Waste reduction final report -4 - Test Input

Figure 7 - Processing of C&D Waste into RCA
1. Stockpile of
C&D waste
2. Crushing into
smaller sizes
3. Removal of foreign materials
6. Stockpile of RCA 5. Further crushing
& screening
4. Removal of
ferrous metals
Case Study – Tampines Concourse
The Tampines Concourse Building shown in Figure 8, held the distinction as being the first
carbon-neutral building in Singapore and it has also achieved the BCA Green Mark Gold Plus
Award in 2009. Designed and built with environmental sustainability in mind, the 15 years
leasehold building offers a total of 105,000 square feet of eco-friendly office space across 3
storeies.
The carbon neutrality of the development or net zero carbon emission was achieved through a
mix of internal and external reductions. Internal reductions were the carbon emission savings
from actions within the organization including construction materials and processes, and
building operations. External reduction known as ‘carbon offsets’ was achieved by
purchasing an amount of CO 2 equivalent saved from an accredited project overseas. In the
first phase, the developer had off-­‐set the construction and estimated first year of tenancy
carbon emissions which totalled about 6,750 tonnes of CO 2 emissions 21 . The sustainable
features used in the project are highlighted below.
- Designed for Energy Efficiency
It is the first building in Asia that utilizes a pre-­‐cooled mechanical ventilation system for
indoor cooling. Coupled with facade greening area of 2,504m 2 and green roof system of
1,921m 2 , these vertical and horizontal greenery helps to mitigate solar heat gain in the
building. The building also optimized the daylight penetration at atrium and lift lobbies with
natural day-­‐lighting system via specially-­‐designed light shaft and sun pipes. Lastly, the
21 The estimated emissions have been measured in compliance with the internationally recognized
Green house Gas Protocol criteria as defined by the World Business Council for Sustainable
Development and the World Resource Institute (WBCSD/WRI Protocol). By complimenting internal
reductions with external ones, the building is able to reach net zero carbon today.
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