Softwood lumber, harvested from coniferous trees like pine, spruce, and fir, forms the backbone of structural framing with straight grains and knot-free spans up to 24 feet. Kiln drying to 19% moisture prevents warping in 2x4 studs, while finger-jointing bonds short lengths into beams rated for 1000 psi compression. Sustainable forestry certification ensures replanting matches harvest rates....
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