This document summarizes the sustainable features of the Infinity Benchmark building in Kolkata. It has high insulation in its external walls and roof to reduce energy usage. It uses double glazed windows, efficient HVAC and lighting systems, a building management system, and water efficient fixtures. Sustainable materials are also used, including those with recycled content. Waste is segregated and stormwater is reused. Indoor air quality and thermal comfort are prioritized.

1. I N F I N I T Y
BENCHMARK
Geetika Singla
K O L K A T A

3. Last certified on: August 07, 2009
Certification level: Platinum

5. Building Envelope
• External walls and roof have high insulation property
• External walls made of brick wall block with 4 inch
expanded polystyrene insulation ACP cladding
• U-factor 0.073 Btu/hr.ft2
• Roof has under deck insulation with 30 mm of rigid
polyurethane foam
• Terrace garden on roof top reduces heat island effect
• Use of overhangs on selected facades reduces the direct
solar gains through glazing.
• High performance glazing catering to 36 of total building
facade

6. High Performance Glazing
• Double glazed glass units increase energy efficiency of
building
• Less heat ingress into the building
• Better transmission of day light into occupied spaces
• Provides external connectivity to occupants
• Use of overhangs on selected facades reduced direct
solar gain through glazing
• Glass characteristics
1. U Value 2.64 W/m2 K
2. Solar heat gain coefficient 0.2
3. Visual Light transmittance-0.23

8. Eco-Friendly Energy Efficient Equipment
• Consume 25% less energy
• CFC free refrigerant to avoid ozone depletion
• HVAC equipment has been designed with no
compromise on human comfort levels
• Energy efficient water cooled chillers with CoP value of
6.3
• Primary secondary chilled water pumps with variable
speed drive to economize pump energy

9. Building Management System
• Optimized energy consumption resulting in operational energy
savings of 15-20%
• Typical examples of energy saving through BMS integration
• Night time purging to cool the building
• Chiller management
• Controlling AHU fan speed and chilled water pumps based on
heat loads
• Temperature, humidity and lighting control
• Monitors and controls indoor comfort condition
• Automatically monitors amount of fresh air that enters the
spaces
• Can also track occupancy status of each zone and accordingly
adjust fresh air flow
• Provides alarm systems so as to take corrective actions

10. Efficient Lighting
• Use of energy efficient fluorescent lamps (T5s) and
luminaries with high coefficient of utilization
• The interior lighting designed with overall lighting
power density less than 1.0 Watts per sq ft
• Minimized light trespass from the site to increase night
sky access and improve night time visibility
• External lighting designed to reduce the development
impact on nocturnal environments

11. Eco-Friendly Vehicle Charging
• Provision of 13 electric car charging points
• Reduces pollution and land development impacts from
automobile use
• Cost effective and environment friendly means for
commuting to work

13. Water Efficient Fixtures
• Consume 40% less water
• Water efficient flow flush fixtures are used in the entire
building
• Reduces burden on municipal water supply and waste
water systems
• Reuse of storm water and treated grey water for non-
potable applications such as toilet, flushing and
irrigation

14. Waste Collection Segregation
• Reduction of building waste diversion to landfills
• An easily accessible area in each floor is dedicated to the
collection and storage of non hazardous materials
• Separation of dry waste and wet waste materials at
source
• Segregation and storage of dry wastes such as paper,
cardboard, glass, plastics and metals to facilitate
recycling

16. Indoor Environmental Quality
• Occupants provided with superior indoor air quality
through energy efficient HVAC equipment
• Air conditioned spaces are maintained at 24 degree C
and 50 - 60 relative humidity through out the operation
of building
• CO2 levels and fresh air quantities are continuously
monitored and maintained at a pre-determined value to
enhance the productivity of the occupants
• Adhesives, sealants, paints, resins used in the common
areas have low volatile organic compound (VOC) content
• Day lighting views enhance productivity of occupants

18. Building Materials
• Use of construction materials having 20% recycled
content and 20% locally available
• Use of recycled materials reduced the impacts resulting
from extraction and processing of new virgin materials
• Illustrative list of materials with recycled content
1. False ceiling material made of industrial waste
- gypsum
2. Door panels made of bagasse
3. Aluminium door and window frames have high
recycled Aluminium content
• Use of 100% FSC certified wood for all wooden
components