Necessity and Methods of Designing Green Buildings in Cities and its Effect on Energy Efficiency

Population growth, increasing development of cities and subsequent destruction of green spaces and finally an increase in air pollution and global warming, have increased the need to find ways to coexist with the natural conditions, conserving energy, preventing land pollution, protecting the environment and reducing energy consumption. In order to increase green space in urban areas and greater energy efficiency in buildings, especially in cities, attitudes and new approaches of modern architecture are one of the strategies toward green architecture which has attracted the attention of many contemporary designers and architects in the world in recent years. This architecture is derived from the concept of sustainable development in harmony with environmental compatibility in order to meet the needs of people, step for the survival of human interaction and environment. To create green buildings, after examining the need to use them, first, we must be familiar with the principles of green architecture and then proceed to the design and construction. This paper attempts to investigate different parts of a building (green views, indoor and outdoor living walls, green walls and green roofs area), due to the possibility of planting and principles of construction. Then by examining samples of green buildings in the world today and expressing characteristics and their impact on the environment, some steps should be taken towards creating healthy cities and reducing energy consumption