GRIHA for Existing Buildings (EB)

Criterion 1: Accessibility to Basic Services

• (#8051) Number of parking spaces provided on site
• (#7819) Site parking requirement

Criterion 2: Microclimatic Impact

• Parking area should be covered by any structure with high SRI material on roof?
• What about parking areas? It should be covered or tree shaded?
• What do you mean by SRI coatings?

Criterion 3: Maintenance, Green Procurement and Waste Management

• (#8895) GRIHA for Existing Building, Criterion 3 (Maintenance, Green Procurement and Waste management)
• (#8197) Multiple queries for areas under tenants scope in existing building
• (#7821) Lack of dedicated maintenance staff

Criterion 4: Metering & Monitoring

• (#8987) GRIHA(EB) manual, it is mentioned to use Digital water meter as mandatory metering.
• (#8956) GRIHA EB manual states to "install one-way communicable smart meters and monitoring system
• (#8051) Water meter at STP
• (#7821) Basic and extended metering requirements
• (#7816) Advance metering requirement
• How two way communication system work by GRIHA?

Criterion 5: Energy Efficiency

• (#8197) Equipment and meters under tenants scope in existing building
• (#8194) Submission requirement for energy consumption
• Please explani no cost EEMs, in apprasial 5.1.2
• Do we have to do calibrated energy simulations for the Energy credits? Or just implement the ECM's?
• Are points awarded for use of emission reduction from diesel generators by the use of emission control technologies?
• What is EEm's?

Criterion 6: Renewable Energy Utilization

• 2.5% of solar energy consumption seems to be huge for high rise commercial building, it would be difficult to meet mandatory criterion. Any alternative option for meeting this criterion?

Criterion 7 : Water Footprint

• What rainfall should be considered while calculating rainwater harvesting system?
• Base case for landscape will be 100% lawn areas?
• Base case for flow fixtures will be as per GRIHA baselines from current book?

Criterion 8 : Reduction in Cumulative Water Performance

• What is meant by cumulative water performance?
• Base case for landscape will be 100% lawn areas?
• Base case for flow fixtures will be as per GRIHA baselines from current book?
• What about cooling tower water use? Do we get any extra credit for this?

Criterion 9: Achieving Indoor Comfort Requirements

• Can ECOTECT radiance be used for daylight simulation?
• Daylight strategies for existing buildings
• Also both daylight measurement and simulation has to be performed for daylight compliance?
• If it’s an air-conditioned building Temperature and RH has to be taken?

Criterion 11: Universal Accessibility & Environmental Awareness

• How providing facilities for construction workforce helps in rating of exiting building, is it valid?