TABLE OF CONTENTS - The Professional Green Building Council

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Theme B: Creating a livable, healthy and environmentally viable citiesCOMBINED LCA AND LCC STUDY – FROM HOUSING INHK TO OTHER BUILDING ARCHETYPES IN PEARL RIVERDELTADR. ALEX AMATO 1 AND MR. FELIX WONG 21 Sustainability Officer, Estate Office, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China2 PhD Candidate, Senior Research Assistant, Dept. of Architecture, The University of Hong Kong, PokfulamRoad, Hong Kong SAR, ChinaABSTRACT: A combined Life Cycle Assessment (LCA) / Life Cycle Costing (LCC) Study for a40-storey standard HKHA (Hong Kong Housing Authority) public rental housing block - NewHarmony Block (Option 2) (NHB) was completed in 2004. The study was conducted by aconsortium comprising of the University of Hong Kong, Department of Architecture, DavisLangdon & Seah Management Ltd., and the Business Environment Council. The objective of thestudy quantitatively measured following ten environmental impacts generated and life cycle costsincurred from the 155 functional units of the NHB block in the whole building life-cycle perspective,including (1) initial stage including raw material extraction, building material manufacturing andtransportation stage; (2) construction; (3) building operation; (4) repair and maintenance, and (5)disposal stage: Energy (MJ); Resource depletion (kg Sb eq.); Water consumption (m3); Waste (kg);Climate change (kg CO2 eq.); Acid rain(kg SO2 eq.); Photochemical smog (kg C2 H4 eq.); Ozonedepletion (kg CFC-11 eq.); Toxicity to humans (kg toxic eq.); Toxicity to ecosystems (kg toxic eq.)The LCA and LCC measurement has been extended to office, hotel, retail, carpark and externalwork in Pearl River Delta. This paper will briefly discuss the findings from 2004 to 2007.Keywords: holistic approach, Life Cycle Assessment, Life Cycle Costing, building materials1. INTRODUCTIONThe University of Hong Kong (the greenroom team, Department of Architecture),Davis Langdon & Seah Management Ltd (DLSM), and Business EnvironmentalCouncil (BEC) completed a combined Life Cycle Assessment (LCA) and LifeCycle Costing (LCC) decision-support tool called Tool for Assessment ofSustainable Construction (TASC). The tool is capable of measuring the followingten environmental impacts and whole-life financial implication of buildings fromthe whole life cycle perspective, including (1) raw-material extraction, (2) building158
Theme B: Creating a livable, healthy and environmentally viable citiesmaterial manufacturing, (3) transportation, (4) construction, (5) building operation,(6) repair and maintenance, and (7) disposal stages (Wong et al., 2005):• Energy (MJ)• Resource depletion (kg)• Water consumption (m3)• Waste (kg)• Climate change (kg CO2 eq.)• Acid rain(kg SO2 eq.)• Photochemical smog (kg C2 H4 eq.)• Ozone depletion (kg CFC-11 eq.)• Toxicity to humans (kg toxic eq.)• Toxicity to ecosystems (kg toxic eq.)• Capital cost (HK$)• Recurring cost (HK$) (operational, repair and maintenance cost)• Disposal cost (HK$)The tool characterize, normalizes and weights environmental impacts of buildingsin accordance with ISO 14040-43 standard. The tool can measure a building interms of:All the ten environmental impacts in an aggregated indicator, a notional HKenviron-point (HK E-point) - one HK E-point is equivalent to the annualenvironmental impacts produced by one HK citizen per year (Amato 2006). If abuilding has life cycle impact of 5000 HK E-point, it means the life cycle of thebuilding is equal to 5000 no. of HK people’s annual impacts; orOne of the ten environmental impacts, for example in global warming potencycompared with 1 kg of CO2 potency (i.e. kg CO2 equivalent).This paper will summary the LCA result of the building archetypes assessed by thetool (see Table 1) The benefit and drawback of the following kinds of indicators in159
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Funding OrganisationCOMMERCE AND EC
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Ms. S.Y. Shum, Anna, Lecturer, Divi
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以绿色思维创新绿色
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ENHANCING SUSTAINABILITY DELIVERABL
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Theme A: Connecting the Pearl River
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Theme B: Creating a livable, health
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Average Credit4.03.83.63.43.2Averag
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Theme C: Education and Market Trans
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TABLE OF CONTENTS - The Professional Green Building Council

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