prEN 1992-4

SLOVENSKI STANDARD
01-junij-2026
Evrokod 2 - Projektiranje betonskih konstrukcij - 4. del: Projektiranje pritrjevanja
za uporabo v betonu
Eurocode 2 - Design of concrete structures - Part 4: Design of fastenings for use in
concrete
Eurocode 2 - Bemessung und Konstruktion von Stahlbeton- und Spannbetontragwerken
- Teil 4: Bemessung der Verankerung von Befestigungen in Beton
Eurocode 2 - Calcul des structures en béton - Partie 4 : Conception et calcul des
éléments de fixation pour béton
Ta slovenski standard je istoveten z: prEN 1992-4
ICS:
91.010.30 Tehnični vidiki Technical aspects
91.080.40 Betonske konstrukcije Concrete structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2026
ICS 91.010.30; 91.080.40 Will supersede EN 1992-4:2018
English Version
Eurocode 2 - Design of concrete structures - Part 4: Design
of fastenings for use in concrete
Eurocode 2 - Calcul des structures en béton - Partie 4 : Eurocode 2 - Bemessung und Konstruktion von
Conception et calcul des éléments de fixation pour Stahlbeton- und Spannbetontragwerken - Teil 4:
béton Bemessung der Verankerung von Befestigungen in
Beton
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 250.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1992-4:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
0 Introduction . 6
1 Scope . 8
1.1 General . 8
1.2 Assumptions . 8
2 Normative references . 11
3 Terms, definitions, symbols and abbreviations . 12
3.1 Terms and definitions . 12
3.2 Symbols and abbreviations . 19
3.2.1 Indices . 19
3.2.2 Superscripts . 20
3.2.3 Actions and resistances (listing in alphabetical order) . 20
3.2.4 Concrete and steel . 25
3.2.5 Fasteners and fastenings, reinforcement . 25
3.2.6 Units . 28
4 Basis of design . 28
4.1 General . 28
4.2 Required verifications . 29
4.3 Design format . 29
4.4 Verification by the partial factor method . 30
4.4.1 Partial factors for actions . 30
4.4.2 Partial factors for resistance . 30
4.5 Project specification . 33
4.6 Installation of fasteners . 34
4.7 Determination of concrete condition . 34
5 Durability . 34
6 Derivation of forces acting on fasteners – Analysis . 35
6.1 General . 35
6.2 Headed fasteners and post-installed fasteners . 36
6.2.1 Tension loads . 36
6.2.2 Shear loads . 38
6.3 Anchor channels . 42
6.3.1 General . 42
6.3.2 Tension loads . 43
6.3.3 Shear loads . 44
6.4 Forces assigned to supplementary reinforcement . 45
6.4.1 General . 45
6.4.2 Tension loads . 45
6.4.3 Shear loads . 45
7 Verification of ultimate limit state . 46
7.1 General . 46
7.2 Headed and post-installed fasteners . 47
7.2.1 Tension load . 47
7.2.2 Shear load . 61
7.2.3 Combined tension and shear loads . 72
7.3 Fasteners in statically indeterminate redundant non-structural systems . 73
7.4 Anchor channels . 73
7.4.1 Tension load . 73
7.4.2 Shear load . 82
7.4.3 Combined tension and shear loads . 89
8 Verification of ultimate limit state for fatigue loading . 91
8.1 General . 91
8.2 Derivation of forces acting on fasteners – analysis . 91
8.3 Resistance . 91
8.3.1 Tension load . 91
8.3.2 Shear load . 92
8.3.3 Combined tension and shear load . 93
9 Verification for fire resistance . 94
10 Verification of serviceability limit state . 94
Annex A (normative) Additional rules for verification of concrete elements due to loads
applied by fastenings. 95
A.1 General . 95
A.2 Verification of the shear resistance of the concrete member . 95
Annex B (informative) Durability . 97
B.1 General . 97
B.2 Fasteners in dry, internal conditions . 98
B.3 Fasteners in external atmospheric or in temporary/permanently damp internal
exposure condition . 98
B.4 Fasteners in highly corrosive environments including chloride and sulphur dioxide . 99
