GIARDINI D'INVERNO, Via Pirelli, Milan

A high-standard residential building consisting of 6 underground levels used as parking, storage, technical rooms, and services, 15 floors for living, with the first-floor surfaces allocated for shops and restaurants, a rooftop terrace with a pool and bar/restaurant, totaling approximately 38,000 m2 of horizontal surface, consisting of: a basement of 21,000 m2, and above-ground decks of 17,000 m2

A distinctive feature of the project was the presence of partially constructed structures below ground level, which were reinforced and integrated into the design of the new basement. The foundation consists of a solid reinforced concrete slab designed to counteract the hydraulic pressure of the groundwater level and is built on existing supports.

The first floor consists of a rigid reinforced concrete slab with variable thickness, from a minimum of 35 cm to a maximum of 85 cm, capable of supporting the building that overhangs the ground, with structural grid lines that do not align with the lines of the basement floors.

The above-ground part of the building is shaped like the letter "C", extending over an area of approximately 1600 m2 and essentially consists of three sections of varying heights, with a maximum span of up to 16 floors.

The structural scheme of the building includes staircases and lifts made of reinforced concrete, designed to withstand horizontal forces, hinged columns that carry only vertical loads, and reinforced concrete slabs with a typical thickness of 22 cm, with plastic hollow fillers and extended spans of up to 3 m.

Steel elements integrate the main reinforced concrete structure and are used for the construction of the penthouse roof, columns in the lobby on the first floor, grilles, and some staircases connecting the floors.