Sustainability Assessment of an Existing School Building in Ifrane Morocco using LEED and WELL Certification and Environmental Approach

Abstract

The purpose of this research project is to evaluate the sustainability and energy performance of an educational building in Ifrane (Morocco), with the establishment of environmental certifications such as EA6 credit and MR3 credit of LEED v4. This evaluation is based on WELL v2 tool. The energy performance assessment is achieved by Design Builder software which allows creating the reference point building (building complying with ASHRAE 90.1 standards). The results show that energy consumption of the studied building is 220.75 kWh/m2. While for the reference building, the energy consumption is estimated to 277.7 kWh/m2. Therefore, the achieved savings of 20.5% consents attainment of a relevant score of 9 points according to the LEED v4 reference. The environmental impacts are evaluated using the attributional Life Cycle Analysis (LCA) approach by means of: OneClick LCA software, ecoinvent, GaBi database and the CML method. The Carbon footprint of the baseline construction showing results is numerically higher with an estimated value of 58.79 kg CO2e/m2/year while the proposed building was estimated at 15.58 kg CO2e /m2/year. according to the results of the analysis of the building's life cycle impact, the energy consumption can greatly increase ADP-Fossil results that achieve a score of 3 points according to the MR Credit 3 of LEED v4 tool. In addition, according to WELL v2, we note that the notion of sustainability is strongly present at the level of the educational building in Ifrane. In this scope, the building is obtaining a score of 1 point for concept L03, 1 point for L08, 3 points for V03, 2 points for V06, 2 points for V08 and 2 points for M09.