The document discusses energy efficiency and sustainability issues for high-rise buildings. It defines key terms like energy efficiency, sustainability, and provides information on daylighting, renewable energy options, water management, and cutting edge technologies that can be used to increase sustainability in high-rise buildings. The document emphasizes using passive design strategies and renewable energy to reduce energy usage and emissions from buildings.

1. PRESENTED BY:
GROUP 06
Architecture Discipline
Khulna University,
Khulna, Bangladesh.
ENERGY EFFICIENCY
AND SUSTAINABLE ISSUES
FOR HIGH-RISE BUILDING

2. Energy efficiency, means using less energy to provide the same level of energy. It is therefore one
method to reduce human greenhouse gas emissions.
Energy efficiency =
Energy gain
Energy use
ENERGY EFFICIENCY
SUSTAINABILITY
sustainability is the endurance of systems and processes. The organizing principle for sustainability is sustainable development, which
includes the four interconnected domains: ecology, economics, politics and culture. Sustainability science is the study of
sustainable development and environmental science.
Sustainability is the ability to continue a defined behavior indefinitely.
For more practical detail the behavior you wish to continue indefinitely must be defined.
For example:
Environmental sustainability: is the ability to maintain rates of renewable resource harvest, pollution creation, and non-renewable resource depletion
that can be continued indefinitely.
Economic sustainability: Is the ability to support a defined level of economic production indefinitely.
Social sustainability: is the ability of a social system, such as a country, to function at a defined level of social well being indefinitely.

3. SCOPE
The code is to enhance the design and construction of buildings through the use of building concepts having a
positive environmental impact and encourage sustainable construction practices, allowing efficiency and
conservation of energy, water and building materials, and to promote resource efficiency.
Rationale for Sustainable/Green Buildings
Built environment play a vital role in impacting on the natural environment and the quality of life. Sustainable
development concepts and approaches applied to the design, construction and operation of buildings can enhance both
the economic and environmental benefits of the community in Bangladesh and around the world. Energy efficiency and
sustainability is not an individual issue. The benefits of sustainable design principles include resource and energy
efficiency, healthy buildings and materials, ecologically and socially sensitive land use and strengthened local economics
and the communities, objectives vital for future development of Bangladesh.
DEFINITIONS
Daylight zone: an area with a depth of 5 meters
parallel to any glazed external wall.
Emergency lighting: Lighting used for emergency spaces and functions, e.g. in fire stairs, for
egress path signage.

4. All the main areas in the buildings that are used on a frequent basis, such as living
rooms, bedrooms, classrooms, lobbies, meeting rooms, hall rooms and office spaces.
Service spaces like toilets, bathrooms, corridors and stores will not be considered as
frequently occupied areas.
Regularly occupied:
space
Wastewater generated from wash hand basins, showers and baths, Grey water often excludes
discharge from laundry, dishwashers and kitchen sinks due to the high nutrient levels.
Grey water:
The window-to-wall ratio of a building is the percentage of its facade taken up by light-transmitting glazing
surfaces, including windows and translucent surfaces such as glass bricks. Only facade surfaces are counted
in the ratio, and not roof surfaces.
Window to wall ratio
of building (WWRB)
Lighting Power
Density (LPD)
average total lighting power installed divided by the total occupied area
The ratio of solar heat gain at normal incidence through glazing to that occurring
through 1/8 inch thick clear, double-strength glass. Shading coefficient, as used
herein, does not include interior, exterior, or integral shading devices.
Shading coefficient
(SC)

5. An indicator of glazing performance is the amount of heat admitted through the glass vis-à-vis the total
heat incident on the glass by virtue of direct solar radiation. The unit is a simple fraction or percentage.
Solar Heat Gain
Coefficient (SHGC)
Heat transmission in unit time through unit area of a material
or construction and the boundary air films, induced by unit
temperature difference between the environments on each
side. Units of U-value are W/m2.k
U-value (thermal
transmittance)
Visible Light Transmittance
(VLT)
the amount of light transmitted through glazing, expressed as a simple
fraction or percentage

6. ENERGY
EFFICIENT BUILDING SYSTEM
•Energy efficient building system controls
the functions of the building, allowing a
smooth operation and efficient functioning
of the building.

