San Gioacchino ai Prati di Castello: notes of restoration
The intervention involved the repair of both the aluminum plates protecting the outer shell of the dome
and the galalith stars, the latter with the use of polycarbonate plates placed in correspondence with the hole
covered by the star, fixed to the aluminum plate cladding of the dome with threaded rivets in brass and
silicone resin placed between the slab and the aluminum coating, limiting the use to the parts not exposed to
radiation. The polycarbonate sheets were housed with an edge overlap in the upper part; the polycarbonate sheet, covering half of the hole, was mounted above the cladding. A surface was created to cover the holes on
which the whole star was reassembled with its steel frame, taking care to raise the steel frame with respect to
the support surface, by means of a 1 cm thick spacer, in order to avoid any kind of constraint.
