Tech notes Webtech note 12

Technical note

Bearing perpendicular to the grain 
and NZS AS 1720.1:2022

See the description of the technical note below.

Developed in collaboration 
with the Timber Design Society.

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Timber is an anisotropic material, and accordingly, its mechanical and physical properties are direction-dependent. This means its ability to resist loads and deformations parallel to the grain differs from that perpendicular to the grain. In many design situations, timber members are subject to bearing loads being applied perpendicular to the grain. This technical note describes what is bearing perpendicular to the grain, how it was derived in NZS AS 1720.1:2022, how it relates to similar European verifications and how the value should be used in design.