ISO/DTR 25741-1
(Main)Lifts and escalators subject to seismic conditions — Compilation report — Part 1: Rule by rule comparison
Lifts and escalators subject to seismic conditions — Compilation report — Part 1: Rule by rule comparison
Ascenseurs et escaliers mécaniques soumis aux conditions sismiques — Rapport de compilation — Partie 1: Comparaison règle par règle
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FINAL DRAFT
Technical
Report
ISO/TC 178
Lifts and escalators subject to
Secretariat: AFNOR
seismic conditions — Compilation
Voting begins on:
report —
2025-07-30
Part 1:
Voting terminates on:
2025-09-24
Rule by rule comparison
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MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
Technical
Report
ISO/TC 178
Lifts and escalators subject to
Secretariat: AFNOR
seismic conditions — Compilation
Voting begins on:
report —
Part 1:
Voting terminates on:
Rule by rule comparison
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 SUPPOR TING DOCUMENTATION.
© ISO 2025
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
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TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
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CH-1214 Vernier, Geneva
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Published in Switzerland Reference number
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Rule by rule comparison . 1
4.1 General .1
4.2 Elevators and lifts .2
4.3 Escalators and moving walkways .45
Bibliography .52
iii
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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 178, Lifts, escalators and moving walks.
This first edition of ISO/TR 25741-1, together with ISO/TR 25741-2, cancels and replaces ISO/TR 25741:2008,
which has been technically revised.
A list of all parts in the ISO 25741 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
The work on a comparison of world-wide standards which includes the American, Australian, European
and Japanese escalator and moving walk safety code was started in 2016, with the aim to prepare a cross
reference between the relevant sections of these standards and to analyse the differences on selected
subjects. The goal at that time was to prepare a document which would provide reference information to
assist national committees when reviewing and revising individual standards, which can initiate a gradual
convergence of the technical requirements.
This document is intended to aid standards writers in developing their seismic requirements, and to help
standards users understand the basis for the requirements as they are applied throughout the world.
This document is not intended to replace existing seismic standards which have possibly been updated.
Conclusions are arrived at in some cases, but only where there is unanimity amongst the various experts. In
other cases, the reasons for the divergent views are expressed.
This document is intended to be read in conjunction with the various seismic standards. The information
contained in this document does not necessarily represent the opinions of these standards writing
organizations (see the Bibliography for references). This document was prepared with EN 81-77:2018 and EN
115-1: 2017 Annex M. All other codes are not in their normal sequence and logical order. They are structured
differently to EN 81-77:2018 and EN 115-1: 2017 Annex M.
v
FINAL DRAFT Technical Report ISO/DTR 25741-1:2025(en)
Lifts and escalators subject to seismic conditions —
Compilation report —
Part 1:
Rule by rule comparison
1 Scope
This document compares the requirements of selected topics as covered by the following seismic standards
(excluding local deviations):
a) EN 81-77:2018 (EU);
b) ASME 17.1 16 CH 8.4 (USA) / CSA B44-16 CH 8.4 (CAN);
c) NZS 4332-1997, NZS1170.5-2004 (NZ);
d) AS 1735.1:2016, AS 1735.5 :2001 (AUS);
e) BSLJ / GFS:2016 (Japan).
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Rule by rule comparison
4.1 General
This comparison is made between EN 81-77:2018, EN 115-1:2017, Annex M, and the rules in ASME A17.116/
CSA B44-16, AS 1735.1:2016, AS 1735.5 (EN 115:1995), NZS 4332-1997, NZS1170.5-2004 and Japanese
Building Codes.
There are other standards, see listed in the Scope (Clause 1), in the countries concerned that have
requirements which are not shown in the escalator/moving walk standards compared, but address some of
the same requirements as EN 81-77/EN 115-1:2017, Annex M.
EN 81-77 / EN 115-1:2017, Annex M clause numbers in brackets serve only as a reference point. They do not
exist in the published version of EN 81-77/EN 115-1:2017, Annex M.
Figure 1 — Overview of different areas
It should be noted that in addition to the above listed standards and other regulations, escalators and
moving walks may be required to conform to the requirements of other standards as appropriate. Where
ISO/TC 178 was aware of these standards, they are mentioned in the bibliography.
4.2 Elevators and lifts
Table 1 — Comparison of requirements for elevators and lifts
EN 81-77:2018 ASME 17.1 16 CH 8.4 (USA) / NZS 4332-1997, AS 1735.1:2016, BSLJ / GFS:2016
(EU) CSA B44-16 CH 8.4 (CAN) NZS1170.5-2004, (NZ) AS 1735.5 :2001, (AUS) (Japan)
0 Introduction SECTION 8.4 1.5.1 Structural design No such comparable introduction No such comparable introduction
0.1 General ELEVATOR SEISMIC REQUIREMENTS The structural design of the lift
installation including its various com-
The machinery concerned and the (a) – (d)
ponents and the building housing the
extent to which hazards, hazardous
installation are outside of the scope
situations and events are covered, are
of this Standard. Designs need to be
indicated in the scope of this standard.
undertaken by a suitably qualified
This document is a Type C Standard as
designer, using verification methods
stated in EN ISO 12100.
B1/VM1 and EN 81-77 as considered
When provisions of this C standard
appropriate, with proposals approved
are different from those which are
by the building consent authority as
stated in type A or B standards, the
part of the building consent process.
provisions of this Type C standard
Note: Although this Standard provides
take precedence over the provisions
some design criteria and informa-
of the other standards, for machines
tion on the lift installation, it does
that have been designed and built ac-
not fully account for all loadings that
cording to the provisions of this Type
must be taken into consideration, e.g.
C standard.
earthquake. The overall structural
design of the lift installation and of its
components is therefore outside of this
scope of this Standard
0.2 General remarks No such comparable introduction No such comparable introduction No such comparable introduction No such comparable introduction
0.2.1 The object of this standard is to
define additional safety rules related
to passenger and goods/passenger-
lifts with a view to safeguarding
persons and objects against the risks
described below associated with the
use, maintenance, inspection and
emergency operation of lifts subject to
seismic conditions.
0.2.2 The aim of this European Stand-
ard is to:
— avoid loss of life and reduce the
extent of injuries;
— avoid people trapped in the lift;
— avoid damage;
— avoid environmental problems
related to oil leakage;
— reduce the number of lifts out of
service.
0.3 Principles No such comparable principles No such comparable principles No such comparable principles No such comparable principles
Risk analysis, terminology and tech-
nical solutions have been considered
taking into account the methods
of EN ISO 12100 and EN ISO 14798
standards.
Table 1 (continued)
EN 81-77:2018 ASME 17.1 16 CH 8.4 (USA) / NZS 4332-1997, AS 1735.1:2016, BSLJ / GFS:2016
(EU) CSA B44-16 CH 8.4 (CAN) NZS1170.5-2004, (NZ) AS 1735.5 :2001, (AUS) (Japan)
0.4 Assumptions No such comparable assumptions No such comparable assumptions No such comparable assumptions No such comparable assumptions
It is assumed that negotiations have
been made for each contract between
the customer and the supplier/install-
er about the design acceleration (ad) to
be considered and the most effective
position of the seismic detection
system, if any, and of the primary wave
detection system, if any. The building
designer or the lift owner should pro-
vide the design acceleration (ad) which
will be documented in the information
for the owner provided by the in
...
ISO/TR 25471DTR 25741-1(E)
ISO/TC 178
Secretariat: AFNOR
Date: 2025-0507-15
Lifts and escalators subject to seismic conditions — Compilation
report – —
Part 1:
Rule by rule comparison
Warning for WDs and CDs
This document is not an ISO International Standard. It is distributed for review and comment. It is subject to
change without notice and may not be referred to as an International Standard.
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.
ISO #####-#:####(X)
2 © ISO #### – All rights reserved
ISO/TR 25471DTR 25741-1:2025(E:(en)
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland
iii
ISO #####-#:####(X/DTR 25741-1:(en)
Contents
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Rule by rule comparison . 1
Bibliography . 88
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Rule by rule comparison . 2
4.1 General . 2
4.2 Elevators and Lifts . 4
4.3 Escalators and Moving walkways . 60
Bibliographie . 70
1 References in the compared codes . 70
1.1 References in EN 81-77:2017 . 70
1.2 References in EN 115:2017 (Annex M) . 70
2 References in ASME A17.1-16/CSA B44-16 . 72
3 References in AS . 73
3.1 AS 1735 Part 1 . 73
3.2 AS 1735 Part 5 . 74
iv © ISO #### 2025 – All rights reserved
iv
ISO/TR 25471DTR 25741-1:2025(E:(en)
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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of
ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO [had/had not] received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that this
may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents.www.iso.org/patents. ISO shall not be held responsible for identifying any or all such
patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee [or Project Committee] ISO/TC 178, Lifts, escalators and
moving walks.
This first edition of ISO/TR 25741-1, together with ISO/TR 25741-2, cancels and replaces
ISO/TR 25741:2008, which has been technically revised.
A list of all parts in the ISO/TR 25741 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
v
ISO #####-#:####(X/DTR 25741-1:(en)
Introduction
The work on a comparison of world-wide standards which includes the American, Australian, European and
Japanese escalator and moving walk safety code was started in 2016, with the aim to prepare a cross reference
between the relevant sections of these standards and to analyzeanalyse the differences on selected subjects.
