What are the classification of timber for construction?
uilding timber is divided into: logs, square materials, sheet, glue material. Good understanding of logs. Square wood is machined into rectangular or square, and the aspect ratio is less than 3. Thickness ratio greater than or equal to 3 for the plate. Plywood is a man-made material, is the use of various materials using the corresponding production process manufacturing. Logs, square wood is mainly used for columns, beams, roof trusses and so on. Plate, plastic material used for wall, ceiling and other decorative parts.
Fir: Metasequoia glyptostroboides, fir, spruce, hemlock
Pine: northeast pine, yellow flowers pine, larch, Pinus massoniana, China pine, pine, red pine
Willow: Ash, Willow
Elm: elm
Birch: birch, redwood
Yang: Maple Leaves, Poplar
Oak: oak, green grass
and many more.