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Uued standardid


EVS-EN 384:2016+A1:2018
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Identne EN 384:2016+A1:2018
Structural timber - Determination of characteristic values of mechanical properties and density
This European Standard gives a method for determining characteristic values of mechanical properties and density, for defined populations of visual grades and/or strength classes of machine graded structural timber. Additionally it covers the stages of sampling, testing, analysis and presentation of the data. The standard provides methods to derive strength, stiffness and density properties for structural timber from tests with defect-free specimen. The values determined in accordance with this standard for mechanical properties and density are suitable for assigning grades and species to the strength classes of EN 338. NOTE 1 For assigning grades and species to the strength classes in EN 338 only three properties, i.e. bending or tension strength, modulus of elasticity parallel to grain in bending or tension and density need to be determined from test data, other properties can be calculated according to Table 2. NOTE 2 EN 1912 gives examples of established visual grades assigned to strength classes.
Asendab EVS-EN 384:2016

Asendatud või tühistatud standardid


EVS-EN 384:2016
Identne EN 384:2016
Structural timber - Determination of characteristic values of mechanical properties and density
This standard gives a method for determining characteristic values of mechanical properties and density, for defined populations of visual grades and/or mechanical strength classes of sawn timber. Additionally it covers the stages of sampling, testing, analysis and presentation of the data. A method is also given for checking the strength of a timber population against its designated value. The values determined in accordance with this standard for mechanical properties and density are suitable for assigning grades and species to the strength classes of EN 338. NOTE 1 For assigning grades and species to the strength classes in EN 338 only three characteristic values, i.e. bending or tension strength, mean modulus of elasticity parallel to grain in bending or tension and density need to be determined, other properties can be calculated according to Tab. 6.2. NOTE 2 EN 1912 gives examples of established visual grades assigned to strength classes.
Keel: Inglise

Kavandite arvamusküsitlus


prEN 460
Identne prEN 460
Tähtaeg 3.02.2019
Durability of wood and wood-based products - Natural durability of solid wood - Guide to the durability requirements for wood to be used in hazard classes
This document gives guidance on the selection of wood species based on their biological durability and selection of wood materials based on their specific enhanced resistance (wood preservative treatment, wood modification and other non-biocidal methods) to attack by wood-destroying organisms for use as solid wood, as engineered wood products (e.g. glulam) and as wood based composites (e.g. plywood, wood polymer composites) in the use classes defined in EN 335. This standard does not consider: i) the durability characteristics of the glue used in engineered wood products or wood-based composites; ii) the aesthetic function of wood products (discoloration, surface weathering, mould); iii) the strategy for protection of products as it will be different based on priorities of the user and client and the type of product e.g. glulam compared to plywood.
Keel: Inglise