ISO 2631-2:2026

Mechanical vibration and shock — Evaluation of human exposure to whole-body vibration — Part 2: Vibration in buildings (1 Hz to 80 Hz)

This document concerns human exposure to whole-body vibration and shock in buildings with respect to the comfort and annoyance of the occupants based on both measurements and simulations. It specifies a method for measurement and evaluation, comprising the determination of the measurement direction and measurement location. It defines the frequency weighting, Wm, which is applicable in the frequency range 1 Hz to 80 Hz where the posture of an occupant does not need to be defined, see Annex A. NOTE 1 The frequency weightings given in ISO 2631-1 can be used if the posture of the occupant is defined. Whilst it is often the case that a building will be available for experimental investigation, many of the concepts contained within this document would apply equally to a building in the design process or where it will not be possible to gain access to an existing building. In these cases, reliance will have to be placed on the prediction of the building response by some means. This document does not provide guidance on the likelihood of structural damage, which is discussed in ISO 4866. Further, it is not applicable to the evaluation of effects on human health and safety. Acceptable magnitudes of vibration are not stated in this document, but guidance is provided in Annex C in the form of exposure-response curves for the estimation of annoyance when vibration originates from various sources, including railway, construction activities and blasting. NOTE 2 The exposure-response curves are based on the most recent evidence which suggests that human response to vibration in buildings is dependent on the magnitude, frequency, duration and temporal characteristics of the vibration[4]. In addition, it is known that other factors not directly related to the vibration characteristics have a significant influence on the annoyance response. These are identified in Annex B and include consideration of some parallel effects, subjective impressions and socio-demographic factors which need to be accounted for when collecting vibration data. NOTE 3 Several national standards have been proposed to define methods for assessing exposure to vibration in buildings as well as reference values for judging the annoyance resulting from exposure. These standards generally present significant differences in terms of metrics and methods used to quantify exposure as well as on the guideline values to prevent adverse effects. Some standards define limit values that are based on experimental field data leading to exposure-response relationships such as those proposed in Annex C. Other standards base their limit values on estimations that take into account vibration perception thresholds and situational factors. Some standards also consider the magnitude of vibration that can present a risk of damage to the buildings, particularly when blasting is involved.

Vibrations et chocs mécaniques — Évaluation de l'exposition des individus à des vibrations globales du corps — Partie 2: Vibrations dans les bâtiments (1 Hz à 80 Hz)

L'ISO 2631-2:2002 est applicable à l'exposition des individus à des vibrations globales du corps et à des chocs dans les bâtiments, du point de vue du confort et de la gêne. Elle spécifie une méthode de mesure et d'évaluation, comprenant la détermination de la direction de mesurage et l'emplacement de mesurage. Elle définit la pondération en fréquence, Wm, applicable dans la gamme de fréquence comprise entre 1 Hz et 80 Hz dans laquelle la posture des occupants n'a pas besoin d'être définie. Même s'il arrive souvent qu'un bâtiment soit disponible pour une étude expérimentale, plusieurs des concepts évoqués dans l'ISO 2631-2 s'appliquent également à un bâtiment en construction ou dans le cas où il est impossible d'accéder à un bâtiment existant. Dans de tels cas, il sera nécessaire de se fier d'une manière ou d'une autre à la prévision de la réponse du bâtiment. L'ISO 2631-2 ne fournit aucune recommandation sur la probabilité de dégâts structurels, discutée dans l'ISO 4866. De plus, elle n'est pas applicable à l'évaluation des effets induits sur la santé des individus et sur la sécurité. L'ISO 2631-2 n'indique pas d'amplitudes acceptables des vibrations. La définition mathématique de la pondération en fréquence, Wm, est donnée dans l'Annexe A. Des recommandations pour le recueil de données relatives à la réponse humaine aux vibrations du bâtiment sont données dans l'Annexe B.