7. ENERGY EFFICIENT BUILDING SYSTEMS
Figure illustrates Energy
efficiency management system
Intelligent Daylighting System CONTROLITE® |
- Provides optimal comfort in changing daylight
conditions
- Offers sky lighting surfaces in larger areas
- Withstands weather and temperature extremes
- Sustainable design, saves energy, reduces
heating/cooling costs
b) for rooms that measure between 8 to 14 meters in depth, window area shall be at least 30% of the
area of the external wall of the room and 35% of the external wall
c) for rooms that measure more than 14 meters in depth, window area shall be at least 35% of the area
of the external wall of the room
a)for rooms that measure less than 8 meters in depth, window area shall be at least 20% of the area
of the external wall of the room,
A well-daylit working environment not only saves energy but is also preferred by the occupants.
Window area shall not be less than 14% or 1/7th of the total floor area of the building
DAYLIGHTING AND SUPPLEMENTARY LIGHTING SYSTEM
Source: http://www.danpal.com/products/controlite/

8. LIGHTING POWER DENSITY
OCCUPANCY SENSOR
In order to limit the use of electricity in the unoccupied areas of buildings, occupancy sensors linked
to lighting shall be installed in the public areas of buildings
DETERMINE ILLUMINANCE LEVEL IN EACH SPACE
(LUX) BASED ON IESNA (ILLUMINATION ENGINEERS
SOCIETY OF NORTHAMERICA) RECOMMENDATIONS
FOR DIFFERENT TASKS
• Improving energy efficiency
• Types and uses of solar energy
• Types and uses of flowing water
• Uses of wind energy
• Types and uses of biomass
• Use of geothermal energy
• Use of hydrogen as a fuel
• Decentralized power systems
RENEWABLE ENERGY OPTIONS
USING SOLAR ENERGY TO PROVIDE HEAT
ELEVATOR AND ESCALATOR EFFICIENCIES
HVAC: HEATING, VENTILATION AND COOLING
• Remove heat and moisture
• Also filter and recirculate air to remove
odor, dust and other particulates
AIR HANDLING UNIT CONCEPTS
Air-handling systems deliver fresh outside air to
disperse contaminants and provide free cooling,
transport heat generated or removed by space
conditioning equipment, and create air movement
in the space also being served, deliver heated or
cooled air to conditioned air to conditioned spaces.

9. -What is sustainable site?
-A sustainable site plan takes into account the
impact of the building on the surrounding environ-
ment and it's intended occupants.
-Site Selection:
There are some factors that should be kept in mind
While selecting a place to be a site for construction
work of an architecture.
• Avoid flood plains.
• Provide buffers for bodies of water.
• Avoid green fields.
• Keep transportation in mind.
Surface Type Run-off
coefficient,C
Roof, conventional 0.95
Green Roof(Soil/growing medium depth
greater than 300mm
0.45
Concrete paving 0.95
Gravel 0.75
Brick paving 0.85
Vegetation
(1-3%)
(3-10%)
(Greater than10%)
0.2
0.25
0.3
Turf surface
0-1%
1-3%
3-10%
Greater than10%
0.25
0.35
0.4
0.45
Run-off co-efficient of various surface:
Sustainable site

10. -SUBJECTS TO BE KEPT IN MIND TO MAKE SITE SUSTAIN-
ABLE:
• mandatory unpaved area.
• site drainage and run-off co-efficient.
• vegetation plan.
• irrigation plan.
• rain water harvesting system.
-MANDATORY UNPAVED AREA:
50% of the mandatory open space shall be permeable on sites of all occupancy categories.
The open space should not remain bare generating dust. It should be made green or have
permeable pave like organic mulch or charcoal.
Natural green space with grass
Perforated paved area
SITE DRAINAGE AND RUN-OFF CO-EFFICIENT:
-Site over 1340sq.m shall have site drainage consideration for flash flooding and
erosion prevention measure.
• Excessive paving is responsible for fast water run-off and flash flooding.
• design shall indicate the paving to make permeable. The net run-off shall not be greater than 60%.
Here A is the area of the pave,
vegetation or road and c is the
run-off co-efficient.
VEGETATION PLAN:
For sites over 3 acres vegetation
plan shall be submitted along with
site plan and the irrigation plan.
-Vegetation plan is to show
green coverage, the
types of plant and bushes in the
site along with the
built form.

