Fire Service Ventilation (7th Edition)-All Chapter Numbers

2x6 inches or larger . and are spaced at . 16 to 24 inch . on center. In hip roof construction, hip rafters run at a . 45 degree . angle from the ridge beam, down and beyond the walls at the corners. In bridge truss roofs, when constructed of wood, trusses are usually made from . 2x12 inch . lumber. Joists are usually . 2x6 or 2x8 inch . and ... ................
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