This course explores the concept of sustainability and dwell in detail to the growing popularity of sustainability and its implications for the practice of engineering, particularly for the built environment (civil engineering). At present there is a great boom in the infrastructure industry. An Economy of the nation is also based on the infrastructure of the country.  The Government of India focuses towards transforming the country’s infrastructure through various projects and mission such as, smart city mission, ATAL with the sustainability as the propelling principles. The current scenario in the booming construction industry has posed many challenges due to some unsustainable aspects of the highly polluting and the exhaustive nature of building materials. Globally it consumes 50% of all-natural resources and 40% of energy, and generates 50% of all waste. To build a square meter we need 2 tons of raw materials. India's building energy use accounts for 33% of the nation's energy use, and this is growing by 8% annually. The built environment has a significant impact on the earth, due to the high consumption of energy and raw materials such as steel, natural fine and coarse aggregate, cement, water, etc… and if left unchecked, buildings become sources of pollution, excess energy consumption, and even deforestation. Fortunately, research and development has achieved significant progress in construction and today it is possible to build sustainable infrastructure. It has also created opportunities for innovative and unconventional resources to emerge due to the widening gap in demand and supply of building materials, as well as the need for energy efficient and economical methods of construction. The key in promoting sustainability is to integrate it into the normal course of life for citizens, builders, developers, industrialists, decision makers, students and the teachers who are the torchbearers for the future.