oSIST prEN IEC 61084-2-1:2023

SLOVENSKI STANDARD
oSIST prEN IEC 61084-2-1:2023
01-februar-2023
Sistemi kabelskih korit in sistemi kabelskih cevi za električne inštalacije - 2-1. del:
Posebne zahteve - Sistemi kabelskih korit in sistemi kabelskih cevi za montažo na
stene in strope
Cable trunking systems and cable ducting systems for electrical installations - Part 2-1:
Particular requirements - Cable trunking systems and cable ducting systems intended for
mounting on walls and ceilings
Elektroinstallationskanalsysteme für elektrische Installationen - Teil 2-1: Besondere
Anforderungen für Elektroinstallationskanalsysteme für Wand und Decke
Systèmes de goulottes et systèmes de conduits-profilés pour installations électriques -
Partie 2-1 : Exigences particulières - Systèmes de goulottes et systèmes de conduits-
profilés prévus pour être montés sur les murs et les plafonds
Ta slovenski standard je istoveten z: prEN IEC 61084-2-1:2022
ICS:
29.120.10 Inštalacijske cevi za Conduits for electrical
električne namene purposes
oSIST prEN IEC 61084-2-1:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN IEC 61084-2-1:2023

---------------------- Page: 2 ----------------------
oSIST prEN IEC 61084-2-1:2023
DRAFT
EUROPEAN STANDARD
prEN IEC 61084-2-1
NORME EUROPÉENNE

EUROPÄISCHE NORM
December 2022
ICS 29.060.01; 29.120.10 Will supersede EN 50085-2-1:2006; EN 50085-2-
1:2006/A1:2011
English Version
Cable trunking systems and cable ducting systems for electrical
installations - Part 2-1: Particular requirements - Cable trunking
systems and cable ducting systems intended for mounting on
walls and ceilings
(IEC 61084-2-1:2017)
Systèmes de goulottes et systèmes de conduits-profilés Elektroinstallationskanalsysteme für elektrische
pour installations électriques - Partie 2-1 : Exigences Installationen - Teil 2-1: Besondere Anforderungen für
particulières - Systèmes de goulottes et systèmes de Elektroinstallationskanalsysteme für Wand und Decke
conduits-profilés prévus pour être montés sur les murs et (IEC 61084-2-1:2017)
les plafonds
(IEC 61084-2-1:2017)
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2023-03-03.

The text of this draft consists of the text of IEC 61084-2-1:2017.

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

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the 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 Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 72100 Ref. No. prEN IEC 61084-2-1:2022 E

---------------------- Page: 3 ----------------------
oSIST prEN IEC 61084-2-1:2023
prEN IEC 61084-2-1:2022 (E)
European foreword
This document (prEN IEC 61084-2-1:2022) consists of the text of document IEC 61084-2-1:2017,
prepared by SC 23A "Cable management systems" of IEC/TC 23 "Electrical accessories".
This document is currently submitted to the Enquiry.
The following dates are proposed:
• latest date by which the existence of this document (doa) dor + 6 months
has to be announced at national level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of an
identical national standard or by endorsement
• latest date by which the national standards (dow) dor + 60 months
conflicting with this document have to be withdrawn (to be confirmed or
modified when voting)
This document will supersede EN 50085-2-1:2006 and all of its amendments and corrigenda (if any).
This document has been prepared under a Standardization Request given to CENELEC by the
European Commission and the European Free Trade Association, and supports essential requirements
of EU Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZZ, which is an integral part
of prEN IEC 61084-2-1:2022/prAA:2022.

