Characterization
1. Sawn or Solid Wood: The resistant class system is normalized in the UNE EN 338. Structural Wood. Resistant Classes, in nine resistant classes for coniferous and poplar species [in a range C14 to C40], and six resistant classes for broadleaved species [in a range from D30 to D70]. The usual resistant classes were marketed in C18 [Pinus Sylvestris, Pinus Nigra, Abies Alba], C24 [Pinus Radiata, Picea Abies] and D40 [Eucalyptus Globulus Globulus]. in the normal JOINS IN 1912. Sawn Wood. Resistant Classes. Assignment of Visual Qualities and Species, resistant class is established according to origin for sawn wood species within the national framework.
2.Glued Laminated Wood: The resistant class system is normalized in the UNE EN 1194. Wooden Structures. Glued Laminated Wood. Resistant Classes and Determination of Characteristic Values, in four strength classes for homogeneous glued laminated timber [ranging from GL24h to GL36h], and four strength classes for blended glued laminated timber [ranging GL24c to GL36c]. The common species in glued laminated wood are: Pinus Sylvestris, Albies Alba and Picea Abies, in conifers and Eucalyptus Globulus Globulus in hardwoods. The correspondence between resistant classes of glued laminated wood and resistant classes of sawn wood shows a greater gain in resistance in the lamination process of sawn wood the lower the resistant class of the latter.
3.Microlaminated Wood: The common structural categorization corresponds to the KERTO-S trademark.
