BS EN 14081-4:2009 pdf download

BS EN 14081-4:2009 pdf download.Timber structures—Strength graded structural timber with rect angular cross section Part 4: Machine grading—Grading machine settings for machine controlled systems.

BS EN 14081-4 gives settings, derived according to the requirements given In EN 14081.2, for venous combinations of strength classes or grades. grading machines and species from particular sources of grow1h These settings are only applicable to timber from the sources indicated in the tables,
2 Normative references
The following referenced docunients are indispensable for the application of this document. For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (Including any amendments) applies.
EN 336, Structural timber - Sizes, permitted deviations
EN 14081-1:2005, Timber structures - Strength graded structural timber with rectangular cross section - Part 1: General requirements
EN 14081-2:2005, Timber structures. Strength graded structural timber with rectangular cross section. Pert 2: Machine Grading; additional requu’ements for Withal t’pe testing
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 14081-1:2005, EN 14081- 2:2005 and the following apply.
3.1 Speed range
maximum and minimum throughput speeds appropriate to the critical speed for the denved settings (see 6.2.2 of EN 14081-2:2005).