Annex C (informative) Exposure to fire – design method . 100
C.1 General . 100
C.2 Partial factors . 100
C.3 Actions . 100
C.4 Resistance . 100
Annex D (normative) Characteristics for the design of fastenings to be provided by
European Technical Products Specification . 111
Annex E (normative) Assumptions for design provisions regarding execution of fastenings . 114
E.1 General . 114
E.2 Post-installed fasteners . 114
E.3 Headed fasteners . 114
E.4 Anchor channels . 115
Annex F (informative) Design of post-installed fasteners – Simplified methods . 116
F.1 General . 116
F.2 Method B . 116
F.3 Method C . 117
Annex G (informative) Methods for checking fixture stiffness . 118
G.1 General . 118
G.2 Limitation of fixture steel stresses . 118
G.3 Verification that fixture is sufficiently stiff . 119
G.4 Fastener stiffness . 122
Annex H (informative) Alternative method for design of supplementary reinforcement . 123
H.1 General . 123
H.2 Design of supplementary reinforcement for tension forces . 123
H.3 Design of supplementary reinforcement for shear forces . 130
H.4 Combined tension and shear loading . 137
Bibliography . 138
European foreword
This document (prEN 1992-4:2026) has been prepared by Technical Committee CEN/TC 250 “Structural
Eurocodes”, the secretariat of which is held by BSI. CEN/TC 250 is responsible for all Structural
Eurocodes and has been assigned responsibility for structural and geotechnical design matters by CEN.
This document is currently submitted to the Enquiry.
This document will supersede EN 1992-4:2018.
— Deletion of Seismic rules in EN 1992-4; transferred to the revised EN 1998-1-1;
— Adjustment of EN 1992-4 with respect to EN 1992-1-1:2023, 7.2.1.8 Concrete blow-out failure;
— Revision of provisions for supplementary reinforcement, in 7.2;
— Requirements for stiff baseplate in e.g. 6.2.1;
— Added informative Annex G with methods for checking fixture stiffness
— Added informative Annex H for an alternative method for the design of supplementary reinforcement
The Eurocodes have been drafted to be used in conjunction with relevant execution, material, product
and test standards, and to identify requirements for execution, materials, products and testing that are
relied upon by the Eurocodes.
The Eurocodes recognize the responsibility of each Member State and have safeguarded their right to
determine values related to regulatory safety matters at national level through the use of National
Annexes.
0 Introduction
0.1 Introduction to the Eurocodes
The Structural Eurocodes comprise the following standards generally consisting of a number of Parts:
— EN 1990 Eurocode — Basis of structural and geotechnical design
— EN 1991 Eurocode 1 — Actions on structures
— EN 1992 Eurocode 2 — Design of concrete structures
— EN 1993 Eurocode 3 — Design of steel structures
— EN 1994 Eurocode 4 — Design of composite steel and concrete structures
— EN 1995 Eurocode 5 — Design of timber structures
— EN 1996 Eurocode 6 — Design of masonry structures
— EN 1997 Eurocode 7— Geotechnical design
— EN 1998 Eurocode 8 — Design of structures for earthquake resistance
— EN 1999 Eurocode 9— Design of aluminium structures
— EN 19100 Eurocode 10 — Design of structural glass
— New parts are under development, e.g. Eurocode 11 for design of fibre-polymer composite structures
and Eurocode 12 design of tensioned membrane structures
The Eurocodes are intended for use by designers, clients, manufacturers, constructors, relevant
authorities (in exercising their duties in accordance with national or international regulations),
educators, software developers, and committees drafting standards for related product, testing and
execution standards.
