SITE WORK - ARE Forum

Wood is the hard fibrous substance lying beneath the bark of trees. Lumber is wood that has been sawn into construction members. Timber is lumber that is 5in. or larger in its least dimension. Classification. Softwood. Pine, fir and spruce. (evergreen). Used structurally for framing, sheathing, bracing, etc. Hardwood. Maple, oak and sycamore. ................
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