The document details the design and features of a green office building established in 1974, focusing on energy efficiency and sustainable resource use. Located in Domlur, Bangalore, it incorporates renewable technologies, effective ventilation systems, rainwater harvesting, and innovative materials to minimize environmental impact and optimize indoor air quality. The building layout includes shared areas for a guest house and an office, aiming to reduce operational costs and energy consumption significantly.

1. INTRODUCTION :
 ESTABLISHED IN 1974.
 PROJECT IS DESIGNED TO HOUSE AN OFFICE BLOCK WITH
WORKSTATIONS AND A SMALL GUEST HOUSE ATTATCHED TO IT.
 CONCERNED WITH EFFECTIVE UTIIZATION OF ENERGY, SUSTAINABLE
USES OF NATURAL RESOURCES, LARGE SCALE ADOPTATION OF
RENEWABLE ENERGY TECHNOLOGY.
LOCATION :
 LOCATED AT DOMLUR BUS STOP (3KMS FROM BANGALORE
AIRPORT ROAD), AMIDST A RESIDENTIAL AREA, PARK AND
TEMPLE.
ORIENTATION:
 BUILDING IS ORIENTED ALONG NE-SW DIRECTION.
 SW IS THE PRIMARY WIND AND LIGHT DIRECTION FOR
BANGALORE.
SITE FEATURE:
 LONG NARROW SITE WITH ROADS ON THE EASTERN AND
NORTHERN SIDES.
 WESTERN SIDE HASS AN OPEN GROUND.
 SOUTHERN SIDE HAS AN OPEN DRAIN.
 SITE LOCATED ADJACENT TO A FOUL SMELLING DRAIN
SITE ANALYSIS:
ZONING:
 ENTRY TO THE BUILDING IS FROM THE ROAD ON THE
NORTHERN SIDE, WHICH IS LESS BUSY COMPARED TO THE
ONE ON THE EAST.
 THE OFFICE BLOCK IS KEPT TOWARDS THE EAST, CLOSE TO
THE MAIN ROAD FOR HIGH VISIBILITY AND THE GUEST
HOUSE IS LOCATED ON THE QUIETER WESTERN SIDE.
 THE DINING HALL AND RECREATION AREA ARE SHARED
BY THE OFFICE AND THE GUEST HOUSE.
 THE OPEN SPACE BETWEEN THE OFFICE AND THE GUEST
HOUSE CAN BE USED FOR FUTURE EXPANSION EITHER OF
THE OFFICE BLOCK OR THE GUEST HOUSE.
 THE BUILDING HAS BEEN DIVIDED INTO INDIVIDUAL
AND COMMON AREAS.
 60-70 INTIMATE SMALL SPACES ARE PROVIDED FOR
INDIVIDUAL WORK.
BUILDING DETAILS :
 THE GREEN BUILDING GOALS ARE ACHIEVED WITH INNOVATION AND DETILING.