11. IRRIGATION PLAN:
-For sites over 10 acres ,an irrigation plan along with the site plan shall be submitted with
working drawing for the management of rain water.
-Pond shall be provided with area greater than 3% of the site. This will carry the rain water.

12. RAIN WATER HARVESTING:
-Building of floor area greater than 4000 sq. m
shall have own rain water harvesting plant.
-Reservoir capacity=Ground coverage area X Rain
collection coefficient 0.73.
-Reservoir should be under roof or at lower level.

13. BUILDING ENVELOPE
The Building Envelope is physical
separator between the EXTERIOR and the
INTERIOR of the building and fenestration
systems.
The Window to Wall ratio of building
(WWRB)
Solar Heat Gain Coefficient
Window Openings
Shading
Roof insulation and Green Roofing System

14. The Window to Wall ratio of
building (WWRB), will be
determined in conjunction with the glazing
performance, as indicated by the Solar
Heat Gain Coefficient (SHGC) or
Shading Coefficient (SC) of the glass
used.
the Visible Light Transmittance (VLT) of
the glazed element shall not be lower than
35%.
Solar Heat Gain Coefficient
SHGC is the ratio of the solar heat gain
that passes through the fenestration to
the total incident solar radiation that falls
on the fenestration

15. Window Openings
Mechanically ventilated and cooled buildings of all occupancies, other than hazardous, retail and storage, shall
have the provision of using natural ventilation for cooling and fresh air, in frequently occupied areas , with a
fraction > 4% of the floor area being specified as openable windows
Openable balcony doors can be counted in this calculation. Window to Wall Ratio is less than openable
area then 50% of window area should be openable
Naturally ventilated buildings of all occupancies, other than hazardous and storage, shall provide for 50% of its
window area to be openable.
All the openable windows above ground should be designed with safety measures in place such as
protection hand rails for child safety.
Windows to any regularly occupied space on exterior walls in naturally ventilated buildings shall be shaded.

16. SHADING For naturally ventilated buildings of all
occupancies, horizontal sunshades shall be provided over windows on
South, East and West,
Horizontal louvers can be used instead of sunshades, in which case,
depth of louver shall not be less than 0.234
Vertical Shading devices shall be provided on the West,
The above rule shall be relaxed if it can be demonstrated that shading
is achieved by existing neighbouring structures.
The north side of all buildings are exempt from the above rules.
Roof insulation and Green Roofing System
a) The roof slab design shall consider structural support of the green
roof system, with growing medium of minimum 300mm.
b) The design will indicate protection from dampness and provide a
drainage system Horizontal roof slabs, which are not covered by
green roofing system, will have roof slabs with insulation
c) Reduce carbon footprint

17. INTERNAL
WATER MANAGEMENT

18. We all know that planet earth has more water than land but
sadly just about 3% of the Earth’s total water is
fresh water and over two third of that is in glaciers.
That makes it about less than 0.5 percent of our
fresh water available in lakes, ponds and rivers
INTERNAL WATER MANAGEMENT

19. 4.6. INTERNAL WATER MANAGEMENT
4.6.1 Reuse of Grey Water
Buildings of Occupancy A5, E1 and E2 and shall reuse grey water for water efficiency and management.
Grey water from wash basin shall be reused in toilet flushing and/or irrigation after filtration to ensure a
BOD (Biochemical Oxygen Demand) level <50. Such water shall not be considered potable.
4.6.2 Efficient Fittings in Toilets
Water efficient fittings, including faucets, showerheads and flushes, that use less water for the same
function
as effectively as standard models, shall be used in buildings of all occupancies
4.6.3 Service Hot Water and Pumping
In order to reduce the energy used for water heating, buildings of occupancy A5 and D1 shall use solar hot
water system to supply a minimum of 30% of the total building hot water requirements. The solar hot water
system can be flat plate solar collectors or vacuum tube solar system, this system must be designed and
installed with the backup system or as a per heating for the main hot water system.
BNBC

20. The availability and quality of water are being improved.
• Rooftop rainwater harvesting systems, storage tanks, bio-sand filters, and stand
posts with water taps in schools and homes provide water for drinking and
sanitation—
• Groundwater levels are augmented with check dams, contour trenches, dug
well recharging, pressurized recharge wells, and pond development; and
• Villagers and development committees are being trained to effectively manage
water resources, and water literacy sessions motivate villagers to conserve
water.
• Heating and cooling systems utilizing water to transport thermal energy,
as in district heating systems, like for example the New York City steam
system.