The goal at that time was to prepare a document which would provide reference information to assist national
committees when reviewing and revising individual standards, which maycan initiate a gradual convergence
of the technical requirements.
This document is intended to aid standards writers in developing their seismic requirements, and to help
standards users understand the basis for the requirements as they are applied throughout the world.
This document is not intended to replace existing seismic standards which may have possibly been updated.
Conclusions are arrived at in some cases, but only where there is unanimity amongst the various experts. In
other cases, the reasons for the divergent views are expressed.
This document is intended to be read in conjunction with the various seismic standards. The information
contained in this reportdocument does not necessarily represent the opinions of these standards writing
organizations (see bibliographythe Bibliography for references). This document was prepared with EN 81-
77:2018 and EN 115-1: 2017 Annex M. All other codes are not in their normal sequence and logical order.
They are structured differently to EN 81-77:2018 and EN 115-1: 2017 Annex M.
vi © ISO #### 2025 – All rights reserved
vi
ISO/TR 25471DTR 25741-1:2025(E:(en)
Lifts and escalators subject to seismic conditions —
— Compilation report — —
Part 1:
Rule by rule comparison
1 Scope
This document compares the requirements of selected topics as covered by the following seismic standards
(excluding local deviations):
a) EN 81-77:2018 (EU));
b) ASME 17.1 16 CH 8.4 (USA) / CSA B44-16 CH 8.4 (CAN));
c) NZS 4332-1997, NZS1170.5-2004 (NZ));
d) AS 1735.1:2016, AS 1735.5 :2001 (AUS));
e) BSLJ / GFS:2016 (Japan)).
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.
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
4 Rule by rule comparison
4.1 General
This comparison is made between EN 81-77:2018, EN 115-1:2017, Annex M, and the rules in
ASME A17.116/CSA B44-16, AS 1735.1:2016, AS 1735.5 (EN 115:1995), NZS 4332-1997, NZS1170.5-2004
and Japanese Building Codes.
There are other standards, see listed in the Scope, (1), in the countries concerned that have requirements
which are not shown in the escalator/moving walk standards compared, but address some of the same
requirements as EN 81--77 / /EN 115-1:2017, Annex M.
ISO #####-#:####(X/DTR 25741-1:(en)
EN 81-77 / EN 115-1:2017, Annex M clause numbers in brackets serve only as a reference point. They do not
exist in the published version of EN 81-77 / /EN 115-1:2017, Annex M.
2 © ISO #### – All rights reserved
ISO/TR 25471DTR 25741-1:2025(E:(en)
Figure 1 — Figure 1 — Overview of different areas
It should be noted that in addition to the above listed standards and other regulations, escalators and moving
walks may be required to conform to the requirements of other standards as appropriate. Where
ISO/TC 178/WG 6 SG 6 was aware of these standards, they are mentioned in the bibliography.
4.2 Elevators and Liftslifts
Table 1 — Comparison of requirements for elevators and lifts
EN 81-77:2018 ASME 17.1 16 CH 8.4 (USA) / NZS 4332-1997, AS 1735.1:2016, BSLJ / GFS:2016
(EU) CSA B44-16 CH 8.4 (CAN) NZS1170.5-2004, (NZ) AS 1735.5 :2001, (AUS) (Japan)
0 Introduction SECTION 8.4 1.5.1 Structural design No such comparable introduction No such comparable introduction
0.1 General ELEVATOR SEISMIC REQUIREMENTS The structural design of the lift installation
including its various components and the
The machinery concerned and the extent (a) – (d)
building housing the installation are
to which hazards, hazardous situations
outside of the scope of this Standard.
and events are covered, are indicated in
Designs need to be undertaken by a
the scope of this standard.
suitably qualified designer, using
This document is a Type C Standard as
verification methods B1/VM1 and EN 81-
stated in EN ISO 12100.
77 as considered appropriate, with
When provisions of this C standard are
proposals approved by the building
different from those which are stated in
consent authority as part of the building
type A or B standards, the provisions of
consent process. Note: Although this
this Type C standard take precedence
Standard provides some design criteria
over the provisions of the other
and information on the lift installation, it
standards, for machines that have been
does not fully account for all loadings that
designed and built according to the
must be taken into consideration, e.g.
provisions of this Type C standard.
earthquake. The overall structural design
of the lift installation and of its
components is therefore outside of this
scope of this Standard
0.2 General remarks No such comparable introduction No such comparable introduction No such comparable introduction No such comparable introduction
0.2.1 The object of this standard is to
define additional safety rules related to
passenger and goods/passenger- lifts
with
...
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