General Information

• Status: Published
• Publication Date: 24-Jun-2026
• ICS: 13.160 - Vibration and shock with respect to human beings
• Technical Committee: ISO/TC 108/SC 4 - Human exposure to mechanical vibration and shock
• Drafting Committee: ISO/TC 108/SC 4/WG 13 - Evaluation of human exposure to whole-body vibration
• Current Stage: 6060 - International Standard published
• Start Date: 25-Jun-2026
• Due Date: 27-Sep-2026
• Completion Date: 25-Jun-2026

Relations

• Revises: ISO 2631-2:2003 - Mechanical vibration and shock — Evaluation of human exposure to whole-body vibration — Part 2: Vibration in buildings (1 Hz to 80 Hz)
• Effective Date: 28-Oct-2023

Overview

ISO 2631-2: Mechanical Vibration and Shock – Evaluation of Human Exposure to Whole-Body Vibration – Part 2: Vibration in Buildings (1 Hz to 80 Hz) is an international standard developed by the International Organization for Standardization (ISO). This standard focuses on assessing human exposure to whole-body vibration and shock in buildings, with particular attention to the comfort and annoyance experienced by occupants. It establishes methodologies for the measurement, evaluation, and reporting of building vibrations in the 1 Hz to 80 Hz frequency range. The provisions are applicable whether a building is under investigation or still in the design stage. The standard does not cover structural damage risks or health effects, focusing instead on occupant comfort.

Key Topics

• Human Exposure and Comfort Assessment
  The standard addresses methods for evaluating how whole-body vibration from various sources-such as railways, construction activities, or blasting-affects people in buildings, with a primary focus on comfort and annoyance.

• Measurement Methods
  ISO 2631-2 prescribes:

  • Simultaneous vibration measurement in three orthogonal directions (X, Y, Z) related to building axes.
  • Selection of measurement locations based on expected occupant activities and points of highest vibration.
  • Recommendations on measuring instrumentation, referencing ISO 8041-1 for technical requirements.

• Frequency Weighting (Wm)

  • Defines the application of frequency weighting Wm for the 1 Hz to 80 Hz range, regardless of occupant posture.
  • Wm ensures a standardized evaluation regardless of the specific nature of the vibration source.

• Evaluation and Categorization of Sources
  Vibration sources are classified as:

  • Permanent continuous (e.g., industrial machinery)
  • Permanent intermittent (e.g., traffic)
  • Temporary activities (e.g., construction work)
  • Isolated events (e.g., blasting)

• Exposure-Response Relationships
  Annex C provides exposure-response curves for estimating annoyance based on vibration magnitude and event characteristics, addressing key sources like railway and construction activities.

Applications

• Building Design and Assessment
  Architects, engineers, and developers use ISO 2631-2 during the design or testing of buildings to ensure occupant comfort by predicting or measuring whole-body vibration levels.

• Vibration Mitigation
  Facility managers and urban planners can identify sources of disturbing vibrations in existing buildings and apply mitigation strategies based on standard measurement and evaluation methods.

• Complaint Investigation
  The standard provides guidance (see Annex B) for systematically collecting data when investigating occupant complaints about vibration, including associated phenomena such as noise, rattling, or movement of objects.

• Regulatory and Community Planning
  Regulatory bodies reference ISO 2631-2 for setting guidelines and community vibration policies to enhance residential and workplace comfort.

Related Standards

• ISO 2631-1: Mechanical Vibration and Shock – Evaluation of Human Exposure to Whole-Body Vibration – Part 1: General Requirements
  Provides the principal framework for evaluating whole-body vibration across various applications, including postural considerations.

• ISO 8041-1: Human Response to Vibration – Measuring Instrumentation – Part 1: General Purpose Vibration Meters
  Specifies the calibration and performance criteria for instrumentation used in vibration measurement.

• ISO 4866: Mechanical Vibration and Shock – Vibration of Fixed Structures – Guidelines for the Measurement of Vibrations and Evaluation of their Effects on Structures
  Focuses on assessing the risk of structural damage due to vibration, which is outside the scope of ISO 2631-2.

