TABLE OF CONTENTS - The Professional Green Building Council

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