Plumb Cut: The outward-facing vertical cut of a rafter designed to ram against the ridge board. It is often used to prevent separation of the rafters during high winds but can also be used simply to frame the ceiling. Ridge Beam: So-called because it is the horizontal beam that supports the ends of the rafters at the ridge.Ĭollar Tie: A horizontal beam that connects two rafters near the ridge of a roof. Strut: A diagonal member of the truss that has a compressive force acting on it and used to maintain rigidity and add strength to the structure.
These are used in large buildings like the traditional large old barns in the US. Underpurlin: Horizontal beams supported by posts and used to support the mid-span of rafters to cover longer spans.
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Rafter: One of a series of diagonal members of the truss that meet at the apex in order to support the roof deck and its loads. Related: Types of Roof Shingles | DIY Roof Repair Options | Hip Roof Styles | Types of Roof Vents 1. See our detailed diagram showing the parts of a roof here. This article and series of illustrated diagrams shows you all the parts of a basic roof truss, king truss and queen truss. There are many types of roof trusses (as wall as many types of roofs)… more types than there are parts. The roof truss structure and design is integral to roof structural integrity and shape. Incredible series of roof truss illustrated diagrams showing the many different parts of a roof truss including king and queen trusses.
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