Page 141 - The Hong Kong Green Building Council (HKGBC) 香港綠色建築議會
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which is 22.5 percent less than that of Precast concrete accounts for approximately minimise the use of scarce materials during
public housing estates using the minimum 60 percent of concrete works by weight construction. Extensive soft landscaping,
standard of the Building Energy Code and includes façades, staircases, beams, including trees and shrubs, will be utilised on
2012. The projected carbon emissions semi-precast slabs and bathrooms. For this the ground floor and roofs to achieve a green
related to the operation is 31.7 kg CO2e/m2. project, bathrooms will be pre-cast off-site ratio of 31.9 percent of the total site area.
In common areas of typical domestic in a factory. The total volume is approximate
floors, including lift lobbies and corridors, 7,220 tonnes. This could significantly Development permeability ranges from 40
two-stage lighting, daylight sensors and enhance the quality of the product and reduce to 60 percent, which is above the regulation
lower lighting power density will reduce the environmental impact, such as through requirement and will enhance ventilation in
the energy consumption needed for artificial material wastage and air pollution due to the surrounding areas.
lighting. transportation of surplus materials to site.
The projected consumption of potable water Recycling of salvaged materials will be KEY TEAM MEMBERS
is 36,592 litres per person per annum. Water adopted on all levels, including recycled
efficient appliances with WELS labels paving blocks and recycled safety mats. Owner / Developer
Grade 1 and 2 will be selected. The rainwater Timber formwork will be either sourced from Hong Kong Housing Authority
harvesting system is equipped with a drip recycled timber used in previous projects
line, which could reduce at least 50 percent or from sustainable forests, in order to Project Manager / Architect /
of the total irrigation consumption annually. C&S Engineer / M&E Engineer /
Landscape Architect /
Rainwater collected from roof tops Quantity Surveyor
of buildings, green roves, tops of Development and Construction Division,
covered walkway, slope, etc. Housing Department,
HKSAR Government
Domed riser for overflow
Pipe connected to Overflow To Mains Break Main Contractor
roof drains Storm Drains Tank Hsin Chong Construction Co. Ltd.
Filteration Layer Rainwater Chlorine Mixing Irrigation or
Storage Tank Disinfection Tank non-potable
Transition Layer
Drainage Layer use
Perforated Pipe
Drainage Layer
Flow Schematic of the Bio-Retention & Rainwater Harvesting System
HONG KONG REPORT ON THE STATE OF SUSTAINABLE BUILT ENVIRONMENT 2014 139
public housing estates using the minimum 60 percent of concrete works by weight construction. Extensive soft landscaping,
standard of the Building Energy Code and includes façades, staircases, beams, including trees and shrubs, will be utilised on
2012. The projected carbon emissions semi-precast slabs and bathrooms. For this the ground floor and roofs to achieve a green
related to the operation is 31.7 kg CO2e/m2. project, bathrooms will be pre-cast off-site ratio of 31.9 percent of the total site area.
In common areas of typical domestic in a factory. The total volume is approximate
floors, including lift lobbies and corridors, 7,220 tonnes. This could significantly Development permeability ranges from 40
two-stage lighting, daylight sensors and enhance the quality of the product and reduce to 60 percent, which is above the regulation
lower lighting power density will reduce the environmental impact, such as through requirement and will enhance ventilation in
the energy consumption needed for artificial material wastage and air pollution due to the surrounding areas.
lighting. transportation of surplus materials to site.
The projected consumption of potable water Recycling of salvaged materials will be KEY TEAM MEMBERS
is 36,592 litres per person per annum. Water adopted on all levels, including recycled
efficient appliances with WELS labels paving blocks and recycled safety mats. Owner / Developer
Grade 1 and 2 will be selected. The rainwater Timber formwork will be either sourced from Hong Kong Housing Authority
harvesting system is equipped with a drip recycled timber used in previous projects
line, which could reduce at least 50 percent or from sustainable forests, in order to Project Manager / Architect /
of the total irrigation consumption annually. C&S Engineer / M&E Engineer /
Landscape Architect /
Rainwater collected from roof tops Quantity Surveyor
of buildings, green roves, tops of Development and Construction Division,
covered walkway, slope, etc. Housing Department,
HKSAR Government
Domed riser for overflow
Pipe connected to Overflow To Mains Break Main Contractor
roof drains Storm Drains Tank Hsin Chong Construction Co. Ltd.
Filteration Layer Rainwater Chlorine Mixing Irrigation or
Storage Tank Disinfection Tank non-potable
Transition Layer
Drainage Layer use
Perforated Pipe
Drainage Layer
Flow Schematic of the Bio-Retention & Rainwater Harvesting System
HONG KONG REPORT ON THE STATE OF SUSTAINABLE BUILT ENVIRONMENT 2014 139
