Construction Sawn Timber

Timber refers to timber structure building civil materials, usually hardwood and softwood.

Wood from the main part of the trunk of the tree used in the project. Wood has been a major building material since ancient times because of its ease of acquisition and processing. Classified by the species of wood, generally divided into softwood and hardwood wood.

Structure of wood: under macroscopic conditions, wood is composed of bark, xylem and pith core. 1. Any of the tissues that enclose the secondary xylem of dried wood, branches, and roots;

Cambium: Lying between the bark and xylem structures, the lumber diameter becomes coarser due to the meristem function of the cambium. Secondary lignin: located between the cambium and the heart of the pith, from the cambium growth; Pith: usually in the middle of the trunk, surrounded by xylem. Young tree growth provides nutrients. Short life cycle.

Timber-related terms:

1. Density: the density of Rizhao construction wood wholesale manufacturers can be obtained according to the drying of Chinese wood to the standard water content. It also has density and is related to hardness, strength and application difficulty. (wood moisture content of 60%, dry after use, the north of the general moisture content of 12%, about 15% in the south) master generally take surface measurement of moisture content, line error 2%.

2. Patterns: color patterns, rings, textures, scars, stains and other sharp stripes on the surface details of natural wood.

3. Texture: Texture is used to describe the direction of the wood fibers in the tree. Straight wood textures, cross textures, spiral textures, wave analysis textures, and some Chinese wood will form an irregular texture.

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