1、BS ISO15686-8:2008ICS 91.040.01NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDBuildings andconstructed assets Service-life planningPart 8: Reference service life andservice-life estimationThis British Standardwas published under theauthority of the StandardsPol
2、icy and StrategyCommittee on 31 July 2008 BSI 2008ISBN 978 0 580 53688 5Amendments/corrigenda issued since publicationDate CommentsBS ISO 15686-8:2008National forewordThis British Standard is the UK implementation of ISO 15686-8:2008.The UK participation in its preparation was entrusted to Technical
3、Committee B/500, Basic data.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard ca
4、nnot confer immunityfrom legal obligations.BS ISO 15686-8:2008Reference numberISO 15686-8:2008(E)ISO 2008INTERNATIONAL STANDARD ISO15686-8First edition2008-06-15Buildings and constructed assets Service-life planning Part 8: Reference service life and service-life estimation Btiments et biens immobil
5、iers construits Prvision de la dure de vie Partie 8: Dure de vie documente et estimation de la dure de vie BS ISO 15686-8:2008ISO 15686-8:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not
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10、mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2008 All rights reservedBS ISO 15686-8:2008ISO 15686-8:2008(E) ISO 2008 All rights reserved iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Abbreviated terms 3 5 Refe
11、rence service life. 3 5.1 Reference service-life data 3 5.2 Provision of reference service-life data 3 5.3 Selection of data . 5 5.4 Formatting general data as reference service-life data 7 6 Service-life estimation using the factor method . 11 6.1 General. 11 6.2 Factors and factor categories . 12
12、6.3 Application of the factor method 12 6.4 Levels of application 12 6.5 Probability distributions 14 6.6 Format of estimated service life 14 Annex A (normative) Description of the factors and factor categories 16 Annex B (informative) Example of a reference service-life data record . 18 Annex C (in
13、formative) Worked examples of service-life estimation using the factor method. 22 Annex D (informative) Worked examples of service-life estimation using the factor method in conjunction with statistical methods 27 Annex E (informative) Remarks on the factor method . 35 Bibliography . 36 BS ISO 15686
14、-8:2008ISO 15686-8:2008(E) iv ISO 2008 All rights reservedForeword 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 committe
15、es. 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 Inte
16、rnational Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International S
17、tandards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the su
18、bject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 15686-8 was prepared by Technical Committee ISO/TC 59, Building construction, Subcommittee SC 14, Design life. ISO 15686 consists of the following parts, under the general title Buildings and
19、 constructed assets Service-life planning: Part 1: General principles Part 2: Service life prediction procedures Part 3: Performance audits and reviews Part 5: Life-cycle costing Part 6: Procedures for considering environmental impacts Part 7: Performance evaluation for feedback of service-life data
20、 from practice Part 8: Reference service life and service-life estimation The following parts are in preparation: Part 9: Guidance on assessment of service-life data Part 10: Levels of functional requirements and levels of serviceability Principles, measurement and use BS ISO 15686-8:2008ISO 15686-8
21、:2008(E) ISO 2008 All rights reserved vIntroduction Typically, a person working with service-life planning of a design object is faced with the problem of estimating the service life of its components. Even if there are certain reference service life (RSL) data of a component available from various
22、actual sources, such RSL data, as found, can rarely be used satisfactorily. This is because the in-use conditions specific to the design object usually are different from the reference in-use conditions, i.e. the in-use conditions under which the RSL data are valid. Accordingly, in order to determin
23、e an appropriate estimated service life (ESL), it is necessary to modify the RSL by taking into account the differences between the object-specific in-use conditions and the reference in-use conditions. The factor method described in this part of ISO 15686 provides one systematic way of carrying out
24、 such a modification. It is necessary that any possible alternative method of determining the ESL from the RSL also be based on similar information on in-use conditions. When applying the factor method, basically an ESL is estimated by multiplying an RSL value by a modifying number representing a co
25、mbination of factor categories, each of which reflects a particular difference between the object-specific and reference in-use conditions. Several strategies at various levels of sophistication to determine this modifying number are described herein. Beyond the knowledge of the RSL itself, it is ne
26、cessary to have available detailed information of the reference in-use conditions as well as the object-specific in-use conditions in order to apply the factor method and allow an estimation of the modification. It is necessary that the reference in-use conditions be provided together with the RSL,
27、while the object-specific in-use conditions are determined from the knowledge of the design object and the location of the site. An RSL and the appurtenant reference in-use conditions, together with additional required or useful information concerning the RSL, form a set of RSL data. It is necessary
28、 that a set of RSL data be formatted into an RSL data record. This part of ISO 15686 provides guidance on RSL issues and a means of determining the ESL through application of the factor method. The guidance for reference service life is structured into discussions regarding provision of RSL data uti
29、lizing existing general data (see 5.2); selection of RSL data or general data (see 5.3); formatting of general data into RSL data records (see 5.4). Manufacturers of building and construction products are usually in possession of considerable knowledge concerning the service life and durability of t
