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BEAM P
LUS FOR
N
EW
B
UILDINGS
M
ATERIALS
A
SPECTS
(M
A
)
V
ERSION
1.2
M
A
3 P
REFABRICATION
Copyright © 2012 BEAM Society Limited. All rights reserved.
Page 72
3
M
ATERIALS
A
SPECTS
3.1
E
FFICIENT
U
SE OF
M
ATERIALS
M
A
3 P
REFABRICATION
E
XCLUSIONS
None.
O
BJECTIVE
Encourage prefabrication building elements in order to reduce wastage
of materials and quantities of on-site waste.
C
REDITS ATTAINABLE
2
P
REREQUISITE
None.
C
REDIT REQUIREMENT
1 credit when the manufacture of 20% of listed prefabricated building
elements has been off-site.
2 credits where the manufacture of 40% of listed prefabricated building
elements has been off-site.
A
SSESSMENT
The listed building elements (pre-cast concrete) includes:
facades;
staircases;
slabs;
balcony/utility platform;
parapet;
partition walls;
bridge-decks; and
footbridges.
Additional or alternative elements may be included, which the Client
believes to demonstrate a significant contribution to the assessment
criteria. However, the curtain wall/windows shall be excluded from the
assessment.
In order to avoid long-distant transportation, the manufacturing factory
shall be located within 800 km of the site. The Client shall demonstrate
through the submission of contract specifications, drawings and other
supporting documents that the quantities (by weight or volume) of those
building elements fabricated off-site are in accordance with the Code of
Practice for Pre-cast Construction 2003. The assessment shall take into
account the number and quantities of building elements in the building
development that was fabricated off-site and credits will be awarded
where the assessment criteria have been met.
B
ACKGROUND
Prefabrication is the manufacture of sections of a building at the factory
so they can be easily and rapidly assembled at the building site,
improving the buildability of the building. Since the factory fabrication of
building elements is conducted under controlled conditions, it allows for
more efficient disposal of debris and waste. Noise, dust, site traffic and
other environmental nuisances can also be reduced. Interior millwork
and custom metalwork should be detailed to be shop-finished and
installed to the highest degree to limit the need for on-site painting and
finishing work.
The Hong Kong construction industry is continuously under pressure to
raise productivity, reduce costs and improve the quality levels of
constructed facilities. All these requirements are the key drivers for