New “Bovio Ricambi” offices building and store
Technical services: Structural execution plan, site survey and shop drawings
One storey steel structure made of cantilever columns and a cylindrical roof realized by means of bi/tri-dimensional lattice structures.
The new “Bovio Ricambi” offices building is a two storeys structure: the first storey, 5.70 m high, is made by a precast concrete structure; the second storey, 7.80 m high, is made by a steel structure. Within the second storey there is an intermediate level, that occupies only a portion of the office building area, used as a store, partially supported by columns and partially hanging down the roof.
The building dimensions are 81.3 m x 18.6 m x 13.5 m (length x width x height); the surface of the roof is cylindrical, with the axis of the cylinder parallel to the building length.
The elevation of the second storey is made by vertical steel columns, fixed at the top of concrete columns of the first storey and arranged on a rectangular grid, whose dimensions are approximately 11.60 m x 8.35 m. The horizontal, wind and seismic, forces are resisted by flexure of cantilever columns in transverse direction and by two bracings in the longitudinal direction.
The roof is made by:
- Primary beams. The primary beams are made of planar and tridimensional lattice beams, realized with circular hollow sections. The tridimensional lattice beams have two top chords, CHS 168.3, connected each other by means of CHS 60.3 transoms, and one bottom chord, CHS 219.1, connected to the top chords by means CHS 60.3 wall members. The planar lattice beams have a CHS 168.3 top chord and a CHS 168.3/CHS 219.1 bottom chord, connected by means of CHS 60.3 wall members.
- Secondary beams are realized with square hollow section beams, SHS 175x175; the transverse beams are curved to follow the roof cylindrical shape; the additional longitudinal beams are straight. The roof is completed by ø36 bar tendons, used to redistribute horizontal forces between resisting members, columns and bracings.