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Chapter 3

Wood

Introdução à madeira
Introdução à madeira
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 ...
Madeiras macias e folhosas
Madeiras macias e folhosas
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 ...
Madeira serrada
Madeira serrada
Long, rectangular pieces of wood used in construction are called lumber. Logs harvested from trees are debarked and repeatedly fed through an automated ...
Propriedades estruturais e dimensões da madeira serrada
Propriedades estruturais e dimensões da madeira serrada
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 ...
Tempero de Madeira
Tempero de Madeira
Consider an unseasoned lumber used for flooring—the lumber contracts when the moisture evaporates, creating gaps at the joints of the floor. Wood ...
Superfície de madeira
Superfície de madeira
Wood surfacing is done to achieve a smoother finish, ensure more accurate dimensions, and make handling safer. Dimensions of wood are marginally increased ...
Defeitos de madeira
Defeitos de madeira
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 ...
Fixadores de madeira
Fixadores de madeira
In wood structures, fasteners hold components in place. Connection strength mainly depends on direct member bearing. Different fasteners, like nails, are ...
Folheado
Folheado
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 ...
Produtos de madeira
Produtos de madeira
Wood products are formed by bonding wood strands, veneers, lumber, and waste materials like wood shreds for structural and nonstructural applications. ...
Produtos de painel de madeira
Produtos de painel de madeira
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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