Estidama Extension


Estidama is a sustainable urban planning initiative developed by the Abu Dhabi Department of Urban Planning and Municipalities. Estidama uses a green building rating system called the Pearl Rating System that is utilized to evaluate sustainable building development practices in Abu Dhabi. The Estidama program is mandatory in Abu Dhabi, United Arab Emirates: all buildings must achieve a minimum 1 Pearl Rating, and all government-funded buildings must achieve a minimum 2 Pearl Rating.

DL-Light extension Estidama Sketchup model

We present here only the targets focusing on Daylighting for the 3 categories of building identified in Estidama (Schools, General or Residential).

Within Estidama the calculation of illuminance levels (lux) should be performed for 6 differents moments corresponding to "summer equinox and solstice" at 10am, 12am and 2pm (as specified in the standard).

The requirements for the 3 categories of buildings are:

Estidama requirements
source: The Pearl for Estidama - Building - Design & Construction - Version 1.0.

In its Estidama module DL-Light chains these 6 calculations to provide the aggregated result corresponding to the Estidama requirements. It also provides the 6 individual results to allow for further investigation to improve the project.

Because of these 6 chained calculations the aggregated results required by Estidama necessitates intense computation that may be compared to the calculations of 6 Daylight Factors one after the other. Moreover, Estidama indicates that simulation should be performed using 7 bounces of natural light.

Hence the calculation time needed is higher than for other metrics.