2. 1.Reducing environmental impact:
>The proposal addresses not only Thermal comfort but also Visual
appeal & environmental issues
>LESS usage of natural energy by means of promoting the local climatic
condition like using Cavity wall in the south .
>Promoting passive solar & ventilation in the interiors.
>With green roof is used above the spaces where the AC system is used
>Waste are used as in the form manure for the landscapes.
>Wide of variety of landscape are used to absorb the CO2 produced in
the building .
>Building with Low embodied energy materials.
2.Life cycle assessment (LCA):
>As use of local materials reduces the energy consumed in their
transportation , local materials and materials with low embodied
energy have been used wherever possible.
>The operation and maintained cost is considerable high with
respective Towards the Human comfort
>Disposal or recycling of the waste product is achieved with treatment
Plants
>Impacts like embodied energy, global warming, resource use, air
pollution, water pollution, and waste are taken into account in
Promoting the efficiency of the building in various building detailing's .
3.Siting and structure design efficiency:
>The concept stage is taken into account of deciding the cost and
performance of the building .The cost is reduced with the effective use
Of local materials and with the proper usage of landscaping in heat
reduction thus creating thermal comfort in south.
>In designing environmentally optimal buildings the objective is to
minimize the total environmental impact.
4.Energy efficiency:
>The elemental forces of earth, wind, fire and water are imperative to
the architectural design of the building. It opens towards the northern
side facilitating access to glare-free light. A solar wall towards the south
(drain side) of the building directs the flow of the breeze over the
building, which, in turn, creates a negative pressure and pulls fresh air
from the north into the building.
SUN-for water heating , electricity generation . Creating a stack effect
using Solar Chimneys
SKY-for daylighting and also as a heat sink
AIR-to create convection currents within the building through wind-
induced vents ,use of stack effects
EARTH-for roof gardens and earth berms for insulation
WATER-for rainwater harvesting, roof ponds and fountains for
humidification.
>photo voltaic cells are used to capture the suns energy thus generating
electrical energy for the various stations. These photovoltaic cells have
been arranged in line with the primary orbit of the sun the panel are
integrated with dynamic truss to optimize the generation of energy.
>the suns energy is further used in the form of solar heaters which is used
to generate all the hot water in the guest house.
>the thermal comfort levels are maintained by the use of filler slabs
which provides insulation between the inside and the outside of the
building.
>filler slabs are designed with alternate panel of concrete and hollow
blocks.
>the hollow blocks help in reducing the transmission of heat from
outside to inside of the building.
SUN:

3. AIR:
>Primary wind direction along sw.
>A long sw façade is a foul smelling drain.
>wall towards south is blank allowing the breeze to flow over the
building which in turn creates negative pressure and pulls in fresh air
from the north.
>south wall is a double wall so as to heat up the void between the two
walls creating negative pressure thereby enhancing convection
currents.
>ventilation is enhanced by the use of solar chimneys and vents.
>allows breeze to flow over building.
>creates negative pressure.
>starts pulling fresh air flow at body level to provide thermal comfort.
>hot air rises towards the top on southern façade.
UNHYGENIC FOUL
BREEZE FLOWING
FROM SOUHT
COOL BREEZE DOWN IN BY
CONVECTIONALCURRENT
SYSTEM TO EQUALISE
PRESSURE
DAYLIGHTING
>Openings have been designed such
that requirement of artificial lighting is
minimal throughout the day when the
building is under maximum usage.
>By creating atrium spaces with
skylights, the section of the building is
such that natural light enters into the
building, considerably reducing the
dependence on artificial lighting.
>abundant natural light inside due to intelligently
designed fenestrations.
>By creating atrium spaces with skylights, sections
of the Centre are designed in such a way that
natural daylight enters into the heart of the
building, considerably reducing the dependence
on artificial lighting. This is supplemented by a
skylight roof and energy-efficient artificial lighting.
5.Water efficiency
>the central court which connects the office
complex and the guest house section plays an
important role as a space generator.
>the central court houses an amphitheater that acts as an informal
gathering. but more importantly it holds within it the rainwater
harvesting sump for the whole complex.
>An efficient rainwater harvesting system
preserves water to the maximum possible extent. Water run-off from
the roof and from the paved area is collected and stored in a
collection sump below the Amphitheatre.
>This water is used for landscaping & in toilet
Roof top rain
water collection
point
Rain water drainage
to collection point
ADMIN BLOCK
GUEST
HOSUE LAWN
PARKING

