GRIHA VERSION 2019 CRITERIA 3. DESIGN TO MITIGATE UHIE
INTENT
The intent of this criterion is to ensure incorporation of design strategies that will aid in the reduction of UHIE.
Maximum Points: 2
APPRAISAL
1.Demonstrate the temperature reduction (in °C) from the GRIHA base case as per the alternatives mentioned below.
Alternative 1
Demonstrate temperature reduction in the predicted hourly average air temperature (°C) from the GRIHA base case by performing calculations as per Table below.
| Reduction in Predicted Hourly Average Air Temperature (°C) | Points |
| 1.50 C ≤ base case | 1 |
| 2.50 C ≤ base case | 2 |
Alternative 2
Demonstrate that the difference in peak air temperature has been achieved through dynamic UHIE simulations from the GRIHA base case as per Table below.
| Reduction in Peak Air Temperature (°C) | Points |
| 10 C ≤ base case | 1 |
| 20 C ≤ base case | 2 |
COMPLIANCE
1.Submit a site plan (.dwg format) with legends, mentioning the building heights and external surface finishes such as soft paved/covered with high SRI paints/shaded by trees/vegetated pergolas/solar panels.
2.Submit purchase orders reflecting full quantities of high SRI paints/tiles, solar panels, etc.
3.Submit the technical specifications/brochures of high SRI paints/tiles, solar panels, etc., to demonstrate compliance with Appraisal 1.
OR
Submit a valid GRIHA Product Catalogue certificate as applicable for the products used.
4.Upload date-stamped photographs with the description of the measures implemented within the site premises
5. For alternative 1 submit calculations using GRIHA UHIE calculator to demonstrate compliance.
6.For alternative 2 Submit a simulation report (along with input and output files) to demonstrate compliance.