TUESDAY, APRIL 5, 1988
HAD
MR LINDEYER POINTED OUT THAT PRECASTING WALLS OF THAT SIZE OPENED A NEW FIELD IN DESIGN, FREE OF THE USUSAL RESTRICTIONS IMPOSED BY TRADITIONAL CAST IN-SITU PRACTICES.
"
AS SHOULD BE EXPECTED IT IS MORE EXPENSIVE BUT NOT ΤΟ A PROHIBITIVE LEVEL AS THERE ARE SIGNIFICANT SAVINGS SUCH AS ELIMINATION OF ON-SITE FORMWORK AND LABOUR COSTS.
+t
"EXPERIENCE HAS SHOWN THAT THE GREATER QUALITY CONTROL ACHIEVES A BETTER QUALITY CONCRETE AND THERE IS LESS WASTAGE OF TIME, HE SAID.
HE ADDED THAT THE LANDSCAPE UNIT HAD LONG CONSIDERED THE USE OF COLOURED CONCRETE AS AN ADDITIONAL TOOL TO SOFTEN THE APPEARANCE OF CONCRETE STRUCTURES.
ין
FINISHES CONCRETE
THERE ARE, OF COURSE, MANY WAYS IN WHICH EXPOSED CONCRETE SURFACES ARE FINISHED IN OTHER MATERIALS, BUT APPLIED USUALLY HAVE A SERVICE LIFE THAT IS MUCH SHORTER THAN THE ITSELF. THEY THEREFORE TEND TO INCREASE AN OWNER'S MAINTENANCE COMMITMENT.
MR LINDEYER SAID THE ROUSSET METHOD SEEMS TO BE THE ONLY EFFECTIVE TECHNOLOGY CURRENTLY AVAILABLE TO SURMOUNT THE PROBLEMS OF APPLYING COLOURS AND ACHIEVING THESE SPECIAL EFFECTS ON CONCRETE WALLS.
THE LANDSCAPE UNIT GAINED SOME PREVIOUS EXPERIENCE WITH COLOURING CONCRETE 'HEN DEVELOPING AND TESTING CONCRETE UNIT PAVERS, WHICH ARE CURRENT.Y REPLACING IN-SITU CONCRETE ON FOOTPATHS THROUGHOUT THE TERRITORY.
"THESE PRE-CAST UNIT PAVERS LAID ON A SAND BED CAN BE REMOVED MANUALLY, THUS MAKING ROAD EXCAVATIONS EASIER AND SOLVING THE PROBLEM OF NOISE NUISANCE CAUSED BY JACKHAMMERS, HE SAID.
..
"IT WAS THE FIRST TIME THAT COLOURED CONCRETE WAS INTRODUCED ON A LARGE SCALE IN HONG KONG. UNITS
BY THE ARE MANUFACTURED CORRECTIONAL SERVICES DEPARTMENT AND THE PRIVATE SECTOR IN A RANGE COLOURS UNDER FACTORY CONTROLLED CONDITIONS.
THF "IT IS QUITE COMMON TODAY TO FIND
FOOTPATH PAVED IN INTERESTING PATTERN WHICH DISPLAYS VARIATION IN UNIT SIZES AS WELL COLOURS."
OF
AN
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MR LINDEYER SAID COLOUR ALSO OFFERED AN OPPORTUNITY TO PEDESTRIAN SAFETY.
IMPROVE
RUN-INS
ΤΟ
THE "FOR INSTANCE, IN THE TSIM SHA TSUI EAST AREA
STATION CARPARKS AND FIRE
ENTRANCES ARE PAVED WITH RED COLOURED FOOTPATHS OF THE CONCRETE UNITS WHICH STAND OUT IN A BROWN COLOURED SAME TYPE," HE EXPLAINED.
PEDESTRIANS OF THE
"VARIATION IN COLOUR AS
SHARED USE
OF
THAT
WELL AS LAYING PATTERN WARNS SECTION OF FOOTPATH AND
POTENTIAL, DANGER FROM VEHICLES.
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