IRRAD-sustainable development, environmental goals,zero runoff from the site,daylight and ventilation, photovoltaic panels, minimize the ecological foot print and carbon dioxide emissions,shading device

1. •Building is north-south oriented.
•Reduced solar radiation on longer facades.
•.
SUNPATH
Summer winds
SUSTAINABLE DESIGN •Solar radiation cut-off by
shading devices
Phase-1
Phase-2
N
•Eastern -Western facades are thermal buffer
zones, receives maximum insolation.
•Direction of prevailing winds is North-West.
Winter winds
Monsoon breeze
THERMAL BUFFER ZONE
•Inclined louvers
structure
restricts excess
wind flow
indoors.
• Reduced need
of artificial
ventilation.
•On surface parking capacity-39 cars
•Preferred parking spots near to the entry gate
for carpool and vanpools(5% of total parking).
•Surface shaded parking.
•Optimum daylight at basement parking, reduce
need for artificial lighting.
•Car charging points at basement parking.
•Parking capacity in basement -29 cars
Identification Area (SF)
Length
(F)
Total
watts
ASHRAE
90.1.2004
Allowable
LPD (W/F)
Actual
LPD (w/sf)
, (w/f)
Complies
(Yes/No)
Parking 5505.31 _ 108 _ 0.02 Yes
Driveways 14013.43 _ 414 _ 0.03 Yes
Walk ways land
ramps less than 10 ft 0 422.72 108
1.0W/linear
foot 0.26 Yes
walk ways more than
10 ft 1466.26 _ 36 _ 0.02 Yes
Green areas (Special
feature) 6520.992 _ 1168 _ 0.18 No
stairways 342.4 _ 108 _ 0.32 Yes
ramps (walkways
more than 10ft) 1322.514 _ 108 _ 0.082 Yes
water body (Special
feature) 37.45 _ 15 _ 0.4 Yes
building entrance 0 10.17 0
20W / linear
foot of door
width 0 Yes
30W / linear
foot of door
•Providing minimum & adequate site
lighting while avoiding off site lighting &
night sky pollution.
•Efficient outdoor lighting
fixtures, minimizing light
trespass.
Light power
density
calculation for
exterior areas
•Roof shaded by pergola & tensile
structure.

2. SUSTAINABLE DESIGN
ROOF GARDEN
OVER BASEMENT
•Landscaping: A Micro climate has been setup by growing
trees, roof garden & vegetation around the buildings.
Heat absorbed by roof surface
•Exterior Roof Assembly: From outside to
inside, wall construction consists of 13mm
Broken China Mosaic,65mm Brick, 50mm
PUF (R-13), 9.5mm screed, waterproofing,
and 203mm” concrete slab on the interior.
•U-assembly = 0.064 Btu/h-ft2-F
•Windows: The window-to-wall ratio of the
proposed office building is 19.84%.
Building Envelope
•Exterior Wall Assembly: : From outside to inside, wall construction consists of 45
mm Stone cladding, 40 mm PUF {For South-East Wall(EWall3-C) 40 mm Cavity},
230 mm brick 15 mm cement mortar.
•U-assembly(For South -East) = 0.274 Btu/h-ft2-F
•U-assembly(For all other sides ) = 0.079 Btu/h-ft2-F
•Mud brick walls
are not painted.
CERAMIC TILES &
JIRAWAL GRANITE
• Roof treatment to reduce heat gains
Type Glazing
Window Properties Glazing- Double Clear
Window (Assembly)
U-value (in Btu/h.ft2.ºF)
0.33
Visible Light Transmittance 71%
Solar Heat Gain Coefficient 0.51
Efficient interior lighting
•High SRI materials used on roof surface. •The luminaires are suspended 600mm below the ceiling level.
35®
NO LIGHT TRESSPASSES
•In plan, where the luminaire is placed parallel to the window the
maximum intensity beam is directed downwards at 30º (gamma)
It can be seen that the maximum intensity luminous beam intersects
the opaque surface and does not pass through the transparent or
translucent surface; hence no light trespassing is caused.
•The maximum candela value of all interior
lighting falls within the building (not out through
windows).
Heat island effect on site
Heat absorbed by paving
Less radiation due to shading
Heat absorbed by paving
Heat
reflected
Heat reflected due to
high SRI material

