Page 140 - The Hong Kong Green Building Council (HKGBC) 香港綠色建築議會

Public Sector
Projects
This project is situated on a site formerly
occupied by the Au Tau Departmental
Quarters. It comprises three parcels of land,
the smallest piece of which is designated as
a village square, which is open to the street to Based on an ecological study, a community
form a welcoming entrance to the estate and
provides an open space for social gatherings,
interaction and periodic festivities. The
design target is to provide a sustainable and
healthy living environment in this semi-rural
area, with people-orientated leisure facilities
that are coherent with the neighbourhood.
Micro-climate studies were conducted to
optimise the block design to reduce solar
heat gain, capture natural breezes for better
ventilation and offer a comfortable indoor
environment for residents. Building form
has been carefully designed, providing wind
corridors and empty bays on the ground
floor to optimise the local air movement and
reduce the heat island effect. The four-storey
set back of Block 2 allows the southerly wind
during summer to flow into the central court.
Opportunities have also been explored
to maximise the greening area. These
include the provision of grass paving at the
estate road, hydroseeding for geotechnical
improvement of slopes, and introducing
green roofs on covered walkways and
domestic blocks. A landscape terrace with
a link bridge connection to the lift tower in
138 HONG KONG REPORT ON THE STATE OF SUSTAINABLE BUILT ENVIRONMENT 2014
Ex-Au Tau Departmental Quarters
Block 2 is provided in the form of a deck
for the residents to access the slope at the
eastern part of the site.
garden will be provided with ecological
improvement measures to the natural and
formed slopes near the landscape terrace. In
addition, to resemble the lifestyle of a village
farm, a selection of fruit trees and shrubs
will be grown in the community garden. It is
believed that these provisions will stimulate
the tenants’ awareness of green living and
their interest in the protection of their natural irrigation. Biological and physical treatment
surroundings. A number of feature trees with
good form and health, and of mature size and
crown spread, will be kept to enhance the
streetscape and village atmosphere.
There are several man-made slopes
surrounding the building sites, which are
currently covered by a mature stand of exotic
trees. Apart from the aging problem, these
PROJECT SCALE / USE
Site area (approx.)
Gross floor area (approx.)
Number of floor above grade
Approximate final population
Key Occupancy type(s)
exotic trees are infertile and are subject to
strong wind and typhoon attacks. A study
carried out on the trees shows that thinning
of the exotic trees with poor health and form
in selected slope areas and replacing them
with a selection of native tree seedlings
will improve the long-term bio-diversity and
enhance the ecological value of the slope
vegetation.
A rainwater harvesting system is proposed
as a green feature. Rainwater is collected
from the slopes and from building roofs for
of rainwater can be achieved by applying
a bio-retention system. The project is now
under construction and is anticipated to be
completed in early 2016.
Photovolatic panels will be installed
to produce 2.58 percent of communal
power. There is a projected total energy
consumption of 54.7 kWh/m2 per annum,
3.74 hectares (gross), 1.74 hectares (net)
50,240 m2 (domestic), 1,709 m2 (non-domestic)
3 blocks, 15 - 19 floors
3,500
Public Rental Housing