Keywords: ISO 2631-2, building vibration, whole-body vibration, human comfort, vibration measurement, vibration annoyance, frequency weighting, Wm, occupant exposure, vibration standards, structural vibration, ISO standards.

By following ISO 2631-2, professionals can ensure a consistent and scientifically grounded approach to the measurement and evaluation of whole-body vibration in buildings, ultimately protecting occupant comfort and supporting quality assurance in building environments.

Standards Content (Sample)

International
Standard
ISO 2631-2
Third edition
Mechanical vibration and shock —
2026-06
Evaluation of human exposure to
whole-body vibration —
Part 2:
Vibration in buildings (1 Hz to 80
Hz)
Vibrations et chocs mécaniques — Évaluation de l'exposition des
individus à des vibrations globales du corps —
Partie 2: Vibrations dans les bâtiments (1 Hz à 80 Hz)
Reference number
© ISO 2026
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Measurement of building vibration . 2
4.1 General .2
4.2 Direction of measurement .3
4.3 Location of measurement .3
4.4 Frequency weighting.3
4.5 Evaluation of vibration .3
4.5.1 Vibration measurement .3
4.5.2 Categories of source .3
4.6 Measuring instrumentation .4
5 Human responses to building vibration . 4
Annex A (normative) Mathematical definition of the frequency weighting, .
Annex B (informative) Guidelines for collecting data concerning human response to building
vibration . 8
Annex C (informative) Exposure-response relationships for the estimation of annoyance inside
buildings .11
Bibliography .20

