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0438 Roof Truss Uplift - Roof Framing - Trusses
0438 Roof Truss Uplift - Roof Framing - Trusses -

Image Text: Cross section > roof truss > insulation > expansion - colder, "wetter" wood > shrinkage - warmer, "drier" wood > truss lifts upwards in middle > insulation omitted for clarity > cracks form at central wall/ceiling intersections

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STRUCTURE, Footings and Foundations, Description, Problems, Floors, Sills, Columns, Beams, Joists, Subflooring, Concrete Floor Slabs, Walls, Solid Masonry Walls, Wood Frame Walls, Masonry Veneer Walls, Arches and Lintels, Roof Framing, Rafters, Roof Joists and Ceiling Joists, Collar Ties, Knee Walls and Purlins, Trusses, Wood I Joists, Sheathing