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BS EN 14592:2022

$215.11

Timber structures. Dowel-type fasteners. Requirements

Published By Publication Date Number of Pages
BSI 2022 84
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This document specifies the characteristics of the following types of dowel-type fasteners: – nails; – staples; – screws; – dowels; – bolts with nuts. This document covers dowel-type fasteners for structural use in load bearing timber structures only. This document covers also the following additional intended uses of the screws: – to fix roof or cladding elements to the timber structure, with or without insulation layers; and – as reinforcement inserted in timber or in a glue laminated timber element to improve its resistance to compression perpendicular to the grain. This document covers types of dowel-type fasteners, which are manufactured of either carbon steel or stainless steel and which may be coated for the following purposes: – corrosion protection (as Type 1 coating); – lubrication, to facilitate insertion (as Type 2 coating); – withdrawal enhancement and/or collation for nails and staples (adhesive and/or resin coatings) (as Type 3 coating). This document covers types of dowel-type fasteners, which are manufactured from materials and within the specifications for their geometry related properties, only as they are specified for: – nails (see G.1); – staples (see G.2); – screws (see G.3); – dowels (see G.4); and – bolts with nuts (see G.5). This document specifies also the assessment and verification of constancy of performance (AVCP) procedures of these characteristics and includes provisions for marking of dowel-type fasteners. This document does not cover dowel-type fasteners treated with fire retardants to improve their fire performance, nor does it cover glued-in rods.

PDF Catalog

PDF Pages PDF Title
2 undefined
6 1 Scope
7 2 Normative references
10 3 Terms, definitions, symbols, units and abbreviated terms
3.1 Terms and definitions
12 3.2 Symbols, units and abbreviated terms
13 4 General product characteristics – Testing, assessment and sampling method
4.1 Corrosion resistance
4.1.1 General
4.1.2 Pure zinc coating and hot-dipped galvanized coating
4.1.2.1 Determination
4.1.2.2 Evaluation
4.1.2.3 Expression
14 4.1.3 Stainless steel
4.1.3.1 Determination
4.1.3.2 Evaluation
4.1.3.3 Expression
15 4.1.4 Alternative coatings
4.1.4.1 Determination
16 4.1.4.2 Evaluation
4.1.4.3 Expression
17 4.2 Low cycle ductility (seismic performance)
4.3 Reaction to fire
4.3.1 General
4.3.2 Classification without testing (WT)
18 4.3.3 Classification according to the test results
5 Product specific characteristics – Testing, assessment and sampling method
5.1 Nails
5.1.1 Mechanical strength and stiffness
5.1.1.1 General
19 5.1.1.2 Characteristic yield moment
5.1.1.3 Characteristic withdrawal parameter
20 5.1.1.4 Characteristic head pull-through parameter
5.1.1.5 Characteristic tensile capacity
21 5.1.1.6 Low cycle ductility (seismic performance)
5.2 Staples
5.2.1 Mechanical strength and stiffness
5.2.1.1 General
22 5.2.1.2 Characteristic yield moment
5.2.1.3 Characteristic withdrawal parameter
23 5.2.1.4 Characteristic head pull-through parameter
5.2.1.5 Low cycle ductility (seismic performance)
5.3 Screws
5.3.1 Mechanical strength and stiffness
5.3.1.1 General
24 5.3.1.2 Characteristic yield moment
25 5.3.1.3 Static ductility
5.3.1.4 Characteristic withdrawal parameter
5.3.1.5 Characteristic head pull-through parameter
26 5.3.1.6 Characteristic tensile capacity
5.3.1.7 Characteristic tensile yield stress
27 5.3.1.8 Torsional ratio
5.3.1.9 Low cycle ductility (seismic performance)
5.3.1.10 Axial stiffness
28 5.4 Dowels
5.4.1 Mechanical strength and stiffness
5.4.1.1 General
5.4.1.2 Characteristic yield moment
29 5.4.1.3 Low cycle ductility (seismic performance)
5.5 Bolts and nuts
5.5.1 Mechanical strength and stiffness
5.5.1.1 General
30 5.5.1.2 Characteristic yield moment
5.5.1.3 Low cycle ductility (seismic performance)
31 6 Assessment and verification of constancy of performance – AVCP
6.1 General
6.2 Assessment of performance
6.2.1 General
32 6.2.2 Test samples, testing and conformity criteria
38 6.2.3 Test reports
39 6.3 Verification of constancy of performance
6.3.1 Factory production control (FPC)
6.3.1.1 General
40 6.3.1.2 Equipment
6.3.1.3 Raw materials and components
6.3.1.4 Controls during the production process
6.3.1.5 Procedures
48 6.3.1.6 Non-complying products
6.3.1.7 Corrective action
6.3.1.8 Handling, storage and packaging
6.3.1.9 Product specific provisions
49 6.3.1.10 Procedure for modifications
6.3.1.11 One-off products, pre-production products (e.g. prototypes) and products produced in very low quantity
50 Annex A (normative)Test methods for alternative coatings
A.1 Introduction
A.2 Outdoor exposure test with two years of duration
A.2.1 Test method
A.2.2 Evaluation
A.3 Outdoor exposure test with four years of duration
A.3.1 Test method
A.3.2 Evaluation
51 A.4 Accelerated test methods
A.4.1 Inorganic coatings with or without an organic top coat
A.4.1.1 General
A.4.1.2 Samples
A.4.1.3 Reference test panels
A.4.1.4 Test method
52 A.4.1.5 Determination of corrosion class
53 A.4.2 Organic coatings with or without an organic topcoat
A.4.2.1 General
A.4.2.2 Samples
A.4.2.3 Test method
A.4.2.4 Evaluation
54 Annex B (informative)Corrosivity of atmospheric environments and timber
B.1 General
55 B.2 Pure zinc, hot-dipped galvanized and alternative coated dowel-type fasteners: corrosivity of atmospheric environments
56 B.3 Stainless steel dowel-type fasteners: corrosivity of atmospheric environments
57 B.4 Corrosivity of timber
58 Annex C (normative)Methods for measuring zinc thicknesses
59 Annex D (normative)Selection of test specimens – Specifications on wood density
D.1 General
D.2 Symbols
D.3 Specifications
60 D.4 Adjustment to target conditions
D.4.1 Mean value
61 D.4.2 Coefficient of variation
D.5 Test report
62 Annex E (normative)Test to determine seismic performance
E.1 General
E.2 Test setup
64 E.3 Test procedure
65 E.4 Test results
66 E.5 Test report
67 Annex F (normative)Characteristic withdrawal parameter for dowel-type fasteners withType 3 coating
F.1 General
F.2 Sample preparation
68 F.3 Determination
F.3.1 Test procedure
F.3.2 Correction of the measured withdrawal parameter
F.3.3 Calculation of the characteristic withdrawal parameter
F.4 Load duration factor
69 Annex G (normative)Specifications for materials and geometry properties
G.1 Nails
72 G.2 Staples
74 G.3 Screws
76 G.4 Dowels
78 G.5 Bolts and nuts
BS EN 14592:2022
$215.11