2

---------------------- Page: 4 ----------------------
oSIST prEN IEC 61084-2-1:2023



IEC 61084-2-1

®


Edition 2.0 2017-03




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Cable trunking systems and cable ducting systems for electrical installations –

Part 2-1: Particular requirements – Cable trunking systems and cable ducting

systems intended for mounting on walls and ceilings




Systèmes de goulottes et systèmes de conduits-profilés pour installations

électriques –


Partie 2-1: Exigences particulières – Systèmes de goulottes et systèmes de

conduits-profilés prévus pour être montés sur les murs et les plafonds












INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 29.060.01; 29.120.10 ISBN 978-2-8322-4118-9



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 5 ----------------------
oSIST prEN IEC 61084-2-1:2023
– 2 – IEC 61084-2-1:2017 © IEC 2017
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General requirements . 6
5 General conditions for tests . 6
6 Classification . 6
7 Marking and documentation . 8
8 Dimensions. 8
9 Construction . 8
10 Mechanical properties. 10
11 Electrical properties . 15
12 Thermal properties . 15
13 Fire hazard . 15
14 External influences . 16
15 Electromagnetic compatibility . 16
Annex A (informative) Types of cable trunking systems (CTS) and cable ducting
systems (CDS) . 24
Annex B (normative) CTS/CDS IK code . 25

Figure 101 – Types and application of CTS/CDS for wall or ceiling installation . 16
Figure 102 – Arrangement for cable support test according to 10.2.2 . 17
Figure 103 – Arrangement for cable support test according to 10.2.3 . 17
Figure 104 – Arrangement for cable support test according to 10.2.4 . 18
Figure 105 – Arrangement for cable support test according to 10.2.5 . 18
Figure 106 – Impact test for installation and application – Principles for arrangement . 19
Figure 107 – Impact test for installation and application – Examples for arrangement . 21
Figure 108 – Arrangement for linear deflection test . 22
Figure 109 – Example of arrangement for CDS compression test . 23

---------------------- Page: 6 ----------------------
oSIST prEN IEC 61084-2-1:2023
IEC 61084-2-1:2017 © IEC 2017 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

CABLE TRUNKING SYSTEMS AND CABLE DUCTING
SYSTEMS FOR ELECTRICAL INSTALLATIONS –

Part 2-1: Particular requirements – Cable trunking systems and cable
ducting systems intended for mounting on walls and ceilings

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61084-2-1 has been prepared by subcommittee 23A: Cable
management systems, of IEC technical committee 23: Electrical accessories.
This second edition cancels and replaces the first edition published in 1996. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• classification;
• construction;
• mechanical and electrical properties.
This International Standard is to be used in conjunction with IEC 61084-1:2017.

---------------------- Page: 7 ----------------------
oSIST prEN IEC 61084-2-1:2023
– 4 – IEC 61084-2-1:2017 © IEC 2017
The text of this standard is based on the following documents:
FDIS Report on voting
23A/827/FDIS 23A/834/RVD

Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part of the IEC 61084 series supplements or modifies the corresponding clauses of
IEC 61084-1:2017 as follows:
– where no particular clause or subclause of IEC 61084-1 is mentioned, the corresponding
clause or subclause of IEC 61084-1 applies as far as is reasonable;
– where “addition” or “replacement” is stated, the relevant text of IEC 61084-1 is to be
adapted accordingly;
– subclauses, figures and tables which are additional to those in IEC 61084-1 are numbered
starting from 101.
A list of all parts in the IEC 61084 series, published under the general title Cable trunking and
cable ducting systems for electrical installations, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

---------------------- Page: 8 ----------------------
oSIST prEN IEC 61084-2-1:2023
IEC 61084-2-1:2017 © IEC 2017 – 5 –
CABLE TRUNKING SYSTEMS AND CABLE DUCTING
SYSTEMS FOR ELECTRICAL INSTALLATIONS –

Part 2-1: Particular requirements – Cable trunking systems and cable
ducting systems intended for mounting on walls and ceilings



