| 摘要 |
Disclosed is a roof assembly for a modular building unit that comprises a roofing sheet that is welded to the frame of the modular building unit to form a unitary, continuous sealed weld between the roofing sheet and the generally horizontal structural frame of the modular building unit, and that is pitched to downwardly direct water toward one end of the modular building unit. The welded roof assembly prevents water infiltration into the modular building unit, and such watertight structure may then receive any gutter configuration the user wishes to implement without risking water infiltration into the building unit. The welded roofing sheet avoids the use of screws or other fasteners, and the associated possibility of water leakage around the screws and into the building unit. The welded roof also is able to employ a single slope all of the way through the full span of the roof, thus avoiding the need for a centrally pitched roof assembly, and its unitary construction avoids the tiling effect that results from the use of multiple, overlapping roofing sheets. The welded roof also avoids the need for silicon or other filler agents between the unitary roofing sheet and the frame of the modular building unit. |
| 主权项 |
1. A roof assembly for a modular building unit, comprising:
a first long rail having a top wall, an exterior wall, and an interior wall; a second long rail parallel to said first long rail and having a top wall, an exterior wall, and an interior wall; a first short rail extending between said first and second long rails and having a top wall, an exterior wall, and an interior wall; a second short rail extending between said first and second long rails and having a top wall and an exterior wall, wherein said first and second long rails and said first and second short rails are joined to form a rectangular exterior roof frame of a modular building unit; and a roofing sheet; wherein said roofing sheet is joined to said first short rail at a first elevation below said top wall of said first short rail, said roofing sheet is joined to each of said first and second long rails at a point below said top wall of each of said first and second long rails and extending in a downward slope from said first elevation, and said roofing sheet is joined to said top surface of said second short rail at a lowest elevation of said roofing sheet; and wherein said roofing sheet is joined to said first short rail, each of said first and second long rails, and said top surface of said second short rail by a continuous weld. |
