In walkable roofs also includes those roof position on the building whose primary and constructive role is protecting the building from adverse weather conditions. Walkable roofs in architectural terms represent and height end of the building or some of its prominent parts. Also, walkable roofs in addition to its primary role and have the important and complex role of useful external construction area as a passageway for people - podium plateau, playgrounds, recreation and entertainment space, parking space for vehicles etc.