21. Cutting edge is an adjective used to describe the newest, most
advanced version of a product or service. This whole new thing is
address as cutting edge.
In architecture the newest technologies which is used in designing can
be defined as cutting edge. There are various types of cutting edge
technology.
•Air condition
•Wind turbine
•Window coating
•Sensor system
•Operable façade
•Cultivated façade
•BESS Installation, Tools and Responses
•Green Eyes for Stairwells
•Firefighter Air Replenishment Systems (FARS)
•OEO Elevators
•High-Rise Command with Building Intelligence
•Healthy material
•Wooden High-Rise Buildings
CUTTING EDGE TECHNOLOGY
LEED stands for…
Leadership in Energy and Environmental Design
• Developed by three LEED stands for…
• Leadership in Energy and Environmental Design
• Developed by the U.S. Green Building Council
(USGBC) in 2000
e U.S. Green Building Council (USGBC) in 2000
Less points More points
DIMENSIONS OF BEING ‘GREEN’

22. MAA-BAR
Maa-Bar is a SEED award winning project and serves
as a case study of triple bottom line design. The project
demonstrates how a design approach can be shaped by
holistic systems thinking through an understanding of a
larger set of contextual factors.
SEED projects must demonstrate how they embody the five SEED principles
SEED Principle 1: Advocate with those who
have a limited voice in public life.
SEED Principle 2: Build structures for
inclusion that engage stakeholders and allow
communities to make decisions.
SEED Principle 3: Promote social equality
through discourse that reflects a range of values
and social identities.
SEED Principle 4: Generate ideas that grow
from place and build local capacity.
SEED Principle 5: Design to help conserve
resources and minimize waste.
SEED
Social Economic Environment Design Networks
SEED will provide guidance, evaluation, and certification for the
social, economic, and environmental relevance of design projects.
Maa-Bara shows the power of
 interdisciplinary collaboration,
 recycling waste streams,
 localizing benefits,
 and locally sourcing materials

23. WHY GREEN BUILDINGS?
Impacts of U.S. Buildings on Resources
How large are buildings’ carbon footprint anyway?
Buildings are responsible for…
40% primary energy use*
72% electricity consumption*
39% CO2 emissions*
13.6% potable water consumption**
Green Buildings can potentially reduce…
Energy Use
24%*
to
50%**
CO2
Emissions
33%***
to
39%**
Water
Use
40%**
Solid
Waste
70%**
Bioclimatic architecture refers to the design of buildings and spaces
(interior – exterior – outdoor) based on local climate, aimed at
providing thermal and visual comfort, making use of solar energy
and other environmental sources.
Heat protection of the buildings in winter as well as in summer, using
appropriate techniques which are applied to the external envelope of the
building, especially by adequate insulation and air tightness of the building
and its openings.
Use of solar energy for heating buildings in the winter season and for
daylighting all year round.
Removal of the heat which accumulates in summer in the building to the
surrounding environment using by natural means (passive cooling systems and
techniques), such as natural ventilation, mostly during nighttime.
Improvement – adjustment of environmental conditions in the interiors of
buildings so that their inhabitants find them comfortable and pleasant (i.e.
increasing the air movement inside spaces, heat storage, or cool storage in
walls).
Ensuring insolation combined with solar control for daylighting of buildings,
in order to provide sufficient and evenly distributed light in interior spaces.
Improvement of the microclimate around buildings, through the
bioclimatic design of exterior spaces and in general, of the
built environment, adhering to all of the above principles.
Bioclimatic architecture