30、heir products. However, such information is only occasionally made public, typically in product declarations, other documents, company websites and/or databases. Use of this part of ISO 15686 is expected to motivate manufacturers to compile their knowledge and provide service-life data following the
31、 guidelines and requirements stated. BS ISO 15686-8:2008BS ISO 15686-8:2008INTERNATIONAL STANDARD ISO 15686-8:2008(E) ISO 2008 All rights reserved 1Buildings and constructed assets Service-life planning Part 8: Reference service life and service-life estimation 1 Scope This part of ISO 15686 provide
32、s guidance on the provision, selection and formatting of reference service-life data and on the application of these data for the purposes of calculating estimated service life using the factor method. This part of ISO 15686 does not give guidance on how to estimate the modification part or the valu
33、es of factors A to G, using given reference in-use conditions and the object-specific in-use conditions. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the
34、 latest edition of the referenced document (including any amendments) applies. ISO 6707-1, Building and civil engineering Vocabulary Part 1: General terms ISO 15686-1:2000, Buildings and constructed assets Service life planning Part 1: General principles ISO 15686-2:2001, Buildings and constructed a
35、ssets Service life planning Part 2: Service-life prediction procedures 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 6707-1, ISO 15686-1 and ISO 15686-2 and the following apply. 3.1 data record set of reference service-life data (3.8) compiled into
36、 a prescribed format 3.2 factor category category of in-use conditions (3.5) that are considered in the determination of an ESL from an RSL EXAMPLE 1 Inherent performance level, design level, work execution level, indoor environment, outdoor environment, usage conditions and maintenance level EXAMPL
37、E 2 In-use conditions, such as temperature and moisture level, can be considered under the factor category, outdoor environment, in determining factor E. NOTE Factor categories are used in the factor method to determine the factors A to G, and can be applicable in a similar way in any feasible alter
38、native method. BS ISO 15686-8:2008ISO 15686-8:2008(E) 2 ISO 2008 All rights reserved3.3 general data data of any format related to service life, as opposed to reference service-life data (3.8) 3.4 degradation process whereby an action on an item causes a deterioration of one or more properties NOTE
39、Properties affected may be, for example, physical, mechanical or electrical. 3.5 in-use condition any circumstance that can impact the performance of a building or a constructed asset, or a part thereof under normal use NOTE In order to encompass all of the seven factors and their related factor cat
40、egories (3.2), this definition is an extended version of the definition given in ISO 15686-2:2001, 3.3.5 (thus being in accordance with ISO 15686-1:2000, 3.1.2, where “in-use condition” is referred to as influencing any of the seven factors of the factor method). 3.6 in-use condition grading act of
41、applying collective judgment of all qualitative information of an in-use condition (3.5) within a factor category (3.2) 3.7 in-use condition grade designation representing a qualitative description of an in-use condition (3.5) NOTE 1 An in-use condition grade is the outcome of the in-use condition g
42、rading (3.6). NOTE 2 In-use condition grades are designated qualitatively in terms of not available, very high/very mild, high/mild, normal, low/severe, very low/very severe and not applicable. NOTE 3 In-use condition grades are designated numerically using numbers in the range from 0 to 5, with 3 r
43、epresenting a “normal” condition. 3.8 reference service-life data RSL data information that includes the reference service life and any qualitative or quantitative data describing the validity of the reference service life EXAMPLE Typical data describing the validity of the RSL include the descripti
44、on of the component for which they apply, the reference in-use condition(s) (3.9) under which they apply, and their quality. NOTE 1 The RSL data are reported in a data record (3.1). NOTE 2 “Service life” and “reference service life” will be defined in the future ISO 15686-9. 3.9 reference in-use con
45、dition in-use condition (3.5) under which the RSL data (3.8) are valid NOTE The reference in-use conditions can be based upon information gathered through testing or from recorded performance and actual service-life data of a component. 3.10 usage condition factor category (3.2) of in-use conditions
46、 (3.5) that considers the influence on performance due to the use of a building/constructed asset or any human activity adjacent to a building/constructed asset BS ISO 15686-8:2008ISO 15686-8:2008(E) ISO 2008 All rights reserved 3NOTE In this part of ISO 15686, the factor category (3.2) relating to
47、factor F is designated “usage conditions” rather than “in-use condition” as used elsewhere in order to distinguish the factor category from the concept “in-use condition”. 4 Abbreviated terms DL design life ESL estimated service life RSL reference service life UV ultra-violet 5 Reference service-lif
48、e 5.1 Reference service-life data It is generally necessary to determine an ESL for a design object by modifying some form of RSL applicable to such a design object. Since the RSL is normally generated under conditions different from the in-use conditions to which the design object is subjected, i.e
49、. the object-specific in-use conditions, it is essential to provide as much information as possible on the conditions under which the RSL is generated. Therefore, jointly with the RSL, the reference in-use conditions should, as far as possible, be included when providing RSL data. NOTE 1 The discussion on factor categories provides guidance on where and when information of in-use conditions should be provided. RSL data are formatted into an RSL data record that contains the RSL value and the appurt
