Low Carbon Building Design

Buildings account for nearly 90% of electricity consumption in Hong Kong. Reducing the amount of energy consumed for the operation of buildings is paramount to reduce carbon emissions and combat climate change. As such, we have devoted utmost efforts to promote low carbon building design and to adopt various cutting-edge technologies and systems to enhance energy efficiency and resource conservation in our development projects.

During the year, we have consolidated our best practices and developed the Sustainable Building Design Considerations Guidelines. The Guidelines aim to provide general guidance, reference and key issues that need to be considered in implementing sustainability elements for building services installations and the construction methods and materials adopted. It is expected to be launched in Q4 of 2014. In addition, we also developed a standard Particular Specification (PS) for the design of the ArchSD temporary site office to further promote the use of green materials.

We believe the technological advancements in environmental protection can co-exist with aesthetics and functionality of architectural design. We embrace every opportunity to incorporate sustainable design and green measures in our building projects in order to support the transformation of the cityscape into more sustainable and livable.

 

Case Study

Construction of Fire Station-cum-Ambulance Facility at Cheung Yip Street, Kowloon Bay

The fire station provides fire and emergency ambulance services for the Kai Tak Cruise Terminal as well as future developments in Kai Tak area. With a site area of 2,250 m2, the project consists of a six-storey building accommodating a four-bay appliance room with ancillary and supporting facilities, and a single-storey building to support urban search and rescue operation.

Overview of Fire Station-cum-ambulance Facility at Cheung Yip Street

Overview of Fire Station-cum-ambulance Facility at Cheung Yip Street

The elements of greening are well integrated into the design of the fire station. About 43% of green coverage has been achieved through multiple planters and vertical greening above ground level and green roofs, which is double the minimum requirement (20%) for Government buildings. Continuous planters along the boundary edge further soften the rectilinear and angled building form and minimise visual impact of the building mass.

Up to 43% of green coverage has been achieved through green wall and green roofs
Up to 43% of green coverage has been achieved through green wall and green roofs

Up to 43% of green coverage has been achieved through green wall and green roofs

Regarding sustainable design features, the building has been able to introduce as much natural daylight into the interior space as possible through large windows and skylights composed of heat insulating glass, solar tubes and provision of balconies. Sun-shading fins have been installed on the west-facing external wall to minimise energy consumption of the air-conditioning system. Furthermore, water permeable paving blocks made of recycled materials have been used on the external ground.

Through adopting various sustainable design, the project has obtained provisional Platinum rating in “Building Environmental Assessment Method (BEAM) Plus New Buildings” by the Hong Kong Green Building Council.

Ample plantings including vertical greening and stacked planters are blended into the elevations

Ample plantings including vertical greening and stacked planters are blended into the elevations

Case Study

Joint-user Complex at Bailey Street, To Kwan Wan Reclamation

Overview of Joint-user Complex at Bailey Street

Overview of Joint-user Complex at Bailey Street

The theme of the Complex is to create a human-orientated civic focus to rejuvenate the To Kwa Wan precinct within the Kowloon City District and at the same time to accommodate new, expanded and merged Government services. The complex includes a community hall, a maternal and child health centre, a families clinic, a dental clinic and office accommodation for the Government.

With a site area of 2,200 m2, the project has incorporated many different forms of environment-friendly building services systems including, water cooled chillers, automatic demand control systems, heat energy reclaim system, T5 fluorescent tubes with electronic ballast, daylight sensors, service-on-demand control for escalator, building energy management system and solar hot water system.

The complex has adopted various energy efficient lighting equipment for illumination purpose
The complex has adopted various energy efficient lighting equipment for illumination purpose

The complex has adopted various energy efficient lighting equipment for illumination purpose

For recycled features, a rainwater and condensate recycling system is provided for irrigation and flushing respectively to conserve water. Solar powered microclimate station is adopted to control the irrigation system.

The complex has established green roofs and terraces, and vertical greening on external walls for environmental and amenity benefits
The complex has established green roofs and terraces, and vertical greening on external walls for environmental and amenity benefits

The complex has established green roofs and terraces, and vertical greening on external walls for environmental and amenity benefits

In terms of greenery area, the ratio is significantly higher in this building. There is about 911m2 of soft landscape area, equivalent to 41.4% of the site area, much higher than the 20% statutory requirements for similar sites. The extensive greenery would ameliorate heat island effect by reducing temperature of heat-absorbing surfaces.

The Complex finally achieved the highest rating of "Platinum" in the Building Environmental Assessment Method (BEAM) New Building Development (Version 4/04), endorsed by the Hong Kong Green Building Council.