24. CASE STUDY

25. SHANGHAI TOWER
LOCATION
PUDONG DISTRICT, SHANGHAI CHINA
OWNER BUILDER CONTRACTOR
SHANGHAI TOWER CONSTRUCTION & DEVELOPMENT
CO., LTD.
MIXEDUSE
RETAIL, OFFICE, HOTEL, CULTURAL CENTER
ENERGY EFFICIENCY AND SUSTAINABLE ISSUE:
SITE SUSTAINABILITY
A FULL 33 % OF THE SITE IS GREEN
SPACE, WITH LANDSCAPING THAT
BREATHES FRESH AIR INTO THE CITY
ALSO COOLS THE CITY AND SHADES
PAVED AREAS THAT RADIATE HEAT.
The site doesn’t have any natural water body.
However exposed water surface is presented

26. BUILDING ENVELOPRE
• Window Opening And
Shading
• Glazed wall, Curtain Wall
Support System
Thicker glass lights to respond to
high wind-loadpeaks.
Glass perpendicular to the ground reflects less
than glass angled to the sun. The largest
angle on the tower was about 9°.
The glass selected for the exterior will have
minimal visible light reflectance of about
12%.
double skin curtain wall
• Targeted to reduce energy consumption by
21%
• Ventilated atriums conserve energy by
modulating the temperature within the
void
FAÇADE SYSTEM
WAL
L A
WAL
L B
Curtain Wall A: 26 mm laminated glass assembly
The upper 25% of the panel will have dissolving frit pattern
from 75% down to 5%
Curtain Wall B: 30 mm insulated glass assembly The middle
portion of the panel between “chair rail” to the finish floor will
have dissolving frit pattern from 5% down to 75% and 5% again
Reduce cooling energy requirement
By having two skin layers forming the building façade
the Tower creates thermal buffer zones, that improves
indoor air quality.
plan section
Diagram produced using BIM
Source:Glenser.com

27. ENERGY EFFICIENT BUILDING SYSTEM
54,000
kWh/year
Power production
(Renewable energy)
45
turbines
15 turbines*
3 turbines high
4
m/s
Wind speed at
580m height
Wind turbines
Wind turbines at the top
of the building will power
the lighting of the building
 Shanghai Tower has two chiller
plants, strategically located, in
the building reducing energy
required to pump chilled water.
Daylighting
The glass skin admits maximum daylight
reducing the need for electric lighting
The inner glass, part of the buildings façades,
uses 14 percent less glass . Reducing material
costThe geometry saved $58M in structural materials
Light pollution
Cost
Exterior Curtain Wall A glass ratio is very
high, at about 87%Wall B has a glass ratio of about 60%.
Glass perpendicular to the ground reflects
less than
glass angled to the sun. The largest angle
on the tower was
about 9°. The glass selected for the
exterior will have minimal visible light
reflectance of about 12%.

28. INTERNAL WATER MANAGEMENT
• The building’s state-of-the-art water
conservation practices include water
harvesting in the crown and on the podium
terraces, which is then used for landscape
irrigation and other uses. The greywater
recycling systems also located lower down the
tower reduce potable water demand by around
40 per cent.
WATER TANK1
WATER TANK2
• collect rainwater, used for tower’s
heating and AC systems
• Recycle grey water and storm water for
Irrigation
• The system Features water treatment plants
within the Tower, podium, and basement
level to reduce Pumping energy.
CUTTING –EDGE
TECHNOLOGICAL ISSUES OF
HIGH-RISE DEVELOPMENTThe world's fastest elevator that
travels at a record-breaking
42.8mph
Green garden inside tower
Pendulum inside
prevents motions of
swing

29. GREEN BUILDING PRINCIPLES AND FEATURES
• WATER EFFICIENCY.
40%
water reduction
178,000,00
0
million gallons of water
per year saved
425
olympic sized swimming
DAYLIGHTING SUNSHADING BUILDINGCONTROLS COGENERATION
LOCALMATERIALS ENVELOPE LANDSCAPING WINDTURBINES
 On-site power is generated by wind
turbines located directly beneath the
parapet
SUSTAINABLE FEATURES
• CAPTURE RAINWATER
HARVESTING AND BLACKWATER
TREATMENT FACILITY

30. • Right amount of twist and taper sheds wind loads
• Wind turbines at the top of the building
power the exterior lighting
Exterior lighting
Wind load
• Prevents 34,000 metric tons of carbon
emission

