The Three Spheres Of Sustainability

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1.1 Introduction :
1.1.1 What is sustainable development?
“Development that meets the needs of the present without compromising the ability of future generations to meet their own needs."
Economic development that is conducted without depletion of natural resources.
Sustainable development is about finding better ways of doing things, both for present and future. Figure(1.1.1) The Three Spheres of Sustainability
1.1.2 Non sustainable factor :
Ineffective institutions
Insufficient monitoring, Surveillance
Unclear access conditions, Ownership
Technology unwisely implemented
1.2 Motivation :
Sustainable design is mostly a general reaction to global environmental crises, the rapid growth of economic activity and human population, depletion of natural resources, damage to ecosystems, and loss of biodiversity In 2013, Eco architecture writer Bridgette Mein hold surveyed emergency and long-term sustainable housing projects that were developed in response to these crises in her book, “Urgent Architecture: 40 Sustainable
Solutions for a Changing World.”Featured projects focus on green building, sustainable design, eco-friendly materials, affordability, material reuse, and humanitarian relief. Construction methods and materials include re purposed shipping containers, straw bale construction, sandbag homes, and floating homes.
This design practice emphasizes efficiency of heating and cooling systems; alternative energy sources such as solar hot

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