Topic: Wall Effect
Mandy Fok
Fiona Chan
Mandy Wong
Abby Ng
Hermia Cheng
What is Wall effect?
It is means that in the high
concentration city, the skyscrapers are
block the sunlight and affect the wind
velocity.
 It brings negative effect.
 Also, the screen effect is refer to the
building is totally block the wind and
brings a lot of relative disease.

Cause of Wall effect
The appear of Wall effect because
government is lack of urban planning
and supervision.
 The distance between building and
building are smaller and cause Wall
effect.
 In order to use the land effectively,
the developer will make the new
building to turn toward to skyscraper.

Photos of Wall effect
How does ‘Wall Effect’
affect our daily life?
Health

It weakened the wind from sea to
inland.

Air Quality turns worse.

Easy to get Trachea or Respiratory
tract diseases
Life Qualities

views are blocked

Turning on the air conditioner is
needed and the frequency of it is
higher the normal

Electrical bill disbursement is higher
Reference: http://lamhoyeung.mocasting.com/p/77064
Example of
wall effect
in HK



Vision City
Location: Tsuen Wan
High residential
building
“Citywalk”—a big
shopping mall
Grand Waterfront
Location: To Kwa Wan
 Density is high
 Very tall buildings

Union Square


7 parts of development
Mixed land use
-residential
-shopping mall
-hotel
-kindergarten
-office & high rise building
The Harbourside
& The Arch
Other example
The problems
of wall effect
The wall-like style building groups,
which can acquire the best view and
most of the sunlight
block the sea breeze and worsen the
air ventilation ability among the low
rise buildings
dwindled sea breeze circulation
among the buildings and streets
The wall-like style building groups,
which can acquire the best view and
most of the sunlight
block the sea breeze and worsen the
air ventilation ability among the low
rise buildings
dwindled sea breeze circulation
among the buildings and streets
1.rise in temperature
-residents in older area
switch on the air
conditioners more
frequently than before
-increase of monthly
amount in electricity
expense
2.air ventilation
problem
-Worsen air condition
Harmful to Human’s health
Decrease of foreign
investment, since air quality
is the second important
consideration
Solution of wall effect
•Reform city gauge meeting
•Mainly use ground space construction
storehouse level, the car park, the engine
house, the market and so on, reduces the
platform scale
•Set up the region cold system.
•Improve the city layout to coordinate
environment and the mountain ridge
background all around
•Supposes passes the wind stratum or the
ventilating duct greatly
•Supposes the building vegetation level
and the vegetation wall
•If certain are’s density is too high, must
plan again
•Considers the air circulation aspect the
question
*END*