31. BNBC CODE APPLIED IN CASE REMARK
SITE SUSTAINABILITY 33% GREEN AREA COVERED 
BUILDING ENVELOPE 50% WINDOW OPENNG,SHAING,ROOF INSULATION 
ENERRGY EFFICIENCY WINDOW AREA MORE THAN 1/7 OF TOTAL FLOOR
AREA,OCCUPANCY SENSOR,WELL VENTILATION

INTERNAL WATER MANEGEMENT 70% GREY WATER MANAGEMENT ASSURED
reduce potable water demand by around 40 per cent

CUTTING EDGE TECHNOLOGY WIND TURBINE,GREEN GARDEN,LESS GLASS USED 
LEED/SEED PLAINUM CERTIFIED, 3 STAR BUILDING OF CHINA
THE BUILDING IS NOT SEED CERTIFIED

32. The Bahrain
World Trade
Center (Bahrain
WTC or BWTC)
Type Commercial
Location Manama, Bahrain
Construction
started
2004
Opening 2008
Cost US $ 150 million
Management Atkins
Height
Antenna spire 240 m (787 ft)
Technical details
Floor count 50
Lifts/elevators 4

33. Scope of using wind turbine in a
highrise :
1.Can be installed in expected height.
2.No need for vertical poles
3.Can contribute against the air pressure acting on the
high-rise
4.Aesthetic reason
Challenges of using wind turbine in a highrise :
1.Needs uninterrupted flow of wind.
2.In case of several turbines all turbines must rotate in same
speed ,otherwise the turbine in higher height will wear out
sooner.
3.Vibration created from the rotation of tower must be taken
care of.
4.Dismantling of turbine blade may cause serious havoc.
5.As turbines are fixed to the bridge so they
cant rotate according to the changing wind direction
.
6.Avoiding collision between turbine and Bridge.

34. Design solutions for wind turbine in Bahrain World trade center
1.Slightly V shaped bridge for avoiding contact between turbine blade and the bridge.
2.Tower shape elliptical to ensure same wind pressure to all turbines.
3.Bridges have been as rigid as possible to reduce vibration.
4.Turbines have installed in a direction that receives most air pressure Throughout the
whole year.
5.Turbines can rotate even if the wind comes from 45 degree angle.
Design errors
According to Bert Blacken, professor of Building Physics
at TU/e, this assumption is incorrect. Blacken calculated
that the towers would actually produce 14 percent more
wind energy if they were positioned the other way round.
Or better still, suspending the wind turbines further back
would have given a 31% higher energy output per year,
Blacken discovered.

35. ENERGY EFFICIENCE BUILDING SYSTEM
the three 29m-diameter wind turbines.
The wind turbines produce between 11% and 15% of the building's electricity needs
(generating between 1,100MWh and 1,300MWh a year) and operate for 50% of the
time with full power being generated at a wind speed of 15m/s to 20m/s.
The generators are of a four-pole 400V asynchronous induction type,.
reducing carbon emissions
A solar-powered road, amenity lighting and high-frequency, energy-saving fluorescent
lighting with zonal control
Photosynthetic wall
SITE SUSTAINABILITY
the 30-year-old existing hotel and shopping mall on the site. The planning of the site
became constrained by the existing buildings and the road network around the site. By
extending the main axis of the existing shopping mall towards the sea, “Retail Streets”
were established..
Moreover, extensive landscaping reduces site albedo, generates O2 and shades the on-
grade car parks on south side .
The reflective pools are located at the entrances to provide local evaporative cooling.

36. Building Envelop
The air temperature of the building is reduced by the extra high-quality
solar glasses.
Suitable sheltering provided by the balconies to the slanting elevations
with overhangs
The opaque materials are given heightened thermal insulation
Projectile shading to external glass facades
Operable windows
INTERNAL WATER MANAGEMENT
there is a low-pressure loss distribution for primary air and water transport systems requiring
less fan and pump power.
The building has two drainage systems separating foul and waste water
a low use of air and chilled water transport systems.
chilled water pumping takes less power to operate than conventional pumping.
DUAL flush WC
Water recycling