4. Earth :
>the building has been designed with landscaped courts at various
levels these courts help to enliven the working environment as well as
enhance the micro climate within the structure
>the various level of terraces also have been landscaped which
reduces the heat exchanges and heat flow between the structure and
the outside environment hence act as good insulation device. having
this ground cover on the roof further reduces the impact on the
environment through photosynthesis
>As thermal capacity of earth is high, daily and annual temperature
fluctuations keep decreasing with increasing depth of earth
At depth of 4m below ground, temperature remains constant and
equal to annual average temperature
Earth berm is created
to retain the heat
6.Materials efficiency:
>As use of local materials reduces the energy consumed
In their transportation ,local material and material with low embodied
Energy have been wherever possible
>Energy efficient lighting devices like CFL lights have
Also been used
>Filler slabs are designed with alternate panel of concrete and hollow
blocks,
The hollow blocks help in reducing the transmission of heat from
outside to inside of the building.
>Use of double glazed windows with coating
>Use of cavity wall construction with CADAPPA STONE which is a heat
retentive material
>Terrace garden helps in insulation , reducing radiation as well as
moderating temperature fluctuations
>Roof consists of a hollow loft space which reduces conduction of heat
to work areas.
>With a simple technique of self shedders are being used in the North
FAÇADE to reduce the heat gained into the designed spaces

5. Ventilation Analysis:
>The primary winds blow from the south to north
over the nallah, hence the building needs to
react to this if, the foul unhygienic air has to be
prevented from entering the building .
>Thus the development of the south wall was a
prime design factor in achieving this purpose.
>Here the south wall has was treated as an
independent system linking the rear walls of the
building over a cavity
>This cavity creates a negative pressure setting
up the convectional currents. The entire systems
works very effectively in generating the desired
reverse wind circulation.
>The blank wall carries a system of cudappa.The
color black was deliberately chosen because of
its heat absorptive power which is the highest
among all colors.
>The working of the system is very simple. The sun’s rays heat the black
south wall increasing the temperature of the immediate environment
around.
>This causes the air in the cavity to rise upwards naturally. These
convectional currents are blown away by the winds blowing south to
north.
>This creates a vacuum at the at the top core structure. To fill this
vacuum, air from inside is drawn up.
>This system of hot air rising and drawing in of cool fresh air is a
continuous process.
7.Indoor environmental quality enhancement:
>Indoor Environmental quality is very well achieved with the help of non
Voc Paints and local flooring material with less embodied energy.
>Indoor air quality is very well maintained with effective technique and
Use of cavity wall in south to heat up the interior air.
>Occupant comfort is achieved with
 CONDUCTION & RADIATION as external agent
 BODY HEAT & AIR FLOW as internal agent
>Plants are being used in the interior common connecting spaces for
refreshment and air Circulation .
>Proper maintances is taken care in the interior to make an HYGNIC
living
>North ligating is provided for glare less lighting system and its made to
be used in the workspace areas.
>Mixed use of vegetation is been used to make the campus green and
fresh .
>Solar Chimney plays an major role in maintain constant air flow in the
interior
>Ventilation plays a major role in creating comfort ness in the interior

6. 8.Operations and maintenance optimization:
>The monthly energy consumption is about rs.30k For the entire complex.
>this works out to be around rs.1,12/sq.ft which is About 1/10 of a
conventional building with air Conditioning in bang lore thus providing
the energy efficiency Of the complex
>as and when the drain to the south gets cleaned The compels can also
open out towards it.this Would provide the complex with its own water
front
>A 5 kw peak solar PV system has ben planned which will be integrated
with the roof skylights. The pv roof will provide daylighting and generate
electricity as well .
>Landscape maintaining and operation is being reduced when
compared to the design initial stages
9.Waste reduction:
>In addition to basic filtration and
aeration, it has been proposed that
certain impurity-absorbing plants be
planted in the vicinity of the drain,
improving its condition in terms of
sanitation and aesthetics. Investing in
10.Cost and payoff :
civil , sanitary , plumbing cost tendered at rs.21.9 million
11.Regulation and operation.
12.International frameworks and assessment tools
such a long term, yet permanent solution is necessary if the building is
to eventually open towards the drain as well.
>The central court houses an amphitheater that acts as an informal
gathering. but more importantly it holds within it the rainwater
harvesting sump for the whole complex and serves to landscape &
toilet flushing waters
 Sets a new standard of energy efficient, environmentally conscious
office space
 Building conveys intelligent work of natural elements with the
building form to fulfill the goals of green building
CONCLUSION: