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8/8/2019 Building Envelope Latest
1/13
SCHOOL OF PLANNING AND ARCHITECTURE, M. B.E.M
TUSHAR KUMAR , SMRITI MOHTA , R PRASANNA VENKATESAN , SANKALP SEN SAXENA, SOUMYA BATCH 2010-2012E.S.I HOSPITAL, Sector -24, Noida
SCHOOL OF PLANNING AND ARCHITECTURE,
M. B.E.MR PRASANNA VENKATESAN
SMRITI MOHTA
SANKALP SEN SAXENA
SOUMYA
TUSHAR KUMAR
BATCH 2010 - 2012
E.S.I HOSPITAL,
Sector -24, Noida
8/8/2019 Building Envelope Latest
2/13
SCHOOL OF PLANNING AND ARCHITECTURE, M. B.E.M
TUSHAR KUMAR , SMRITI MOHTA , R PRASANNA VENKATESAN , SANKALP SEN SAXENA, SOUMYA BATCH 2010-2012E.S.I HOSPITAL, Sector -24, Noida
The "Building Envelope" is the area that separates conditioned space from
unconditioned space or the outdoors. It is the separation between the
interior and the exterior environments of a building. It serves as the outer
shell to protect the indoor environment as well as to facilitate its climate
control.
BUILDING ENVELOPE!!!!!..................................
Building envelope design includes fourmajor performance objectives:
STRUCTURAL INTEGRITY
MOISTURE CONTROL
TEMPERATURE CONTROL
CONTROL OF AIR PRESSURE
BOUNDARIES OF SORTS
8/8/2019 Building Envelope Latest
3/13
SCHOOL OF PLANNING AND ARCHITECTURE, M. B.E.M
TUSHAR KUMAR , SMRITI MOHTA , R PRASANNA VENKATESAN , SANKALP SEN SAXENA, SOUMYA BATCH 2010-2012E.S.I HOSPITAL, Sector -24, Noida
E.S.I Multi - Specialty Hospital, Sector - 24, Noida
The proposed expansion of the existing hospital complex is a Govt. project
developed under the Employees State Insurance Corporation ( E.S.I.C. )
Scheme at Plot No. A 3, Sector 24, Noida, Uttar Pradesh.
N
The PROJECT
8/8/2019 Building Envelope Latest
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SCHOOL OF PLANNING AND ARCHITECTURE, M. B.E.M
TUSHAR KUMAR , SMRITI MOHTA , R PRASANNA VENKATESAN , SANKALP SEN SAXENA, SOUMYA BATCH 2010-2012E.S.I HOSPITAL, Sector -24, Noida
THE EXISTING BUILDING ENVELOPE
All the external walls of the building are 230mm thick brick masonrywalls.
Building Envelope
On top of the masonry walls
there is A.C.P cladding on all
sides of the building.
This A.C.P cladding is very
beneficial in preventing the
building from getting too hot as
A.C.P panels reflect most of the
solar radiation and allow
transmission of only a fraction
of it inside the building.
8/8/2019 Building Envelope Latest
5/13
SCHOOL OF PLANNING AND ARCHITECTURE, M. B.E.M
TUSHAR KUMAR , SMRITI MOHTA , R PRASANNA VENKATESAN , SANKALP SEN SAXENA, SOUMYA BATCH 2010-2012E.S.I HOSPITAL, Sector -24, Noida
PHOTO 1 (CLOSER VIEW)
PHOTO 1
PHOTO
2
PHOTO 1 PHOTO 1 (CLOSER VIEW)
PHOTO 2 PHOTO 3
PHOTO 4
PHOTO
3
PHOTO 4
These photographs
demonstrate the height
differences within the
building block and also
the other building blocks
on site.
8/8/2019 Building Envelope Latest
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SCHOOL OF PLANNING AND ARCHITECTURE, M. B.E.M
TUSHAR KUMAR , SMRITI MOHTA , R PRASANNA VENKATESAN , SANKALP SEN SAXENA, SOUMYA BATCH 2010-2012E.S.I HOSPITAL, Sector -24, Noida
Building Envelope
ENERGY SAVING POTENTIAL
Heating, cooling and lighting systems have the major impact on the energy consumption in non-
residential buildings. This energy demand is due to perform thermal and visual comfort in the indoor
environment. The Envelope System strongly affect the energy demand of these active systems, since
it regulates heating and cooling loads and daylight availability. With the help of Building Envelope
renovations and refurbishment major energy savings can be achieved reducing thermal and electric
loads.
METHODS OF ENERGY SAVING
From the energy efficiency point of view, the envelope design must take into consideration both the
external and internal heat loads , as well as daylighting benefits. External loads include mainly solar
gains through windows, heat losses across the envelope surfaces and unwanted air infiltration in
the building. On the other hand the internal heat loads include heat released by the electrical lighting
systems, equipment, and people working in the building space. One of the goals of the envelope
design should be to introduce day-lighting into the interior space of the building through windows
and skylights, thereby reducing the need for artificial lighting. Proper sizing of the windows will help
in introducing the required daylight and reduce the need for artificial lighting.
8/8/2019 Building Envelope Latest
7/13
SCHOOL OF PLANNING AND ARCHITECTURE, M. B.E.M
TUSHAR KUMAR , SMRITI MOHTA , R PRASANNA VENKATESAN , SANKALP SEN SAXENA, SOUMYA BATCH 2010-2012E.S.I HOSPITAL, Sector -24, Noida
Building Envelope
METHODS OF ENERGY SAVING
Secondly, to maintain thermal comfort and minimize internal cooling/heating loads, the building
envelop needs to regulate and optimize heat transfer through roof, walls, windows, doors, and other
openings. Effective insulation of roof and walls, appropriate selection of glazing and framing for
windows, and suitable shading strategy are important in designing energy efficient buildings.