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 108, Mechanical vibration, shock and condition
monitoring, Subcommittee SC 4, Human exposure to mechanical vibration and shock.
This third edition cancels and replaces the second edition (ISO 2631-2:2003), which has been technically
revised.
The main changes are as follows:
— inclusion of blasting as one of the sources of vibration being considered as part of this document;
— inclusion of a new Annex C presenting some exposure-response relationships representing estimates of
community annoyance applicable for sources of vibration including railway-, construction- and blast-
induced vibration.
A list of all parts in the ISO 2631 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
Structural vibration to which human beings are exposed in buildings can be detected by the occupants and
[1][2]
can affect them in many ways. More particularly, their comfort and quality of life can be reduced .
For the evaluation of vibration in buildings with respect to comfort and annoyance, frequency weighted
values of the vibration are preferred, except when blasting is involved. The values obtained characterize the
place or site within the building where people may be present, by giving an indication of the suitability of
that place.
This document is intended to encourage the uniform collection of data on human response to building
vibration.
v
International Standard ISO 2631-2:2026(en)
Mechanical vibration and shock — Evaluation of human
exposure to whole-body vibration —
Part 2:
Vibration in buildings (1 Hz to 80 Hz)
1 Scope
This document concerns human exposure to whole-body vibration and shock in buildings with respect to
the comfort and annoyance of the occupants based on both measurements and simulations. It specifies a
method for measurement and evaluation, comprising the determination of the measurement direction and
measurement location. It defines the frequency weighting, W , which is applicable in the frequency range
m
1 Hz to 80 Hz where the posture of an occupant does not need to be defined, see Annex A.
NOTE 1 The frequency weightings given in ISO 2631-1 can be used if the posture of the occupant is defined.
Whilst it is often the case that a building will be available for experimental investigation, many of the
concepts contained within this document would apply equally to a building in the design process or where
it will not be possible to gain access to an existing building. In these cases, reliance will have to be placed on
the prediction of the building response by some means.
This document does not provide guidance on the likelihood of structural damage, which is discussed in
[3]
ISO 4866 . Further, it is not applicable to the evaluation of effects on human health and safety.
Acceptable magnitudes of vibration are not stated in this document, but guidance is provided in Annex C
in the form of exposure-response curves for the estimation of annoyance when vibration originates from
various sources, including railway, construction activities and blasting.
NOTE 2 The exposure-response curves are based on the most recent evidence which suggests that human response
to vibration in buildings is dependent on the magnitude, frequency, duration and temporal characteristics of the
[4]
vibration . In addition, it is known that other factors not directly related to the vibration characteristics have a
significant influence on the annoyance response. These are identified in Annex B and include consideration of some
parallel effects, subjective impressions and socio-demographic factors which need to be accounted for when collecting
vibration data.
NOTE 3 Several national standards have been proposed to define methods for assessing exposure to vibration in
buildings as well as reference values for judging the annoyance resulting from exposure. These standards generally
present significant differences in terms of metrics and methods used to quantify exposure as well as on the guideline
values to prevent adverse effects. Some standards define limit values that are based on experimental field data leading
to exposure-response relationships such as those proposed in Annex C. Other standards base their limit values on
estimations that take into account vibration perception thresholds and situational factors. Some standards also
consider the magnitude of vibration that can present a risk of damage to the buildings, particularly when blasting is
involved.
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.
ISO 2631-1, Mechanical vibration and shock — Evaluation of human exposure to whole-body vibration — Part 1:
General requirements
ISO 8041-1, Human response to vibration — Measuring instrumentation — Part 1: General purpose vibration
meters
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
3.1
evaluation
range of activities which includes survey, measurement, processing, ordering, characterization, rating,
response simulation and presentation of relevant data
3.2
building
civil engineering structure used for habitation or allocated to any other human activity, including offices,
factories, hospitals, schools, day-care centres
3.3
work time
period of activity, or working hours, of the vibration source defined by the daily start and finish times
3.4
exposure time
period during which exposure to the vibration occurs
3.5
peak particle velocity
PPV
maximum value of the velocity associated with the motion of a particle at a point in the ground or on the
structure being considered and determined from the measured unweighted velocity time signal during an
event
3.6
running rms velocity
root-mean-square of velocity data calculated over a specified time window, tracking the signal's energy
fluctuation over successive periods equivalent to the length of the time window
Note 1 to entry: The time constant refers to the speed of response of the signal. It can either be slow (1 s) or fast
(0,125 s).
Note 2 to entry: The maximum running rms velocity represents the highest magnitude from values measured over
successive periods equivalent to the time window.
4 Measurement of building vibration
4.1 General
The general requirements for signal conditioning and the duration of measurement as specified in ISO 2631-1
shall be followed.
4.2 Direction of measurement
The vibration shall be measured in all three orthogonal directions simultaneously. For this purpose, the
directions of vibration are related to the building structure rather than to the human body. The orientations
of the building structure-related x-, y- and z-axes shall be those for a standing person as given in ISO 2631-1 .
4.3 Location of measurement
The evaluation with respect to human response shall be based solely on the expected occupation, the tasks
performed by the occupants, and the expected freedom from disturbance. Each relevant place or room shall
be assessed with respect to these criteria. The vibration to be reported shall be measured at that location in
the room where the highest magnitude of the weighted vibration is expected, or as specifically directed for
the source concerned, on a suitable surface of the building structure or on a rigid surface near the foundation
when the vibration originates from blasting.
NOTE Although the highest magnitude of vibration is often expected to occur at the centre of the room,
measurements at several locations in the building are encouraged to determine the local variation of the vibration.
4.4 Frequency weighting
The vibration measured inside the building at the relevant location and in the three directions according
to 4.2 and 4.3 shall be frequency weighted. This document (as well as ISO 2631-1) uses frequency-weighted
root-mean-square acceleration and vibration dose value to express the exposure to vibration originating
from sources such as railway, traffic and construction activities.
The frequency weighting, , according to Annex A shall be used irrespectively of the measurement
direction.
NOTE The frequency weightings given in ISO 2631-1 can be used if the posture of the occupant is defined.
Annex A gives the exact definition of the frequency weighting, . The values given in Table A.1, applicable
to vibration acceleration as the input quantity, are calculated using the true one-third-octave band mid-
frequencies and include the band limitation between 1 Hz and 80 Hz. Figure A.1 shows the frequency
weighting, , in a graphical way.
Vibration originating from blasting and measured near the foundation of the building does not require to be
[5]
frequency weighted, see BS 6472-2 .
4.5 Evaluation of vibration
4.5.1 Vibration measurement
Vibration values measured inside the building shall be determined by application of the methods given in
ISO 2631-1. The vibration axis with the highest frequency-weighted vibration magnitude expressed as rms
acceleration and/or vibration dose value shall be identified, and values obtained in this direction used for
the evaluation.
For vibration originating from blasting operations, the measurements shall be carried out in the ground
near the foundations of the building on a hard surface or on the building. The unweighted peak particle
velocity (PPV) should be measured in three perpendicular directions and, only the dominant directional
component retained to assess the exposure.
In order to allow different kinds of future evaluation, it is recommended, wherever practicable, to use a
measurement technique which records vibration time histories unweighted at least within the frequency
range 1 Hz to 80 Hz.
4.5.2 Categories of source
For an evaluation, it is useful to categorize the vibration according to the major types of source which have
been found in practice to give rise to adverse comments. Different magnitudes of vibration may be acceptable

