ISO 15686-7:2017

INTERNATIONAL ISO
STANDARD 15686-7
Second edition
2017-04
Buildings and constructed assets —
Service life planning —
Part 7:
Performance evaluation for feedback
of service life data from practice
Bâtiments et biens immobiliers construits — Prévision de la durée
de vie —
Partie 7: Évaluation de la performance de l’information en retour
relative à la durée de vie, issue de la pratique
Reference number
©
ISO 2017
© ISO 2017, Published in Switzerland
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ii © ISO 2017 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Methodological framework . 3
4.1 Service life planning . 3
4.2 Performance assessment of service life in the course of the construction life cycle . 4
4.2.1 Relation to service life design and reference service life (RSL) . 4
4.2.2 Life cycle performance of construction . 5
5 Performance surveys . 7
5.1 General . 7
5.2 Registration level and user-oriented types of inspection . 8
5.3 Phases and activities in the performance survey . 9
5.3.1 General overview . 9
5.3.2 Defining the task .10
5.3.3 Planning .11
5.3.4 Examination .12
5.3.5 Evaluation .14
5.3.6 Reporting .17
Annex A (informative) Guidance on Factor E — Environmental classification systems and
methods for assessment in microenvironments .19
Annex B (informative) Prediction of (residual) service life on the object (single building)
level and on the network level (population of buildings) .24
Annex C (informative) Prediction of the performance development over time by Markov Chain .25
Annex D (informative) Worked example of RSL data records from “Inspection of buildings” .30
Bibliography .33
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
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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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
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constitute an endorsement.
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expressions related to conformity assessment, as well as information about ISO’s adherence to the
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URL: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by ISO Technical Committee ISO/TC 59, Buildings and civil engineering
works, Subcommittee SC 14, Design life.
This second edition cancels and replaces the first edition (ISO 15686-7:2006), which has been
technically revised.
A list of all the parts in the ISO 15686 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved

Introduction
The ISO 15686 series, including this document, is an important contribution to the development of a
policy for design life. A major impetus for the preparation of the ISO 15686 series is the concern over
the inability to predict service life, costs of ownership and maintenance of buildings and constructed
assets. Common methods and standards for performance assessment and proper feedback of data from
practice are decisive in order to make experience data from the building stock more consistent and
comparable.
This document provides a framework to channel information, collected as part of building performance
surveys and assessments, into structured data that can be used in various aspects of the service life
planning process.
By applying the generic protocol and terms from this document, to evaluate the service life performance
during a building’s life cycle, practitioners can generate “in-use” service life data, as referenced in
ISO 15686-2 and ISO 15686-8.
The inspection and reporting procedures described in this document, acknowledge that both the
condition, of any given building, component or system, as well as performance requirements, can
change during the lifecycle. Those changes typically result in corrective actions, maintenance or
re-commissioning, to rectify the performance gaps. While commissioning, re-commissioning and
maintenance planning are beyond the consideration of this document, the interactions and significance
of initial inspection data, maintenance-driven inspections, changed performance expectations,
performance surveys, service life predictions and service life planning are discussed.
ISO 15686-10 stipulates that functional performance is to be assessed at various stages during the whole
life, most critically during the project delivery phase, and at commissioning. Functional performance
assessments are to continue during the property management phase and when considering disposal, to
compare actual serviceability profile of the facility to the generic or typical functional requirement profile
of potential occupants or buyers. This document provides essential input to the functional performance
review process of ISO 15686-10 and as such is of importance to all members of the building team.
ISO 15686-4 lays out procedures for the application of Building Information Modelling (BIM),
specifically to provide a consistent computerized structure for the retention and use of service life
planning information and service life predictions. Coupled with the emergence and inherent capabilities
of BIM, the techniques described in this document will become more useful, lead to better service life
estimations and generally improve service life planning.
This document is intended for all members of a building team, e.g. building owners and developers,
professional advisors, constructors, assessors, manufacturers of building products, insurers, managers
of both publicly and privately owned constructed assets.
INTERNATIONAL STANDARD ISO 15686-7:2017(E)
Buildings and constructed assets — Service life planning —
Part 7:
Performance evaluation for feedback of service life data
from practice
1 Scope
This document provides a generic basis for performance evaluation for feedback of service life data
from existing buildings and constructed assets, including a definition of the terms to be used and
the description of how the (technical) performance can be described and documented to ensure
consistencies.
The purpose of this document is to describe the principles for service life performance surveys and
evaluation with an emphasis on technical recommendations. It describes a generic methodology,
including the terms to be used, that provides guidance on the planning, documentation and inspection
phases, as well as on analysis and interpretation of performance evaluations, both on the object (single
building) and network (stock of buildings) level. While maintenance planning is outside the scope of
this document, maintenance-driven inspections and subsequent recommended actions could have
significant effects upon service life and performance.
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 15686-1:2011, Buildings and constructed assets — Service life planning — Part 1: General principles
and framework
ISO 15686-2:2012, Buildings and constructed assets — Service life planning — Part 2: Service life prediction
procedures
ISO 15686-8:2008, Buildings and constructed assets — Service-life planning — Part 8: Reference service
life and service-life estimation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 15686-1 and ISO 15686-2 and
the following apply.
ISO and IEC maintain terminological 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
commissioning
systematic process of functional performance testing, verification, documentation and training
intended to ensure that the building and its systems operate in accordance with the defined objectives
and criteria of the project
Note 1 to entry: Commissioning is an integral part of the design and construction process and is also intended to
be undertaken throughout the service life.
3.2
consequence degree
expression of the significance and impact(s) of failure, or failures, or loss of performance, relative to a
defined reference level
Note 1 to entry: Impacts that should be considered include any changes to aesthetics, structural integrity, the
provision of healthy and safe surroundings, economic factors and environmental loadings.
3.3
network level
stock of objects under management and maintenance of an owner
Note 1 to entry: Objects could include facilities, for example, bridges, tunnels, power plants, and buildings.
3.4
object level
basic unit of the network serving a specific function
3.5
performance survey
total review (defining of the task, planning, ex
...