As I've stated in the previous article I've managed building's disposition in order to exploit solar radiation for heating in winter. So every building has a long facede south-facing and in every apartment, most important rooms are south-facing. As shown in the images below every building has an optimal solar radiation as in winter (image1) than in summer (image2). In summer, on the other hand, we need to protect apartments from heat. Therefore we wil design projections in orther to shield at least transparent surfaces.