ISO 10984-1:2009

Timber structures — Dowel-type fasteners — Part 1: Determination of yield moment

ISO 10984-1:2009 specifies a laboratory method for determining the yield moment of dowel-type fasteners.

Structures en bois — Éléments de fixation de type cheville — Partie 1: Détermination du moment plastique

General Information

• Status: Published
• Publication Date: 29-Jul-2009
• ICS: 91.080.20 - Timber structures
• Technical Committee: ISO/TC 165 - Timber structures
• Drafting Committee: ISO/TC 165 - Timber structures
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 01-May-2020

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 10984-1
First edition
2009-08-15


Timber structures — Dowel-type
fasteners —
Part 1:
Determination of yield moment
Structures en bois — Éléments de fixation de type cheville —
Partie 1: Détermination du moment plastique





Reference number
ISO 10984-1:2009(E)
©
ISO 2009

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ISO 10984-1:2009(E)
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ii © ISO 2009 – All rights reserved

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ISO 10984-1:2009(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Terms and definitions. 1
3 Symbols . 2
4 Requirements . 2
5 Test method. 2
6 Test report . 7
Annex A (informative) Fastener bending apparatus used for method A. 9
Bibliography . 12

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ISO 10984-1:2009(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 10984-1 was prepared by Technical Committee ISO/TC 165, Timber structures.
ISO 10984 consists of the following parts, under the general title Timber structures — Dowel-type fasteners:
⎯ Part 1: Determination of yield moment
⎯ Part 2: Determination of embedding strength

iv © ISO 2009 – All rights reserved

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ISO 10984-1:2009(E)
Introduction
Dowel-type fasteners are those mechanical fasteners that are most widely used for timber structures. Their
characteristics, such as yield moment, have a great effect on the mechanical performance of joints made with
dowel-type fasteners under loads.
The purpose of this part of ISO 10984 is to define methods to measure the yield moment of a fastener as one
of the basic parameters to interpret the behaviour of joints under loads. The requirements are necessary to
replicate the same conditions as those for timber structures in the field. This part of ISO 10984 contains two
testing methods: method A, based on EN 409, by applying a four-points loading principle, and method B,
based on ASTM F1575, by applying a three-points loading principle. The user can choose whichever method
is relevant for the test to measure the yield moment of fasteners.
ISO 10984-2 provides the test method to obtain other basic information on the behaviour of mechanical joints
under loads.

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INTERNATIONAL STANDARD ISO 10984-1:2009(E)

Timber structures — Dowel-type fasteners —
Part 1:
Determination of yield moment
1 Scope
This part of ISO 10984 specifies a laboratory method for determining the yield moment of dowel-type
fasteners.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
dowel-type fastener
nail, staple, bolt, screw, dowel or the like with plain or patterned surfaces
2.2 Fastener section dimension
2.2.1
fastener section dimension
〈plain round or profiled fastener〉 diameter of the shank without coating
2.2.2
fastener section dimension
〈square fastener〉 length of one side of the section
2.2.3
fastener section dimension
〈oval or rectangular fastener〉 minimum dimension of the section
2.3 Yield moment
2.3.1
yield moment
〈method A〉 the bending moment at the maximum load sustained by a dowel-type fastener under test, or the
bending moment at which the fastener has deformed through an angle of 45°, whichever is the lesser
2.3.2
yield moment
〈method B〉 the bending moment calculated using the load at the intersection of the load and deformation
curve with a line represented by the initial tangent modulus offset by 5 % of the fastener diameter
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ISO 10984-1:2009(E)
3 Symbols
d fastener nominal section dimension as defined in 2.2, expressed in millimetres
F , F maximum support loads on the fastener, expressed in newtons
1 3
F, F , F test loads applied to the fastener, expressed in newtons

2 4
F yield load determined from the load and deformation curve, expressed in newtons; see Figure 6
y
l length of fastener, expressed in millimeters
l ,l distances between loading points and the nearest support, expressed in millimetres; see Figure 1

1 3
l free length of the fastener, expressed in millimetres; see Figure 1
2
l length between supports, expressed in millimetres; see Figure 5
4
l length between the end of fastener and the nearest support, expressed in millimetres; see

5
Figure 5
M yield moment of the fastener, expressed in newton-millimetres
y
α, α , α bending angle, expressed in degrees; see Figure 2
1 2
ρ characteristic density of the timber, expressed in kilograms per cubic metre
k
f tensile strength of the fastener, expressed in newtons per square millimetre
t
4 Requirements
The fasteners shall be, as far as possible, of the quality allowed by the relevant manufacturing specification.
5 Test method
5.1 General
One of the two test methods shall be used: the four-point loading method (method A) or the three-point
loading method (method B). The user may choose one of these two methods, whichever is most relevant.
5.2 Method A
5.2.1 Principle
The principle of the test method involves the loading of the fastener under test as shown in Figure 1 in such a
manner that the loading points do not move along the fastener and the loads remain normal to the axis of the
fastener during the test. The dimensions l and l shall be not less than 2d. The free length of the fastener, l ,
1 3 2
shall be between d and 3d.

2 © ISO 2009 – All rights reserved

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ISO 10984-1:2009(E)

Key
1 fastener head
2 dowel-type fastener
Figure 1 — Fastener loading in method A


Key
1 fastener head
2 dowel-type fastener
Figure 2 — Fastener deformation in m
...