초록 ▼

A roof is provided for a building wherein inverted channels are secured along the tops of side walls of the building, these channels having upright projections at spaced intervals thereon. Rafters of an inverted channel section each has its outer end portion set astraddle one of these projections an

A roof is provided for a building wherein inverted channels are secured along the tops of side walls of the building, these channels having upright projections at spaced intervals thereon. Rafters of an inverted channel section each has its outer end portion set astraddle one of these projections and is pivotally secured thereto. The confronting inner ends of each two rafters extending from opposite walls are joined together at the peak of the roof. Similar rafters are secured to each slope of the end wall of the building. Prefabricated roof panels with an understructure having transverse inverted channels on the under face thereof are lowered onto the rafters with their inverted channels nesting over the rafters and these channels are then bolted to the rafters. Tie rods are arranged to relieve lateral stresses that would otherwise tend to urge the building side walls outwardly away from each other.

대표청구항 ▼

In a building having spaced opposed side walls, the invention comprising: a. cap members in the form of inverted channels set astraddle and extending along the top edge of each side wall, b. said cap members having upstanding projections fixed thereto with the projections on one side wall being tran

In a building having spaced opposed side walls, the invention comprising: a. cap members in the form of inverted channels set astraddle and extending along the top edge of each side wall, b. said cap members having upstanding projections fixed thereto with the projections on one side wall being transversely aligned with those on the other side wall, c. several spaced primary rafter assemblies each separate from the others from one end to the other in the form of inverted channels spanning the space between the two side walls with their opposite ends fitted over each two transversely-aligned projections and secured on said projections and defining the roof contour and slope, d. roof panels extending transversely of the primary rafters carried by said plurality of rafter assemblies having secondary rafter elements thereon extending thereacross, theSe secondary rafter elements comprising inverted channels that fit over the primary rafter assemblies and in so doing connect the several rafter assemblies in fixed parallel relation, the said panel having a deck to the underside of which the secondary rafters are secured, e. means below the deck securing the secondary rafters to the primary ones, and f. means securing the inverted channel form cap members to the side walls of the building.