1 Scope
This part of the IEC 61084 series specifies requirements and tests for cable trunking systems
(CTS) and cable ducting systems (CDS) intended for the accommodation, and where
necessary for the electrically protective separation, of insulated conductors, cables and
possibly other electrical equipment in electrical and/or communication systems installations.
The maximum voltage of these installations is 1 000 V AC and 1 500 V DC.
These systems are intended for mounting on walls and/or ceilings. They can be embedded,
installed in a flush or semi-flush state, surface mounted or mounted away from the surface
using fixing devices.
This document does not apply to conduit systems, cable tray systems, cable ladder systems,
power track systems or equipment covered by other standards.
2 Normative references
This clause of Part 1 is applicable, except as follows:
Addition:
IEC 60068-2-75:2014, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
IEC 60228:2004, Conductors of insulated cables
IEC 61084-1:2017, Cable trunking systems and cable ducting systems for electrical
installations – Part 1: General requirements
ISO 535:2014, Paper and board – Determination of water absorptiveness – Cobb method
ISO 536:2012, Paper and board – Determination of grammage
3 Terms and definitions
This clause of Part 1 is applicable, except as follows:
3.1 Replace Note 1 to entry by:
Note 1 to entry: Different types of CTS are shown in Figure 101 and explained in Annexe A.
3.2 Replace Note 1 to entry by:
Note 1 to entry: Different types of CDS are shown in Figure 101 and explained in Annex A.

---------------------- Page: 9 ----------------------
oSIST prEN IEC 61084-2-1:2023
– 6 – IEC 61084-2-1:2017 © IEC 2017
Addition:
3.101
type 2 CTS/CDS
distribution CTS/CDS
CTS/CDS which provides at least the following functions:
• in line junction between two trunking lengths or ducting lengths,
• internal and external changes of direction between two trunking lengths or ducting lengths,
• flat change of direction between two trunking lengths or ducting lengths with the exception
of certain systems where such a function is not required e.g. skirting CTS/CDS,
• "T" function between three trunking lengths or ducting lengths with the exception of certain
systems where such a function is not required e.g. bench CTS,
• termination of a trunking length or a ducting length
3.102
type 3 CTS/CDS
installation CTS/CDS
distribution CTS/CDS which provides in addition apparatus mounting function
3.103
type 1 CTS/CDS
CTS/CDS that cannot be defined as a type 2 CTS/CDS or as a type 3 CTS/CDS
3.104
surface mounting CTS/CDS
CTS/CDS intended for mounting on a surface
3.105
flush-mounting CTS/CDS
CTS/CDS intended for mounting flush with the surface so that at least 90 % of the product
depth is recessed below the finished surface when installed according to manufacturer’s
instructions
3.106
semi-flush mounting CTS/CDS
CTS/CDS intended to fit within a mounting surface so that more than 10 % of the product
depth projects from the finished surface
4 General requirements
This clause of Part 1 is applicable.
5 General conditions for tests
This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable, except as follows:

---------------------- Page: 10 ----------------------
oSIST prEN IEC 61084-2-1:2023
IEC 61084-2-1:2017 © IEC 2017 – 7 –
Additional subclauses:
6.101 According to the intended installation positions
NOTE More than one classification can be declared.
6.101.1 CDS embedded in the wall or ceiling
6.101.2 CTS/CDS flush in the wall or ceiling
6.101.2.1 CTS/CDS flush in the wall
6.101.2.2 CTS/CDS flush in the ceiling
6.101.3 CTS/CDS semi-flush or surface-mounted on the wall or ceiling
6.101.3.1 CTS/CDS semi-flush or surface-mounted on the wall
6.101.3.2 CTS/CDS semi-flush or surface-mounted on the ceiling
6.101.3.3 CTS/CDS wall fixed and supported by the floor
6.101.3.4 CTS/CDS wall fixed and supported by a horizontal surface other than the
floor
6.101.4 CTS/CDS mounted away from the wall or ceiling using fixing devices
6.102 According to the prevention of contact between liquids and insulated
conductors and live parts in case of CTS/CDS mounted in a skirting position
and wet-treatment of floor
6.102.1 Not declared
6.102.2 Relying completely on manufacturer’s instructions restricting the
installation position of the CTS/CDS
6.102.3 Relying on manufacturer’s instructions allowing all installation positions of
the CTS/CDS but restricting the position of insulated conductors and live
parts in CTS/CDS
6.102.4 Relying on manufacturer’s instructions allowing all installation positions of
the CTS/CDS and all positions of insulated conductors and live parts in
CTS/CDS
NOTE Installation position refers to the distance between CTS/CDS and the floor.
6.103 According to the type
6.103.1 Type 1 CTS/CDS
6.103.2 Type 2 CTS/CDS (distribution CTS/CDS)
6.103.3 Type 3 CTS/CDS (installation CTS/CDS)
6.104 According to resistance to compression for CDS
6.104.1 CDS for compression 125 N
6.104.2 CDS for compression 320 N
6.104.3 CDS for compression 750 N
6.104.4 CDS for compression 1 250 N
6.104.5 CDS for compression 4 000 N

