Pitti roofing consists of three families of elements: primary beams with an I- and H-section, secondary beams with V-section, which allow for obtain spans in excess of 30 m, and flat tertiary elements for completion in C.A.V. (slabs). This roof presents a sub-horizontal trend and is walkable. All elements of this system have resistance to fire up to R 180′. This type of roofing allows the illumination of the rooms below with indirect (sheds) and direct light (zenithal skylights). By appropriately arranging the tertiary elements on the tiles, it is possible to realize zenithal skylights or shed skylights depending on the required aeroilluminant ratios, while creating walkable paths useful for facilitate roof maintenance operations. In addition, the back of the shed lends itself to the installation of photovoltaic systems.
WATER OUTSIDE SYSTEM
Rainwater is collected on the V secondary elements (Pitti tile) and thanks to an appropriate system of structural slopes is conveyed inside the gutter beams and disposed along the perimeter of the building.
The waterproofing and insulation of the Pitti tile is the result of a careful and detailed design that took into account the following aspects:
- structural movements
- dimensional stability of products
- compatibility between different materials used
- resistance to compression during pedestrian maintenance
- system flexibility and variability
- resistance to solar radiation
- system durability over time
- easy maintenance.
All this allowed to make the right choice of materials from use, to arrive at the definition of their correct laying system, thus obtaining a system of insulation and waterproofing equipped of great reliability over time.