In the late 20th century a new concept was added to those included in the compass of both structure and function, the consideration of sustainability, hence sustainable architecture. To satisfy the contemporary ethos a building should be constructed in a manner which is environmentally friendly in terms of the production of its materials, its impact upon the natural and built environment of its surrounding area and the demands that it makes upon non-sustainable power sources for heating, cooling, water and waste management and lighting. COUNT 4
QSN1 When was the conecept, Sustainable architecture used? ANS1 late 20th century QSN2 What novel concept was introduced at the end of the 20th century? ANS2 sustainability QSN3 To what should a building be friendly? ANS3 environment QSN4 What sort of power sources should a building not overuse if the building is to be considered environmentally friendly? ANS4 non-sustainable power sources