for the different categories. To establish international consistency of approach, the following categories are
defined:
a) permanent continuous processes, e.g. industry;
b) permanent intermittent activities, e.g. traffic, railway;
c) temporary (non-permanent) activities, e.g. construction;
d) isolated events, e.g. blasting.
The categories have been selected to reflect the human perception of different vibration sources. They are
not intended to be exclusive but to give guidance for the application of this document.
4.6 Measuring instrumentation
The requirements for measuring instrumentation, including tolerances, as given in ISO 8041-1 shall be
followed.
5 Human responses to building vibration
Experience from various countries has shown that occupants of residential buildings can express adverse
comments regarding building vibration when the vibration magnitudes slightly exceed the perception
levels (see ISO 2631-1 for the definition of perception levels). Complaints can also arise due to parallel
secondary effects associated with vibration, such as re-radiated noise (see Annex B). In general, satisfactory
magnitudes are likely to be related to general expectations and to economic, social and environmental
factors. They are not determined by short-term health hazards. This is due to very low magnitudes of typical
building vibration relative to those which can cause health effects. Only in extremely rare cases should it be
necessary to refer to the criterion “health” as given in ISO 2631-1.
Tolerance to higher magnitudes of building vibration could arise in situations involving temporary
disturbances and isolated events such as during construction projects or blasting. Any startle factor can be
reduced by a proper public relations program which can include announcements or the emission of warning
signals prior to the vibration events. When vibration occurs over an extended period of time, long-term
familiarization can lead to tolerance of higher magnitudes of building vibration, thus to the perception of a
lower degree of annoyance.
Annex A
(normative)
Mathematical definition of the frequency weighting,
The frequencies, , (i = 1 to 3) are parameters of the transfer function determining the overall frequency
weighting, . The transfer function, , is expressed as the product of three factors [high-pass filter,
, low-pass filter, , and pure weighting function, ], as follows, where π and π :
Band limiting (filter with second-order Butterworth characteristic; and are the corner frequencies):
a) High pass
(A.1)
(A.2)
where
b) Low pass
(A.3)
(A.4)
where
Pure frequency weighting (for acceleration as the input quantity):
(A.5)
(A.6)
where
π
The transfer function, , of the band-limited frequency weighting, , is given by the product of the
high-pass filter, , the low-pass filter, , and the pure weighting function, :
(A.7)
NOTE In the most common interpretation of Formula (A.7) (in the frequency domain) it describes the modulus
(magnitude) and phase in the form of a complex number as a function of the imaginary angular frequency π .
Sometimes the symbol is used instead of p. Alternatively p can be interpreted as the variable of the Laplace transform.
The modulus (magnitude), , is shown in a graphical way in Figure A.1 for illustration.