NOTE Some aspects of design are most appropriately specified by relevant authorities or, where not specified,
can be agreed on a project-specific basis between relevant parties such as designers and clients. The Eurocodes
identify such aspects making explicit reference to relevant authorities and relevant parties.
0.2 Introduction to EN 1992 (all parts)
(1) EN 1992 applies to the design of buildings, bridges and civil engineering structures in plain,
reinforced and prestressed concrete. It complies with the principles and requirements for the safety and
serviceability of structures, the basis of their design and verification that are given in EN 1990 (all parts),
Basis of structural and geotechnical design.
(2) EN 1992 is only concerned with the requirements for resistance, serviceability, durability and fire
resistance of concrete structures. Other requirements, e.g. concerning thermal or sound insulation, are
not considered.
(3) EN 1992 is subdivided into various parts:
— EN 1992-1-1, Design of concrete structures — Part 1-1: General rules and rules for buildings, bridges
and civil engineering structures,
— EN 1992-1-2, Design of concrete structures —Part 1-2: Structural fire design,
— EN 1992-4, Design of concrete structures —Part 4: Design of fastenings for use in concrete.
0.3 Introduction to EN 1992-4
(1) EN 1992-4 describes the principles and requirements for safety, serviceability and durability of
fastenings in concrete. It is based on the limit state concept used in conjunction with a partial factor
method.
(2) EN 1992-4 also serves as a reference document for other CEN/TCs concerning fastenings in concrete.
(3) Numerical values for partial factors and other reliability parameters are recommended as basic values
that provide an acceptable level of reliability. They have been selected assuming that an appropriate level
of workmanship and of quality management applies. When EN 1992-4 is used as a base document by
other CEN/TCs the same values need to be taken.
0.4 Verbal forms used in the Eurocodes
The verb “shall” expresses a requirement strictly to be followed and from which no deviation is permitted
in order to comply with the Eurocodes.
The verb “should” expresses a highly recommended choice or course of action. Subject to national
regulation and/or any relevant contractual provisions, alternative approaches could be used/adopted
where technically justified.
The verb “may” expresses a course of action permissible within the limits of the Eurocodes.
The verb “can” expresses possibility and capability; it is used for statements of fact and clarification of
concepts.
0.5 National Annex for EN 1992-4
National choice is allowed in this document where explicitly stated within notes. National choice includes
the selection of values for Nationally Determined Parameters (NDPs).
The national standard implementing EN 1992-4 can have a National Annex containing all national choices
to be used for the design of buildings, bridges and civil engineering works to be constructed in the
relevant country.
When no national choice is given, the default choice given in this document is to be used.
When no national choice is made and no default is given in this document, the choice can be specified by
a relevant authority or, where not specified, agreed for a specific project by appropriate parties.
National choice is allowed in EN 1992-4 through notes to the following clauses:
4.4.1(2) 4.4.2.2(2) 4.4.2.3(1) 4.4.2.4(1)
4.7(2) A.2.2 C.2(2)
National choice is allowed in EN 1992-4 on the application of the following informative annexes:
Annex B Annex C Annex G Annex H
Annex I
The National Annex can contain, directly or by reference, non-contradictory complementary information
for ease of implementation, provided it does not alter any provisions of the Eurocodes.
1 Scope
1.1 General
(1) EN 1992-4 provides a design method for fastenings (connection of structural elements and non-
structural elements to structural components), which are used to transmit actions to the concrete.
NOTE 1 Additional rules for the transmission of the fastener loads within the concrete member to its supports
are given in EN 1992-1-1:2023, 4.4 and Annex A of this document.
NOTE 2 Inserts embedded in precast concrete elements during production, under Factory Production Control
(FPC) conditions and with the due reinforcement, intended for use only during transient situations for lifting and
handling, are covered by CEN/TR 15728.
(2) EN 1992-4 is intended for safety related applications in which the failure of fastenings can result in
collapse or partial collapse of the structure, cause risk to human life or lead to significant economic loss.