3. •Total HVAC energy cost savings of
approximately 9% of total 47.3% savings.
Air Handling Unit
Hybrid approach of air conditioning Systems
ENERGY
Radiant slab
•The Radiant Slab counters the Sensible
Load and
•The AHU counters the Latent Load.
Controlling Parameters
•Modulation of Mixing Valve installed on the
common Header Radiant Header.
•Controlling of Re-circulating for Radiant
Cooling System.
)
Radiant
Slab System
VAV
System
Water recirculation pump
(for radiant slab)
Chillers
Upstream
•Variable air volume (VAV) controlled fans were
provided.
•Restrooms are facilitated with an exhaust flow,
and staircases are naturally ventilated
Air Handling Unit
The position and size of the space for
air conditioning or air outlets has to be
checked
pipes near the manifold with a spacing of less than
15cm and pipes outside the chilled slab led in
corrugated pipe
Radiant slab
This system consists of running chilled water pipes
embedded in the ceiling slab. Sensible load cooling
using radiant chilled water pipes in the slab operating at
15– 19°C differential chilled water temp & latent load
using Air handling unit operating at 6.6 – 12.2°C
differential chilled water temp. 6.6°C chilled water shall
be produced by chiller and 15°C chilled water shall be
produced by using Heat exchanger having input water at
6.6°C from the chiller.
Controls
Monitoring Parameters
• Slab Temperature Monitoring.
•Room Temperature Sensor.
•Room Humidity Sensor.
•Common Header Temperature in Radiant
Piping system.
Elements of fire fighting system
•Hydrant & sprinkler pump
•Jockey pump
•Fire alarm& sensors
•Hose reel
•Diesel engine pump

4. Sound(db) level measurement
COMFORT
•Reduced level of noise indoors.
CFM measurement
•Maintained air flow circulation indoors.
• No automobile or industrial pollution to the site.
•IRRAD phase-2 – is a mechanically ventilated space.
•High efficiency pre‐filters and bag filters are being provided in
supply air stream of all AHU’s to remove any contaminants from
outside air.
location of co2 sensors
•System for Co2 monitoring in phase II measure Co2
differential between indoor and outdoor Co2
concentrations for each zone.
•30% increased ventilation
Control measures to prevent indoor air quality
problems during construction.
1. HVAC protection- properly covered up, remain free from dust & grime.
5. Scheduling- construction activities
over the duration of the project
minimize the impact on the indoor air
quality.
2.Source-Low toxicity is maintained by using low VOC complaint materials.
3. Pathway- Temporary barriers used to isolates area of work of construction.
4.Housekeeping-electrical panels should be covered with
water proofing covers to protect from water entry.
•Construction workers
are provided with
helmets.
•Low emitting materials used.
•Roll out mats at the entryways
minimize dirt and particulates
from entering the building.
Visual comfort-Daylighting
Indoor air quality •Sufficient Daylighting in all spaces.
Office/cabin Common room
•Indoor plantation to
improve air quality
indoors.

5. WATER
•Water efficient fixtures & fittings
• 50% water efficiency in air conditioning system
•Landscape which uses captured rain and recycled
site water to eliminate portable water consumption
for irrigation.
Measures adopted to reduce waste
and decrease the portable water
demand
•Use of low flush fixtures
•Use of STP treated water for flushing
Rain water harvesting system
Rain water recharging pit
Preserving site features:
Measures followed before construction:
•Top Soil Conservation
•Wise disposal of excavated soil
•Measures followed during construction:
•Dust control measures
•Barricading
•Gravel pit was constructed
•Preservation of existing vegetation
•Site management plan
•Measures followed post construction:
•Growing vegetation
• Rain water harvesting system (sedimentation
basin)
Gravel pit was
constructed
Top soil conservation
Pebbles & grass pavers to
minimize Storm water
runoff.
Preserving trees