Träkonstruktioner

Ämnesområden: Träkonstruktioner
Kommittébeteckning: SIS/TK 182 (Trä)
Källa: ISO
Svarsdatum: den 22 nov 2018
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This Standard specifies methods of evaluating the effectiveness of glued laminated timber face and edge bonds within a manufacturing plant by cleaving of the glue line in both dry and wet conditions. It is not intended that it be used for initial type testing where cyclic delamination or block shear is preferred. It is based on the principle that, provided minimum wood failure percentages are met, then the bond strength exceeds the perpendicular to the grain tension strength of the under-lying substrate and therefore the bond is not the weak element limiting the integrity of a glulam assembly.
Ämnesområden: Träkonstruktioner
Kommittébeteckning: SIS/TK 182 (Trä)
Källa: CEN
Svarsdatum: den 26 nov 2018
Se merSe mindre
 

This International Standard specifies a method based on density, for the selection of pieces of timber used in determining the strength and stiffness properties of joints between members of structural timber made with mechanical fasteners. It is intended to be used in conjunction with a test standard specifying a test method.

It is assumed the timber density is normally distributed and that any deviations are reported.

This International Standard is applicable only to specimens of structural timber.

NOTE It is emphasized that the timber density is only one of the properties that may influence the strength of a joint. Other relevant properties are, for example, growth-ring size and orientation, toughness and hardness.