8/8/2019 Building Envelope Latest
8/13
SCHOOL OF PLANNING AND ARCHITECTURE, M. B.E.M
TUSHAR KUMAR , SMRITI MOHTA , R PRASANNA VENKATESAN , SANKALP SEN SAXENA, SOUMYA BATCH 2010-2012E.S.I HOSPITAL, Sector -24, Noida
Autoclaved Aerated Concrete (AAC) is effectively concrete with lots of closed air pockets in it. It
is lightweight and energy efficient, and is manufactured by the process of mixing Fly Ash, Quick
Lime, Cement and Gypsum along with water in a high speed mixer to form a slurry, a small
amount of foaming agent is added and mixed, and poured into moulds, then are wire cut into
blocks or panels from the resulting cake, and cooked with steam (autoclaving).
Autoclaved Aerated Concrete
AAC has moderate embodied energy content
and performs very well as thermal and sound
insulation, due to the aerated structure of the
material and the unique combination of thermal
insulation and thermal mass properties. AAC is
light, does not burn, is an excellent fire barrier,
and is able to support quite large loads. It is
relatively easy to work with and can be cut and
shaped with hand tools.
Blocks are made to very exacting dimensions and are usually laid in thin- bed mortar that is applied
with a toothed trowel, although more conventional thick-bed mortar
can be used. AAC has a long life and does not produce toxic gases after it has been put in place.
8/8/2019 Building Envelope Latest
9/13
SCHOOL OF PLANNING AND ARCHITECTURE, M. B.E.M
TUSHAR KUMAR , SMRITI MOHTA , R PRASANNA VENKATESAN , SANKALP SEN SAXENA, SOUMYA BATCH 2010-2012E.S.I HOSPITAL, Sector -24, Noida
Green walls provide multiple benefits when dealing with the
vertical space in urban environments. Many of the world's
existing installations appear to be primarily motivated by art,
and the visual impact they provide. This is important but we
believe there are sound ecological reasons to install green
walls:
reduction of thermal loading to buildings - lower heating and
cooling costs = lower carbon emissions
reduction of heat island effect - less reflected heat
stormwater attenuation - panels can absorb over 30kgs per
m2 of rainwater
air purification - plants are efficient filters of pollution -
especially when used indoors
noise attenuation - quieter buildings and streets
increased urban biomass - more green increases all of the
above
Green Walls
8/8/2019 Building Envelope Latest
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SCHOOL OF PLANNING AND ARCHITECTURE, M. B.E.M
TUSHAR KUMAR , SMRITI MOHTA , R PRASANNA VENKATESAN , SANKALP SEN SAXENA, SOUMYA BATCH 2010-2012E.S.I HOSPITAL, Sector -24, Noida
ecological habitat increased even with non-native plant
species positive urban psychology - uplifting effect on those
who see it positive upgrade (retrofits) to existing urban fabric
8/8/2019 Building Envelope Latest
11/13
SCHOOL OF PLANNING AND ARCHITECTURE, M. B.E.M
TUSHAR KUMAR , SMRITI MOHTA , R PRASANNA VENKATESAN , SANKALP SEN SAXENA, SOUMYA BATCH 2010-2012E.S.I HOSPITAL, Sector -24, Noida
Why create a double skin facade?
The idea typically comes up when discussing a tall building. Tall buildings lead to the desire to have
expansive views and a great deal of glass. If you create an all glass building, It takes a great deal of
mechanical ventilation, and thus energy, to keep it cool in the summer and warm in the winter. To
mitigate this setback, the concept of the double skin facade can improve the thermal comfort, acoustic
isolation from the exterior and potentially the energy efficiency of the building. In a nutshell, we're talking
about 2 layers of glass and intermediate space or cavity. The cavity is a space of mediation between the
interior and exterior environment.
8/8/2019 Building Envelope Latest
12/13
SCHOOL OF PLANNING AND ARCHITECTURE, M. B.E.M
TUSHAR KUMAR , SMRITI MOHTA , R PRASANNA VENKATESAN , SANKALP SEN SAXENA, SOUMYA BATCH 2010-2012E.S.I HOSPITAL, Sector -24, Noida
Warm or Cool Climates
In a cool climate, the solar gain in the cavity can be circulated into the occupied space to offset mechanical
ventilation requirements. In a warm climate, the cavity is vented; the hot air rises, vents out and pulls in cooler
air behind it. This cooler cavity space reduces cooling requirements within the occupied space.
Types
Box Windows: Consists of framed inward swinging window. The cavity is divided horizontally. Vertical
divisions of the cavity at every bay prevent the spread of sounds and smells from room to room. Suited for
solid facades with punched openings.
Shaft Box: Special form of box windowed facade. Facade alternates between box windows and vertical
shafts. Shaft-box facades require fewer openings on the outside layer. This system is best suited for lower
rise construction.
Corridor Facade: Intermediate space is closed at each floor. Special care should be taken to prevent sound
transmission from room to room via the corridor. Best where high levels of sound insulation is required
between rooms.
Multistory Facade: Intermediate space is open with horizontal division. In winter, the facade can be closed at
top and bottom to exploit the conservatory effect and optimize solar energy gains. Like corridor facades,
special care should be taken acoustically.
8/8/2019 Building Envelope Latest
13/13
SCHOOL OF PLANNING AND ARCHITECTURE, M. B.E.M
TUSHAR KUMAR , SMRITI MOHTA , R PRASANNA VENKATESAN , SANKALP SEN SAXENA, SOUMYA BATCH 2010-2012E.S.I HOSPITAL, Sector -24, Noida