(3) The support of the fixture can be either statically determinate or statically indeterminate. Each
support can consist of one fastener or a group of fasteners.
(4) EN 1992-4 is valid for applications which fall within the scope of the EN 1992 (all parts). In
applications where special considerations apply, e.g. nuclear power plants or civil defence structures,
modifications can be necessary.
(5) EN 1992-4 does not cover the design of the fixture.
NOTE Rules for the design of the fixture are given in the appropriate standards meeting the requirements on
the fixture as given in this document.
1.2 Assumptions
(1) The assumptions of EN 1990 (all parts) apply to EN 1992-4
(2) This document uses the fastener design theory (see Figure 1.1) and applies to:
a) cast-in fasteners such as headed fasteners, anchor channels with rigid connection (e.g. welded,
forged) between anchor and channel;
b) post-installed mechanical fasteners such as expansion fasteners, undercut fasteners and concrete
screws;
c) post-installed bonded fasteners and bonded expansion fasteners.
(3) For other types of fasteners, modifications of the design provisions can be necessary.
(4) This document applies to fasteners with established suitability for the specified application in
concrete covered by provisions, which refer to this document and provide data required by this
document. The suitability of the fastener is stated in the relevant European Technical Product
Specification.
1 In fastener design theory the concrete tensile capacity is directly used to transfer loads into the concrete
component.
Figure 1.1 — Fastener design theory — Example
(4) This document applies to single fasteners and groups of fasteners. In a group of fasteners, the loads
are applied to the individual fasteners of the group by means of a common fixture. In a group of fasteners,
this document applies only if fasteners of the same type and size are used.
(5) The configurations of fastenings with cast-in place headed fasteners and post-installed fasteners
covered by this document are shown in Figure 1.2.
(6) For anchor channels, the number of anchors is not limited.
Key
1 fastener
2 fixture (baseplate)
a) 1) Fastenings without hole clearance for all edge distances and for all load directions.
2) Fastenings with hole clearance according to Table 6.1 situated far from edges (𝑐𝑐≥ max{10ℎ ; 60𝑑𝑑 })
i ef nom
for all load directions.
3) Fastenings with hole clearance according to Table 6.1 situated near to one or more edges (𝑐𝑐 <
i
{ })
max 10ℎ ; 60𝑑𝑑 loaded in tension only.
ef nom
b) Fastenings with hole clearance according to Table 6.1 situated near to one edge (𝑐𝑐 < max{10ℎ ; 60𝑑𝑑 }) for
i ef nom
all load directions.
c) Fastenings with hole clearance according to Table 6.1 situated near to two edges (e.g. corner) or more
( { })
𝑐𝑐 < max 10ℎ ; 60𝑑𝑑 for all load directions.
i ef nom
Figure 1.2 — Configuration of fastenings with headed and post-installed fasteners covered by
this document
(7) This document applies to fasteners with a minimum diameter or a minimum thread size of 6 mm (M6)
or a corresponding cross section. In case of fasteners for fastening statically indeterminate redundant
non-structural systems as addressed in 7.3, the minimum thread size is 5 mm (M5). The maximum
diameter of the fastener is not limited for tension loading but is limited to 60 mm for shear loading.
(8) EN 1992-4 applies to fasteners with embedment depth h ≥ 40 mm. Only for fastening statically
ef
indeterminate redundant non-structural systems as addressed in 7.3 smaller effective embedment depth
may be used. For fastenings with post-installed bonded fasteners, only fasteners with an embedment
depth h ≤ 20d are covered. The actual value for a particular fastener can be found in the relevant
ef
European Technical Product Specification.
(9) This document covers metal fasteners made of either carbon steel (EN ISO 898-1 and EN ISO 898-2,
EN 10025-1, EN 10080), stainless steel (EN 10088-2 and EN 10088-3, EN ISO 3506-1 and
EN ISO 3506-2) or malleable cast iron (ISO 5922). The surface of the steel can be coated or uncoated. This
document is valid for fasteners with a nominal steel tensile strength 𝑓𝑓 ≤ 1 000 N/mm . This limit does
uk
not apply to concrete screws.
