Shell structures, e.g. of hyperbolic-parabolic shape; Grid-like formations acting as shell structures; Folded structures

Roofs; Roof construction with regard to insulation > Vaulted roofs > Shell structures, e.g. of hyperbolic-parabolic shape; Grid-like formations acting as shell structures; Folded structures

Roofs; Roof construction with regard to insulation (structures for roofs as well as for floors E04B5/00; ceilings E04B9/00; greenhouses A01G9/14; large containers having floating covers B65D88/34; roof trusses, truss-like structures, joists E04C3/02; roof coverings E04D) > Vaulted roofs (E04B7/14 takes precedence; vaulted structures in general E04B1/32; inflatable tents or canopies, in general E04H15/20; inflatable forms for shaping in situ E04G11/04) > Shell structures, e.g. of hyperbolic-parabolic shape; Grid-like formations acting as shell structures; Folded structures