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Romanian Lumber and Timber Agency
Lumber and Timber Deformations

 
1. Simple bow Deformation of the timber piece in the sense of its lenght on a perpendicullary plane on its faces.
Simple Bow
2. Spring Deformation of the timber piece in the sense of its lenght on a plane parallel with its faces.
Spring
3. Cup Deformation of the timber piece in the sense of its width.
Cup
4. Twist Helicoidal deformation of a timber piece on its length.
Twist
 

All terms without *)  are according
to ISO 1029-1974, ISO 1031-1974, ISO 2299-1973 and ISO 2300-1973.

 
defects classification
knots | cracks | structural irregularities | fungi defects | insect defects | sawing defects

 
Ec. Septimiu Petrascu, Export-Import Agent, 11, Traian Str., 2575 Sebes-Alba, Romania
Tel/Fax : 0040-58-730.786  e-Mail : septimiu@apulum.ro