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Construction for Landscape Architecture by Jamie Liversedge, Robert Holden

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Types of lumber

There are three main types of lumber in construction use:

  • hardwoods: angiosperms—mainly deciduous broadleaved species such as ash, oak, and sycamore, which are temperate species, and mahogany, teak, African walnut, ipé, afrormosia, ebony, and balsa are from the tropics;
  • softwoods: gymnosperms—coniferous and largely evergreen trees with needle leaves, such as pine, fir, spruce, larch, cedar, yew, and the giant redwood;
  • composite woods: reassembled or man-made lumbers—e.g. plywood, glulam, and pressed wood such as MDF (medium-density fiberboard) etc. They may be softwoods or hardwoods and consist of offcuts and sawdust waste from the milling of lumber which are processed to make usable lumber.

For tables of lumber types and their ...

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