---------------------- Page: 11 ----------------------
oSIST prEN IEC 61084-2-1:2023
– 8 – IEC 61084-2-1:2017 © IEC 2017
7 Marking and documentation
This clause of Part 1 is applicable, except as follows:
7.3 Replacement:
7.3 The manufacturer shall provide in his documentation all information necessary for the
proper and safe installation and use. It shall include:
• components of the system;
• function of the system components and their assemblies;
• classification of the system in accordance with Clause 6;
• for type 1 CTS/CDS the list of functions;
• linear impedance, in Ω/m, of trunking length or ducting length of system declared
according to 6.5.1;
• rated voltage of CTS/CDS declared according to 6.6.2;
2
• usable cross sectional area, in mm , for cables of the CTS/CDS;
NOTE Certain system components when mounted can reduce the usable cross sectional area for cables.
• instructions to reach the declared classification and functions of the system. These
instructions shall include the recommended installation positioning for the CTS/CDS to
ensure that the declared IP classification is maintained after installation.
Compliance is checked by inspection.
8 Dimensions
This clause of Part 1 is applicable, except as follows:
Addition:
There are no dimension requirements.
9 Construction
This clause of Part 1 is applicable, except as follows:
Additional subclauses:
9.101 Assembling
System components shall fit correctly.
Compliance is checked by inspection.
9.102 Contact between liquids and insulated conductors and live parts
CTS/CDS declared according to 6.102.2, 6.102.3 or 6.102.4 shall prevent liquids coming into
contact with insulated conductors and live parts during wet-treatment of floor.

---------------------- Page: 12 ----------------------
oSIST prEN IEC 61084-2-1:2023
IEC 61084-2-1:2017 © IEC 2017 – 9 –
Compliance is checked by inspection and measurement when the area intended to
accommodate insulated conductors is at least 10 mm above the floor due to the following
reasons:
• design, or
• manufacturer’s instructions restricting the installation position of the CTS/CDS, or
• manufacturer’s instructions allowing all installation positions of the CTS/CDS but
restricting the position of insulated conductors and live parts in CTS/CDS.
In all other cases, compliance is checked by the following test carried out on an assembly or
assemblies.
An assembly is made of one or more trunking lengths or ducting lengths with the relevant
system component, if any, to fulfil the various functions of the system and prepared according
to the manufacturer’s instructions. More than one assembly may be necessary to fulfil the
various functions of the system. In each direction, the length L of trunking length or ducting
length coming out of the functional area associated with the function of the system is as long
as the width W of the trunking length or ducting length, or 250 mm, whichever is the greater.
The tolerance of L is ± 25 mm.
NOTE 1 Functional area refers, for example, to a fitting, an apparatus mounting device, a junction as shown in
Figure 106.
The assembly is fixed according to manufacturer’s instructions to an appropriate support. The
ends of the assembly are closed according to manufacturer’s instructions.
A (5 ± 1) mm wide strip of absorbent paper is placed on the lowest internal surface of
CTS/CDS intended for the accommodation of insulated conductors. If this lowest internal
surface is horizontal, the strip is placed approximately on the centre line of the surface. The
absorbent paper has a water absorptive height longitudinal of 75 mm per 10 min according to
2
ISO 535 and a basis weight of 250 g/m according to ISO 536. The length of the strip is such
that it covers the whole length of the assembly.
NOTE 2 When the tested function of the system includes a change of direction, the length of paper can be made
of more than one strip.
Provisions are made such that the absorbent paper makes contact with the lowest internal
surface of CTS/CDS intended for the accommodation of insulated conductors along the whole
length of the assembly. These provisions shall not influence absorption by the paper.
The assembly is carefully placed in a tray containing water to simulate a (10 , 0/-1) mm height
of water on the floor.
NOTE 3 For easy measurement of wet area, coloured water can be used.
After (15 ± 1) s, the assembly is removed from the tray and the exterior of the assembly is
immediately wiped.
After careful removal of the access covers, if any, the absorbent paper is removed. Within
5 min after the removal of the assembly from the tray, the lengths of the wet areas are
measured on the centre line of the strips.
For each tested function, the length of any wet area in the strip of absorbent paper shall be
shorter than 50 mm.

