*3.1.4. Sustainable architectural design*

The best project solution will come as a result of a well-organised design process, a carefully selected design team, a precisely defined end goal, a study of applicable principles and model testing.

#### *3.1.5. Application of the principles of passive solar architecture*

Appropriate location, selection of a site with good solar access, proper orientation with building's position towards solar gain during winter and limited western exposure in the summer, compact spatial concept, natural lighting, shading (natural and architectural), thermal mass, preheating, double envelope, well-dimensioned thermal insulation made of environment-friendly materials, air permeability, natural ventilation, solar chimneys and solar walls and system optimisation are the basic principles of passive solar architecture.
