Sustainability and cost of a multi-story edifice, with CLT and LGS light weight floor system, at Neom-The Line

Abstract. Climate change and global warming, driven primarily by human activities, are urgent global issues necessitating immediate attention and action. The construction sector, responsible for nearly 40% of global greenhouse gas emissions, plays a critical role in these challenges. This study focuses on designing a sustainable multi-story edifice at Neom-The Line using cross-laminated timber (CLT) and light gauge steel (LGS) as lightweight floor systems. By comparing the carbon emissions of a CLT-hybrid building and an LGS-hybrid building, the study demonstrates the potential of sustainable materials in reducing CO2 emissions. Results indicate that the CLT-hybrid structure emits significantly less CO2 compared to the LGS-hybrid and traditional reinforced concrete (RCC) structures. The incorporation of photovoltaic (PV) glass further enhances the sustainability of these buildings. This research aligns with the United Nations' Sustainable Development Goals and Saudi Vision 2030, promoting sustainable construction practices and contributing to climate action.