Tại sao nó quan trọng đối với vật liệu
Wood dominates low-rise residential construction wherever it grows, because it is strong enough for the spans involved, light enough to be carried by two people and cuttable with hand tools on site. The demand is cyclical and interest-rate sensitive, and sawmill capacity cannot be added inside one cycle - which is the whole explanation for how violently lumber prices move.
Thành phần cấu tạo
Tất cả vật liệu →| Vật liệu | Chức năng của nó tại đây | Tầm quan trọng |
|---|---|---|
| Douglas Fir | Beams and long spans where stiffness governs | Định nghĩa |
| Industrial Roundwood | The logs all of the above are cut from | Định nghĩa |
| Oriented Strand Board | Wall and roof sheathing and subfloor | Định nghĩa |
| Plywood | Structural sheathing, subfloor and formwork | Định nghĩa |
| Softwood Lumber | Framing: studs, joists, rafters and plates | Định nghĩa |
| Southern Yellow Pine | Framing and all treated ground-contact timber | Định nghĩa |
| Spruce-Pine-Fir (SPF) | The northern framing commodity | Định nghĩa |
| Hem-Fir | Framing and millwork | Quan trọng |
| Mass Timber | Floor slabs and frames in mid-rise buildings | Quan trọng |
| Western Red Cedar | Siding, shingles and exterior joinery | Quan trọng |
| Wood-Based Panels | Interior linings, cabinetry and joinery | Quan trọng |
Douglas Fir
Not a true fir. The strongest and stiffest softwood in wide structural use, and the species that built the American…
Industrial Roundwood
Logs. The tree after felling and before anything has been done to it except cutting it to length.
Oriented Strand Board
A structural panel made from long wood strands laid in layers and pressed - the cheaper sheathing that largely…
Plywood
Thin layers of wood peeled from a log and glued in a stack with the grain crossed at right angles.
Softwood Lumber
Sawn boards from coniferous trees - the 2x4s and joists that most of the world's houses are framed with.
Southern Yellow Pine
A fast-grown, dense, strong southern US pine - the workhorse of American framing and the only major species that…