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Chapter 3

Wood

木材の紹介
木材の紹介
Trees, the source of wood, have a trunk enveloped by a shielding layer of dead bark. Under the dead outer bark is living bark. Next is the cambium, then ...
針葉樹と広葉樹
針葉樹と広葉樹
Most cone-bearing trees have needle-like leaves and are classified as softwoods, and most hardwood trees have broad leaves that are shed on a seasonal ...
木材
木材
Long, rectangular pieces of wood used in construction are called lumber. Logs harvested from trees are debarked and repeatedly fed through an automated ...
木材の構造特性と寸法
木材の構造特性と寸法
Wood fibers align along the tree's length, giving it up to twenty times higher tensile strength along the fibers than across them. Wood is also ...
木材の乾燥
木材の乾燥
Consider an unseasoned lumber used for flooring—the lumber contracts when the moisture evaporates, creating gaps at the joints of the floor. Wood ...
木材の表面仕上げ
木材の表面仕上げ
Wood surfacing is done to achieve a smoother finish, ensure more accurate dimensions, and make handling safer. Dimensions of wood are marginally increased ...
木材の欠陥
木材の欠陥
Growth defects in wood include knots, which are formed where branches connect to the tree trunk, knotholes that result from loose knots falling out, decay ...
木材用の留め具
木材用の留め具
In wood structures, fasteners hold components in place. Connection strength mainly depends on direct member bearing. Different fasteners, like nails, are ...
ベニヤ
ベニヤ
Veneer is a thin sheet of wood that is produced with a thickness of roughly one-eighth of an inch or less. Positioning a log into a large lathe and ...
木製品
木製品
Wood products are formed by bonding wood strands, veneers, lumber, and waste materials like wood shreds for structural and nonstructural applications. ...
木製パネル製品
木製パネル製品
Standard wood panels used for flooring, siding, and roofing have dimensions of 4 feet by 8 feet in width and length, and their thickness can range from ...
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