(10) Loading on the fastenings covered by this document can be static, quasi-static and fatigue. The
suitability of the fastener to resist fatigue is specifically stated in the relevant European Technical Product
Specification. Anchor channels subjected to fatigue loading or seismic loading are not covered by this
document.
(11) The loading on the fastener resulting from the actions on the fixture (e.g. tension, shear, bending or
torsion moments or any combination thereof) will generally be axial tension and/or shear. When the
shear force is applied with a lever arm a bending moment on the fastener will arise. EN 1992-4 considers
axial compression on the fixture only when it is transmitted to the concrete either directly to the concrete
surface without acting on the embedded fastener load transfer mechanism or via fasteners suitable for
resisting compression.
(12) In case of anchor channels, shear in the direction of the longitudinal axis of the channel is not covered
by this document.
NOTE Design rules for anchor channels with loads acting in the direction of the longitudinal axis of the anchor
channel can be found in CEN/TR 17080.
(13) Design of fastenings under fire exposure is covered by this document (see informative Annex C).
(14) This document is valid for fasteners installed in members made of compacted normal weight
concrete with strength classes in the range C12/15 to C90/105 all in accordance with EN 206. The range
of concrete strength classes in which particular fasteners may be used is given in the relevant European
Technical Product Specification and may be more restrictive than stated above.
NOTE The suitability of a fastener for use in normal weight concrete with fibres and the equivalence of its
performance to compacted normal weight concrete without fibres is given in the relevant European Technical
Product Specification and can be limited to specific fibre properties.
(15) In general, fasteners are prequalified for applications in concrete members under static loading.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
NOTE See the Bibliography for a list of other documents cited that are not normative references, including
those referenced as recommendations (i.e. in ‘should’ clauses), permissions (‘may’ clauses), possibilities ('can'
clauses), and in notes.
EN 206, Concrete — Specification, performance, production and conformity
EN 1990-1:2023+A1:2026, Eurocode — Basis of structural and geotechnical design
EN 1991 (all parts), Eurocode 1 — Actions on structures
EN 1992-1-1:2023, Eurocode 2 - Design of concrete structures - Part 1-1: General rules and rules for
buildings, bridges and civil engineering structures
EN 1992-1-2, Eurocode 2 - Design of concrete structures - Part 1-2: Structural fire design
EN 1998-1-1:2024, Eurocode 8 - Design of structures for earthquake resistance - Part 1-1: General rules and
seismic action
EN 1998 (all parts), Eurocode 8 — Design of structures for earthquake resistance
3 Terms, definitions, symbols and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions in EN 1990 (all parts) and the following
apply.
3.1.1
anchor
fastener
element made of steel or malleable iron either cast into concrete or post-installed into a hardened
concrete member and used to transmit applied loads (see Figure 3.1 to Figure 3.3)
Note 1 to entry: Both terms may be used interchangeably. For translation purposes one may opt to use only one
to avoid misunderstandings. In this document the term anchor is primarily used in the context of anchor channels.
3.1.2
anchor channel
steel profile with rigidly connected anchors (see Figure 3.2) installed prior to concreting
Note 1 to entry: In the case of anchor channels, two or more steel anchors are rigidly connected to the back of the
channel and embedded in concrete.
3.1.3
attached element
structural or non-structural component that is part of the fixture
3.1.4
base material
concrete member in which the fastener or anchor channel is installed
3.1.5
baseplate
fixture
element that is being fixed to the base material and transmits loads to the fastener, group of fasteners or
anchor channel and to the concrete member in case of bending or compression forces (except in case of
stand-off applications)
Note 1 to entry: Typically, steel elements are used as fixture or baseplate.
