BS EN 350 pdf free download
BS EN 350 2016 pdf free download.Durability of wood and wood- based products — Testing and classification of the durability to biological agents of wood and wood-based materials.
This European Standard gives guidance on methods for determining and classifying the durability of wood and wood-based materials against biological wood-destroying agents. The methods can be applied either to individual wood species, batches of wood and processed wood- based materials, including heat-treated, preservative-treated wood and modified wood. However, this standard is not intended to replace testing of the efficacy of biocides. The wood-destroying agents considered in this standard are: — wood-decay fungi (basidiomycete and soft-rot fungi); — beetles capable of attacking dry wood; — termites; — marine organisms capable of attacking wood in service. Data on the biological durability of selected wood species considered of economic importance in European countries are presented in Annex B (informative), which also provides information relating to their geographical origin, density, sapwood width and treatability. NOTE Treatability, durability to disfiguring fungi, permeability to water and performance in use of wood and wood-based materials are also important issues. However, because standardized methods aiming to assess and classify these factors do not exist and/or have not been extensively experienced yet, preliminary guidance is given in Annex C (informative) for the classification of wood treatability with aqueous wood preservatives, Annex D (informative) for the classification of the permeability to water, Annex E (informative) for the durability to disfiguring fungi, and Annex F (informative) for the classification of performance.
2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 20-1, Wood preservatives – Determination of the protective effectiveness against Lyctus Brunneus (Stephens) – Part 1: Application by surface treatment (laboratory method) EN 46−1, Wood preservatives – Determination of the preventive action against recently hatched larvae of Hylotrupes bajulus (Linnaeus) – Part 1: Application by surface treatment (laboratory method) EN 49-1, Wood preservatives – Determination of the protective effectiveness against Anobium punctatum (De Geer) by egg-laying and larval survival – Part 1: Application by surface treatment (Laboratory method) EN 117, Wood preservatives – Determination of toxic values against Reticulitermes species (European termites) (Laboratory method) EN 252, Field test method for determining the relative protective effectiveness of a wood preservative in ground contact EN 275, Wood preservatives – Determination of the protective effectiveness against marine borers ENV 12038, Durability of wood and wood-based products – Wood-based panels – Method of test for determining the resistance against wood-destroying basidiomycetes EN 13556, Round and sawn timber – Nomenclature of timbers used in Europe CEN/TS 15083-1, Durability of wood and wood-based products – Determination of the natural durability of solid wood against wood-destroying fungi, test methods – Part 1: Basidiomycetes CEN/TS 15083-2, Durability of wood and wood-based products – Determination of the natural durability of solid wood against wood-destroying fungi, test methods – Part 2: Soft rotting micro-fungi EN 16449, Wood and wood-based products – Calculation of the biogenic carbon content of wood and conversion to carbon dioxide ISO 13061-2, Physical and mechanical properties of wood — Test methods for small clear wood specimens — Part 2: Determination of density for physical and mechanical tests 3 Terms and definitions For the purposes of this document, the following terms and definitions apply.BS EN 350 pdf download.