Values of the frequency weighting, , in one-third-octave bands, calculated using the true mid-frequencies,
frequency band limitation 1 Hz to 80 Hz included, are given in Table A.1 for acceleration as the input quantity.
Key
X frequency, in Hz
Y frequency weighting, in dB
Figure A.1 — Frequency weighting, , with acceleration as the input quantity
Table A.1 — Values of the frequency weighting, , for acceleration as the input quantity (in one-
third-octave bands, calculated using the true mid-frequencies, band limitation 1 Hz to 80 Hz
included)
Frequency
Hz
Nominal True Factor dB
-10 0,1 0,1 0,015 8 -36,00
-9 0,125 0,125 9 0,025 1 -32,00
-8 0,16 0,158 5 0,039 8 -28,01
-7 0,2 0,199 5 0,062 9 -24,02
-6 0,25 0,251 2 0,099 4 -20,05
-5 0,315 0,316 2 0,156 -16,12
-4 0,4 0,398 1 0,243 -12,29
-3 0,5 0,501 2 0,368 -8,67
-2 0,63 0,631 0 0,530 -5,51
-1 0,8 0,794 3 0,700 -3,09
0 1 1,000 0,833 -1,59
1 1,25 1,259 0,907 -0,85
[6]
is the frequency band number according to IEC 61260-1:2014 .

TTabablele A A.11 ((ccoonnttiinnueuedd))
Frequency
Hz
Nominal True Factor dB
2 1,6 1,585 0,934 -0,59
3 2 1,995 0,932 -0,61
4 2,5 2,512 0,910 -0,82
5 3,15 3,162 0,872 -1,19
6 4 3,981 0,818 -1,74
7 5 5,012 0,750 -2,50
8 6,3 6,310 0,669 -3,49
9 8 7,943 0,582 -4,70
10 10 10,00 0,494 -6,12
11 12,5 12,59 0,411 -7,71
12 16 15,85 0,337 -9,44
13 20 19,95 0,274 -11,25
14 25 25,12 0,220 -13,14
15 31,5 31,62 0,176 -15,09
16 40 39,81 0,140 -17,10
17 50 50,12 0,109 -19,23
18 63 63,10 0,083 4 -21,58
19 80 79,43 0,060 4 -24,38
20 100 100,0 0,040 1 -27,93
21 125 125,9 0,024 1 -32,37
22 160 158,5 0,013 3 -37,55
23 200 199,5 0,006 94 -43,18
24 250 251,2 0,003 54 -49,02
25 315 316,2 0,001 79 -54,95
26 400 398,1 0,000 899 -60,92
[6]
is the frequency band number according to IEC 61260-1:2014 .

Annex B
(informative)
Guidelines for collecting data concerning human response to building
vibration
B.1 Overview
The basic human response to vibration in buildings is adverse comment. The main body of this document
concerns the measurement and the evaluation of whole-body vibration. This annex is intended to encourage
users to collect data taking into consideration all of those parameters that affect human beings in buildings
and which give rise to complaints.
[7][8][9]
Human response to vibration in buildings is very complex . In many circumstances the degree of
annoyance and complaint cannot be explained directly by the magnitude of monitored vibration alone.
Under some conditions of amplitude and frequency of vibration, claims may arise while measured whole-
body vibration is lower than the perception level.
Analysis of these complaints shows that other parameters related to the vibration source (e.g. work time )
or produced by the vibration in the exposure area (e.g. re-radiated noise) may also give an explanation of the
complaints.
Measured vibration parameters, complemented by the evaluation of these phenomena, allow better
quantification of the degree of annoyance by vibration in buildings.
Vibration sources outside and inside buildings may generate whole-body vibration, together with the
associated phenomena of structure-borne noise, airborne noise, rattling, movement of furniture and other
objects, as well as visual effects (e.g. movement of hanging objects). To evaluate human complaints, all of
these effects should be considered.
The aim of collecting data for these associated phenomena is to facilitate the eventual definition of a more
general indicator of the annoyance due to vibration. This indicator may be used as the basis to update future
editions of this document.
B.2 Parameters to be considered
B.2.1 General
The following factors should be considered and recorded, where appropriate.
B.2.2 Parameters related to the source
The d
...