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BS EN 384:2016+A1:2018

$102.76

Structural timber. Determination of characteristic values of mechanical properties and density

Published By Publication Date Number of Pages
BSI 2018 22
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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.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Symbols and abbreviations
10 5 Mechanical properties determined from full-size specimens
5.1 Sampling
5.2 Testing
5.3 Reference conditions
5.3.1 Moisture content
5.3.2 Bending strength
5.3.3 Tension strength
5.3.4 Density
11 5.4 Adjustment factors
5.4.1 General
5.4.2 Moisture content
5.4.3 Timber size and test length
12 5.4.4 Modulus of elasticity
5.4.5 Other adjustments
5.5 Analysis of data
5.5.1 Sub-sample analysis
13 5.5.2 Characteristic values
5.5.2.1 Machine grading
5.5.2.2 Visual grading
15 6 Bending strength and modulus of elasticity determined from small, clear hardwood specimens
7 Other mechanical properties for hardwoods and softwoods
17 8 Report
18 Annex A (normative)Requirements for reports for visual grading assignment
BS EN 384:2016+A1:2018
$102.76