BS EN 113-2:2020 pdf free

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BS EN 113-2:2020 pdf free.Durability of wood and wood-based products一Test method against wood destroying basidiomycetes.Assessment of inherent or enhanced durability.
BS EN 113-2 This document specifies a method of test for determining the natural durability of a timber against wood-destroying basidiomycetes cultured on a malt extract agar medium. The method is applicable to all timber species.Furthermore this method can be used to test modified wood. The test method described in this document can be applied to specific wood species, commercial supplies of sawn timber, wood-based materials,wood treated with preservatives and modifed wood, both thermally and chemically modified wood.However, this document is not intended to determine the effectiveness of wood preservatives used to prevent decay.NOTE 1 Determining the efficacy of wood preservatives used to prevent decay is the scope of EN 113- 1. However,in addition to this and with some amendments, it might also be possible in some cases to test treated wood using the method described here.NOTE 2
This method can be used in conjunction with an ageing procedure, for example EN 73 or EN 84.Annex A (informative) contains a guidance on sampling.Annex B (normative) contains some methods of sterilization.Annex C (informative) contains information on the culture vessels.Annex D (informative) contains an example of a test report.Annex E (informative) contains information on the test fungi.Annex F (informative) contains the assessment of the results.Test specimens of the timber under test and reference timber test specimens are exposed to attack by pure cultures of basidiomycetes. After a prescribed period of incubation under defined conditions, the percentage loss in dry mass of the test specimens is used to establish the timber durability classification of the timber under test.The wood shall be free from cracks, stain, decay, insect damage or other defects. The wood shall not have been water-stored, floated, chemically treated or steamed.Use at least 10 reference timber virulence control specimens for each test fungus. Mark each reference timber virulence control specimen so that it can be identified throughout the test.BS EN 113-2 pdf downlaod.

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