This technical guides deals with environmental issues facing every architect at the concept stage of designing a building. Used during the initial design stage, the unique manual design tool, LT Method (2.1), helps the architect determine the energy efficiency of alternative design schemes. It predicts the energy use for lighting, heating, cooling and ventilating. Explaining the principles behind the LT Method, this book will give designers the confidence to develop their own response to energy efficient design. In addition, the book deals with other environmental issues such as noise, thermal comfort and natural ventilation design. A variety of case studies provide a critique of real buildings and highlight good practice.