BS EN 942 focuses on timber in joinery. The aim of the BS EN 942 is to provide manufacturers with requirements for the evaluation of their products that helps in grading timber for joinery.
BS EN 942 specifies the general requirements including in particular the grading and
classification by appearance quality of timber in joinery products or individual joinery parts. BS EN 942 is intended to be used at the time of manufacture of a product. However BS EN 942 may be used to evaluate products at a later stage, but in these situations storage and service conditions, subsequent to manufacture, shall be taken into account (surface checks).BS EN 942 covers solid, finger-jointed, end-jointed, edge-jointed and laminated timber products.
Note: Matters relating to the influence of timber characteristics on strength and durability are not covered in BS EN 942.
BS EN 942 on timber is useful for:
Timber joinery is a traditional post and beam wood construction technique used to connect wood members without the use of metal fasteners. The selection of timber species for a particular item of joinery requires considering several criteria such as aesthetic, commercial, mechanical, durability, serviceability and workability criteria.
BS EN 942 provides the classification of timber based on spiral grain, slope of grain, loose or unsound knots, knots, resin pockets, bark pockets, fissures, shakes. BS EN 942 helps the user in choosing the appropriate timber based on the quality.
BS EN 942 specifies the general grading requirements. This helps to determine the characteristics and classify, by appearance, the quality of timber in joinery.
EN 942:2007