(57) The structure comprises a supporting box (1), formed by upper and lower walls (5,
6), two end caps (7), a side wall (8) and a cover (9) each of which is formed by:
an association of metallic sections (20), which define two longitudinal edges and
an outer surface (16), the outer surfaces of the sections of one same association
being coplanar; and by an insulating section (14) which is comprised between two metallic
sections (20) of one same association and attached to the longitudinal edges of the
metallic sections (20) between which it is situated; each of said insulating sections
(14) extends between the insulating sections (14) of the adjacent walls (5, 6) or
end caps (7).
|
|