---------------------- Page: 13 ----------------------
oSIST prEN IEC 61084-2-1:2023
– 10 – IEC 61084-2-1:2017 © IEC 2017
10 Mechanical properties
This clause of Part 1 is applicable, except as follows:
10.2 Cable support test
Replacement:
10.2 Cable support test
10.2.1 General test conditions
Each test is made on one new sample of trunking length or ducting length having a length of
250 mm ± 5 mm.
Trunking length or ducting length having a usable cross sectional area lower than or equal to
2
500 mm do not need to be tested.
The sample is securely fixed, using 10 mm external diameter flat metallic washers and
metallic screws to a rigid smooth support such as a plywood board 16 mm thick. When 10 mm
external diameter is too large, a suitable smaller washer is used. Fixing(s) are positioned at
(200 ± 5) mm centres along the length of the sample.
Within the width of the sample, the fixing is made as close as possible to each side wall. For
triangular or similar cross section CTS/CDS, the sample is fixed only to the wall.
If the manufacturer's instructions require the use of cable retainers, the test is carried out
using the cable retainers and if possible symmetrically fixed along the length.
2
The sample is subjected to an evenly distributed load of 1,0 g/mm of the declared usable
area for cables, per metre length. The load is distributed between the compartments
proportionally to the declared usable area. The load consists of copper insulated conductors
or cables complying with class 5, Table 3 of IEC 60228:2004 or flexible insulated conductors
or cables of similar mass per meter.
To allow for settlement of the sample, a pre-load of 10 % of the load is applied and removed
after 5 min ± 30 s. The measurement apparatus is then calibrated to zero. No pre-load is
necessary for CTS/CDS classified in accordance with 6.101.3.3.
Non-metallic and composite trunking lengths or non-metallic and composite ducting lengths
are tested at the maximum application temperature declared by the manufacturer according to
Table 3 of Part 1 with a tolerance of ± 2 °C.
2
Insulated conductors or cables of 25 mm nominal cross section are placed in the sample so
that approximately 50 % of the load is achieved. If the dimensions of the compartment do not
2 2
permit the accommodation of 25 mm insulated conductor or cable, 2,5 mm nominal cross
2
section insulated conductors or cables are used. Insulated conductors or cables of 2,5 mm
nominal cross section are placed on top of the larger cables to achieve the total load within a
tolerance of ± 5 g.
The load is applied for 120 min (+5/0) min. After this period, the deflection is measured at
approximately the middle of the length.

---------------------- Page: 14 ----------------------
oSIST prEN IEC 61084-2-1:2023
IEC 61084-2-1:2017 © IEC 2017 – 11 –
10.2.2 Test for wall fixed CTS/CDS
This test applies to CTS/CDS declared according to 6.101.3.1 and/or 6.101.3.3.
The trunking length or ducting length is mounted as shown in Figure 102, following 10.2.1.
The vertical deflection F is measured as follows:
• for rectangular or similar cross section CTS/CDS, on the lower edge as shown in
Figure 102a;
• for non-rectangular cross section CTS/CDS, as shown in Figure 102b.
The vertical deflection F shall not exceed 10 % of the external horizontal dimension X, with a
maximum of 10 mm. This deflection criteria does not apply to CTS/CDS classified according
to 6.101.3.3.
Access covers o
...