3.1.6
bending
bending effect induced by a shear load applied with a lever arm with respect to the surface of the concrete
member
3.1.7
bonded expansion fastener
bonded fastener designed such that the fastener element can move relative to the hardened bonding
compound resulting in follow-up expansion (see Figure 3.3h))
3.1.8
bonded fastener
fastener placed into a hole drilled in hardened concrete, which derives its resistance from a bonding
compound placed between the wall of the hole in the concrete and the embedded portion of the fastener
(see Figure 3.3g))
3.1.9
cast-in fastener
headed bolt, headed stud, internal threaded socket with head at the embedded end or anchor channel
installed before placing the concrete, see also headed fastener
3.1.10
channel bolt
screw or bolt which connects the element to be fixed to the anchor channel (see Figure 3.2)
3.1.11
characteristic edge distance
edge distance required to ensure that the edge does not influence the characteristic resistance of a
fastening
3.1.12
characteristic resistance
5 % fractile of the resistance
Note 1 to entry: Value with a 95 % probability of being exceeded, with a confidence level of 90 %.
3.1.13
characteristic spacing
spacing required to ensure the characteristic resistance of a single fastener
3.1.14
combined pull-out and concrete failure of bonded fasteners
failure mode in which failure occurs at the interface between the bonding material and the base material
or between the bonding material and the fastener element (bond failure) and contains a concrete cone at
the top end
3.1.15
combined tension and shear loads
oblique load
tension and shear load applied simultaneously
3.1.16
concrete blow-out failure
spalling of the concrete on the side face of the concrete element at the level of the embedded head with
no major breakout at the top concrete surface
Note 1 to entry: This is usually associated with fasteners with small side cover and deep embedment.
3.1.17
concrete breakout failure
failure that corresponds to a wedge or cone of concrete surrounding the fastener, group of fasteners or
anchor of an anchor channel being separated from the base material
3.1.18
concrete pry-out failure
failure that corresponds to the formation of a concrete spall opposite to the loading direction under shear
loading
3.1.19
concrete related failure modes
3.1.19.1
failure mode under tension loading
pull-out failure, combined pull-out and concrete failure (bonded fasteners), concrete cone failure,
concrete blow-out failure, concrete splitting failure, anchorage failure of supplementary reinforcement
3.1.19.2
failure mode under shear loading
concrete pry-out failure, concrete edge failure
3.1.20
concrete screw
threaded fastener screwed into a predrilled hole where threads create a mechanical interlock with the
concrete (see Figure 3.3f))
3.1.21
concrete splitting failure
concrete failure mode in which the concrete fractures along a plane passing through the axis of the
fastener or fasteners or anchors of an anchor channel
3.1.22
deformation-controlled expansion fastener
post-installed fastener that derives its tensile resistance by expansion against the side of the drilled hole
through movement of an internal plug in the sleeve (see Figure 3.3c)) or through movement of the sleeve
over an expansion element (plug), and with which, once set, no further expansion can occur
3.1.23
displacement
movement of the loaded end of the fastener relative to the concrete member into which it is installed in
the direction of the applied load; or, in the case of anchor channels, movement of a channel bolt
(see Figure 3.2) or the anchor channel relative to the concrete element
Note 1 to entry: In tension tests, displacement is measured parallel to the axis of the fastener; in shear tests,
displacement is measured perpendicular to the axis of the fastener.
3.1.24
ductile steel fastener
element with sufficient ductility
Note 1 to entry: The ductility conditions are given in the relevant subclauses.
3.1.25
edge distance
distance from the edge of the concrete member to the centre of the fastener or anchor of an anchor
channel
3.1.26
effective embedment depth
overall depth through which the fastener or anchor of an anchor channel transfers force to the
surrounding concrete; see Figure 3.1 to Figure 3.3
Note 1 to entry: The effective embedment depth is given in the relevant European Technical Product
Specification.
