BS EN 1309-3:2018
$167.15
Round and sawn timber. Methods of measurements – Features and biological degradations
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 34 |
This European Standard specifies the methodology for measurement of features – in relation to wood structure, biological agencies and other damage – taken into account in the visual grading: a) for appearance – of sawn, processed and round timber; b) for serviceability – of sawn and processed timber (identified in EN 1611-1 as the integrity of the timber). When the standard is applied the methodology of measurement used shall be stated. It is not applicable to structural timber for which strength grading in accordance with EN 14081-1 is required. This standard applies to hardwood and softwood sawn timber, both square edged and un-edged, to processed timber and to round timber. It does not apply to tropical timber.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | European foreword |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols 5 Sawn and processed timber 5.1 Knots 5.1.1 General |
| 8 | 5.1.2 Appearance assessment methodology |
| 12 | 5.2 Resin pocket 5.3 Reaction wood 5.4 Grain 5.4.1 Slope of grain |
| 13 | 5.4.2 Spiral, interlocked grain |
| 14 | 5.4.3 Curly grain 5.5 Rate of growth |
| 15 | 5.6 Bark pocket 5.7 Sapwood 5.8 Wane |
| 16 | 5.9 Fissure 5.9.1 Face, edge and end shakes, splits 5.9.2 Ring and heart shakes 5.9.3 Checks |
| 17 | 5.10 Warp 5.10.1 Bow and spring 5.10.2 Cup |
| 18 | 5.10.3 Twist 6 Round timber 6.1 Features of the form of the log 6.1.1 Sweep |
| 19 | 6.1.2 Taper 6.1.3 Ovality |
| 20 | 6.1.4 Rate of growth 6.2 Features of the structure of the wood 6.2.1 Eccentric pith. |
| 21 | 6.2.2 Burl 6.2.3 Buckles 6.2.4 Spiral grain |
| 22 | 6.2.5 Compression wood (reaction wood in softwood) 6.2.6 Double pith 6.3 Sapwood |
| 23 | 6.4 Included sapwood 6.5 False heartwood 6.6 Knots 6.6.1 Uncovered knot |
| 24 | 6.6.2 Covered knot 6.6.3 Epicormic shoot 6.6.4 Rose 6.7 Cracks 6.7.1 Heart shake 6.7.2 Star shake 6.7.3 Ring shake |
| 25 | 6.7.4 Check, traversing crack 6.7.5 Frost crack, lightning shake 6.7.6 Felling shake 6.8 Biological degradation 6.8.1 Attack by insects |
| 26 | 6.8.2 Fungal attack 6.8.3 Hollow 6.8.4 Other attack 6.9 Other defects 6.9.1 Dry side 6.9.2 Parasitic plant |
| 27 | 6.9.3 Carbonized wood 6.9.4 Canker 6.9.5 Bird peck 6.10 Tapping cut 6.11 Foreign bodies 6.12 Resin pocket |
| 28 | 6.13 Other damage 7 Biological degrade 7.1 Sawn timber 7.1.1 Degrade by insects 7.1.2 Fungal degrade 7.2 Round timber 7.2.1 Degrade by insects |
| 29 | 7.2.2 Fungal degrade 7.2.3 Hollow 7.2.4 Other degrade |
| 30 | Annex A (normative) Alternative methodology for measurement of knots for assessment of serviceability |
