The concept of sustainability today is really challenged , an item or concept that we as an architects or engineers have to keep in mind for future projects, the meaning of the Sustainability in ecology the word describes how biological systems remain diverse and productive over time. Long-lived and healthy wetlands and forests are examples of sustainable biological systems. For humans, sustainability is the potential for long-term maintenance of well being, which has ecological, economic, political and cultural dimensions. Sustainability requires the reconciliation of environmental, social equity and economic demands – also referred to as the “three pillars” of sustainability.