37. Green building features and principles
• Low solar heat gain coefficient of glass (SHGC)
• Materials recovery facility (MRF)
• Occupancy sensors
• Water-efficient fittings
Bio climatic issues
High-efficiency heating and air-conditioning equipment
Cooling system, a system which has a mechanism of sea water cooling
and heating rejection.,
pools at the entrances offer local evaporative cooling
Sensors that control artificial light
Cutting edge technological issues of hi rise development
low-leakage, openable windows
The opaque materials
solar-powered road
The wind turbines
DUAL flush WC
Electric taps

38. BNBC CODE APPLIED IN CASE REMARK
SITE SUSTAINABILITY 25% GREEN AREA COVERED 
BUILDING ENVELOPE WINDOW OPENNG,SHAING,ROOF INSULATION 
ENERRGY EFFICIENCY WINDOW AREA MORE THAN 1/7 OF TOTAL FLOOR
AREA,OCCUPANCY SENSOR,WELL VENTILATION

INTERNAL WATER MANEGEMENT 60% GREY WATER MANAGEMENT ASSURED
reduce potable water demand by around 30 per cent

CUTTING EDGE TECHNOLOGY WIND TURBINE, GLASS USED 
LEED/SEED X

39. • Site is adjacent to
Central Park &
Columbus Circle.
• No vegetation on the
site .But there is a park
nearby.
• Innovative
technology to
have energy efficiency
and sustainability.
SUSTAINABLE SITE:
CASE STUDY:HEARST TOWER:
CENTRAL PARK
HEARST TOWER
SITE
HEARST TOWER WITHOUT
ANY VEGETATION

40. BUILDING ENVELOPE:
To minimize solar gain, the building envelope
contains high performance low emission glass,
with integral roller blinds which can be used to
reduce glare.
The built form is overshadowed by the tall towers
nearby.
ENERGY EFFICIENT BUILDING SYSTEM:
• The glass has a special 'low-E' coating.
• Sensors that control artificial light based on the amount of natural
light .
• High-efficiency heating and air-conditioning equipment that uses
outside air for cooling and ventilation for 75% of the year .
• The 'Icefall,' a two-story waterfall .
• Walls are coated with low-vapor paints .
• A roof that collects rainwater in a 14,000gal
basement reclamation tank.

41. CUTTING EDGE TECHNOLOGY’S ISSUES OF HIGH-RISE DEVELOPMENT:
• Walls are coated with low vapor paints.
• Censor that controls artificial lights based on amount of natural light.
• Motion censors to turn off lights and computers when place is unoccupied.
• Use of “low-E” coating on the glass for maximum daylight with minimum heat
• High-efficiency HVAC systems
LEED CERTIFICATION Innovative landscape and exterior design
increases building efficiency
Effective storm water system
reduces amount of dumping
rainwater
Using local resources saves energyConstruction materials were chosen
with no harmful chemicals and
manufactured with recycled content
Expensive and complicated
cleanup procedures
Reduces indoor air
contaminants

42. • Low solar heat gain coefficient of glass (SHGC)
• Materials recovery facility (MRF)
• Occupancy sensors
• Water-efficient fittings
FEATURES OF GREEN BUILDING INTERNAL WATER MANAGEMENT:
Tank
Landscaping
irrigation
Low-flow fixtures
implementation

43. BIO-CLIMATIC ISSUES
• Glass coating to reduce solar radiation and therefore cooling load - the glass has a special 'low-
E' coating that allows for internal spaces to be flooded with natural light while keeping out the
invisible solar radiation that causes heat .
• Sensors that control artificial light based on the amount of natural light .
• High-efficiency heating and air-conditioning equipment
• The 'Icefall,' a two-storey waterfall
that chills the ten-storey atrium,
drawing off warm season heat using
rainwater from the roof

44. BNBC CODE APPLIED IN CASE REMARK
SITE SUSTAINABILITY NO VEGETATION ON THE SITE
BUT THERE WAS A PARK NEARBY
X
BUILDING ENVELOPE BUILDING ENVELOPE CONTAINS
HIGH PERFORMANCE LOW EMISSION GLASS

ENERGY EFFICIENCY HIGH-EFFICIENCY HEATING AND AIR-CONDITIONING
EQUIPMENT .
TWO STOREY WATERFALL

INTERNAL WATER
MANEGEMENT

CUTTING EDGE
TECHNOLOGY
WIND TURBINE, GLASS USED 
LEED/SEED X

45. THANK YOU ALL
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