| 摘要 |
A roof truss assembly for hipped roofs comprises a number of roof trusses of constant ceiling joist length and of a height decreasing stepwise from a maximum height. All roof trusses regardless of their height have vertical struts which are perpendicular to the ceiling joist and provided in a number at least twice as large as the number of height reduction steps. The vertical struts are provided in the same number on either side of the transverse central plane of the roof trusses, the vertical struts on one side of the plane being spaced equally far from said plane as corresponding vertical struts on the other side of said plane. This embodiment permits employing a mechanical manufacturing procedure in which the gusset plates utilized at the manufacture to fix the junctions between the rafter and the vertical struts need only be shifted in a direction at right angles to the longitudinal direction of the ceiling joist when passing from one roof truss height to another, while all other gusset plates are retained at the same places.
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