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BS EN 14734:2022 – TC:2023 Edition

BS EN 14734:2022 – TC:2023 Edition

$134.27

Tracked Changes. Durability of wood and wood-based products. Determination of treatability of timber species to be impregnated with wood preservatives. Laboratory method

Published By Publication Date Number of Pages
BSI 2023 48
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This document specifies a laboratory method for the determination of the treatability of wood in order to determine the likely reaction of different wood species to impregnation with wood preservatives. It is also applicable to investigate variation between samples of the same species but of different origin.

PDF Catalog

PDF Pages PDF Title
1 30470840
29 A-30421075
30 undefined
33 European foreword
34 Introduction
35 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
5.1 Copper sulfate pentahydrate, at least 98 % pure, solution of 50 g/kg
5.2 Indicator solution
5.3 Sealing compound
36 6 Apparatus
Figure 1 — Typical treatment vessel (with connected pumps and storage tank)
37 7 Preparation of test specimens
8 Procedure
8.1 Moisture content and density determination
8.2 Impregnation of test specimens (standard procedure)
38 8.3 Measurement of penetration
Figure 2 — Cutting of the samples
39 Figure 3 — Measuring points of lateral penetration on cross-section
Figure 4 — Assessment of axial penetration on longitudinal plane
9 Data handling
9.1 Treatability classes for individual test samples
40 Table 1 — Treatability classes
9.2 Differentiation between treatability classes 3 and 4
9.3 Assignation of a treatability class to a set of specimens
41 10 Test report
42 Annex A (informative) Guidance on sampling
A.1 General
A.2 Origin of the material
A.3 Homogeneity of the sample
A.4 Heartwood
43 A.5 Saw pattern
A.6 Seasoning
A.7 Grading
44 Annex B (informative) Example of a test report
45 Table B.1 — Detailed results
Table B.2 — Frequency of the test specimens in each treatability class
46 Bibliography

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BS EN 14734:2022 - TC
$134.27