work safely on the outside of
the building. However, such scaffold systems has to
overcome the alternating & protruding facades at the
different floor levels and also to keep up with the
floor cycle.
Due to inherent safety issues on
traditional scaffold frame systems and the tight labor
conditions, ehub’s patented
RailScaf
(Rail-Climbing scaffold system) &
RailScreen was
considered and chosen to surround and fully enclose
along the building perimeter.
Due to the flexible nature of the
RailScaf system,
platform extensions could be easily incorporated into
the system and hence solving protruding façade elements.
The platforms were designed to be retracted when a
façade element appeared and closed when it becomes
nonexistent. Casting of the 2.4m extended balcony poised
to be another hurdle when there was no support at the
lower floor level. Thus, Ehub designed for a special
platform which would support the
RailScaf system as
well as to support the concrete casting of the balconies
segments.
In all, a 190 modular
RailScaf units
varying from 1.5m to 6.0m long were in use for all 3
blocks. A gang of 15 workers could assemble & install
4-5 RailScaf units a
day. Each unit were climbed to the next level safely
that required 2 men and consumed less than 5 minutes of
crane time.
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