3.1.27
European Technical Product Specification
European Standard (EN), European Technical Assessment (ETA) for fastener or anchor channel based on
a European Assessment Document (EAD) or a transparent and reproducible assessment that complies
with all requirements of the relevant EAD
3.1.28
fastening
assembly of fixture (baseplate) and fasteners or anchor channel used to transmit loads to concrete

Key
a) without anchor plate, inclination of head β ≤ 30°
b) with a large anchor plate at least in one direction, 𝑏𝑏 > 0,5 ℎ or 𝑡𝑡 > 0,2 ℎ
1 nom nom
c) with a small anchor plate in both directions, 𝑏𝑏 ≤ 0,5 ℎ and 𝑡𝑡≤ 0,2 ℎ
1 nom nom
Figure 3.1 — Definition of effective embedment depth h for headed fasteners
ef
Key
1 anchor
2 connection between anchor and channel
3 channel
4 channel lip
5 channel bolt
a) ℎ for anchor channels (see 7.4.1.5(1) and 7.4.1.5 (1)b))
ef
∗
b) ℎ for anchor channels (see 7.4.1.5 (1)a))
ef
Figure 3.2 — Definitions for anchor channels

Key
a) torque-controlled fastener, sleeve type e) undercut fastener, type 2
b) torque-controlled fastener, wedge type f) concrete screw
c) deformation-controlled fastener g) bonded fastener
d) undercut fastener, type 1 h) bonded expansion fastener
Figure 3.3 — Definition of effective embedment depth h for post-installed fasteners – Examples
ef
3.1.29
flexure
bending effect in the channel of an anchor channel induced by a tension load
3.1.30
group of fasteners
number of fasteners with identical dimensions and characteristics acting together to support a common
fixture, where the spacing of the fasteners does not exceed the characteristic spacing
Note 1 to entry: Fasteners or group of fasteners connected via a single fixture but separated by a distance larger
than the characteristic spacing s are considered separate fasteners of groups of fasteners (see Figure 3.4b) and c)).
cr
Key
a) s ≤ s , s ≤ s : group of 4 fasteners
1 cr 2 cr
b) s > s , s ≤ s : 2 groups of 2 fasteners
1 cr 2 cr
c) s1 > scr: 2 single fasteners
Figure 3.4 — Examples of fastener configurations connected via a single fixture
3.1.31
headed fastener
cast-in steel fastener with a head at the embedded end (see Figure 3.1) that derives its tensile resistance
from mechanical interlock at the head of the fastener
3.1.32
mechanical interlock
load transfer to a concrete member via interlocking surfaces
3.1.33
minimum allowable edge distance
smallest allowable distance to allow adequate placing and compaction of concrete (cast-in fasteners) and
to avoid damage to the concrete during installation (post-installed fasteners), given in the European
Technical Product Specification
3.1.34
minimum member thickness
smallest value for member thickness, in which a fastener or an anchor channel is allowed to be installed,
given in the European Technical Product Specification
3.1.35
minimum spacing
smallest value for distance between two fasteners to allow adequate placing and compaction of concrete
(cast-in fasteners) and to avoid damage to the concrete during installation (post-installed fasteners),
measured centreline to centreline, given in the European Technical Product Specification
3.1.36
non-rigid fixture
non-rigid flexible fixture
fixture that does not comply with the provision of 6.2.1e)
3.1.37
post-installed fastener
fastener installed in hardened concrete (see Figure 3.3)
3.1.38
pull-out failure
both pull-out failure of mechanical fasteners and combined pull-out and concrete failure of bonded
fasteners
3.1.39
pull-out failure of mechanical fasteners and bonded expansion fastener
failure mode in which the fastener pulls out of the concrete without development of the full concrete
resistance or in case of post-installed mechanical fasteners a failure mode in which the fastener body
pulls through the expansion sleeve without development of the full concrete resistance
3.1.40
rigid fixture
fixture that complies with 6.2.1.e)
3.1.41
shear load
load
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