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1、 Reference number ISO 15928-1:2003(E) ISO 2003 INTERNATIONAL STANDARD ISO 15928-1 First edition 2003-12-01 Houses Description of performance Part 1: Structural safety Constructions dhabitation Description des performances Partie 1: Scurit de la structure ISO 15928-1:2003(E) PDF disclaimer This PDF f
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6、O copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2003 All rights reserved ISO 15928-1:2003(E) ISO 2003 All rights reserved iii Contents Page Forewordiv Introduction v 1 Scope1 2 N
7、ormative references .1 3 Terms and definitions.1 4 Structural safety performance.2 4.1 User needs.2 4.2 Performance description2 4.3 Principles for describing structural safety performance3 5 Parameters for the description of performance.3 5.1 Parameters for describing actions3 5.2 Parameters for de
8、scribing structural resistance.4 6 Evaluation5 6.1 General.5 6.2 Analysis5 6.3 Testing5 6.4 Service experience5 6.5 Combination 5 Annex A (informative) Commentary .6 Annex B (informative) Structural safety performance checklist13 Bibliography .16 ISO 15928-1:2003(E) iv ISO 2003 All rights reserved F
9、oreword 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 te
10、chnical 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
11、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 Standards adopted by the technical committees are circulated
12、 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 subject of patent rights. ISO shall not be held responsible f
13、or identifying any or all such patent rights. ISO 15928-1 was prepared by Technical Committee ISO/TC 59, Building construction, Subcommittee SC 15, Performance criteria for single family attached and detached dwellings. ISO 15928 consists of the following parts, under the general title Houses Descri
14、ption of performance: Part 1: Structural safety Further parts are in preparation. ISO 15928-1:2003(E) ISO 2003 All rights reserved v Introduction The objective of the ISO 15928 series of standards is to identify the methods that will be used to describe the performance of houses. Each standard will
15、relate to a separate attribute. The standards will not specify levels of performance and they are not intended to replace national standards or regulations, but provide a standardized framework to enable national standards and regulations to be developed in accordance with WTO requirements. These st
16、andards will not provide design methods and/or design criteria. Based on the framework provided by these standards, purchasers, regulators and standards-preparers in respective countries can describe their requirements in standardized performance terms. Additionally, the manufacturers/providers will
17、 be able to respond by describing the performance of their products in a similar manner. The purpose of this International Standard is to provide a standardized system of describing performance that can be used to specify performance requirements and performance levels, or to rate houses in terms of
18、 structural safety. NOTE World Trade Organization (WTO) Agreement on technical barriers to trade, 1997, Clause 2.8 states: “Whenever appropriate, members shall specify technical regulations based on product requirements in terms of performance, rather than design or descriptive characteristics.” INT
19、ERNATIONAL STANDARD ISO 15928-1:2003(E) ISO 2003 All rights reserved 1 Houses Description of performance Part 1: Structural safety 1 Scope This part of ISO 15928 sets out a method for describing the structural safety performance of houses. It covers user needs, provides performance descriptions, est
20、ablishes parameter descriptions, and outlines evaluation processes. It includes a description of permanent, imposed, wind, seismic, snow and other actions as well as structural resistance. This part of ISO 15928 is intended for use in the evaluation of the design and construction of houses, in the i
21、nternational trading of houses or their sub-systems, and in developing risk-management tools for the protection of houses. It describes the structural safety of a house as a whole. Annex A includes background information on this part of ISO 15928, guidance on its use, and suggestions on good practic
22、e. Details on references referred to in Notes are provided in a Bibliography. NOTE Structural serviceability, durability and other attributes will be covered in future parts of ISO 15928. 2 Normative references The following referenced documents are indispensable for the application of this document
23、. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2394:1998, General principles on reliability for structures 3 Terms and definitions For the purposes of this document, the terms and d
24、efinitions given in ISO 2394 and the following apply. 3.1 basic ground snow depth ground snow depth for a particular site before modifications are made for surrounding environment 3.2 basic wind speed wind speed at a specified height and a specified terrain for a particular site before modifications
25、 are made for surrounding environment ISO 15928-1:2003(E) 2 ISO 2003 All rights reserved 3.3 house building occupied for residential purposes which may be separated or linked horizontally, but not linked vertically, which has its own access and does not share any common space 3.4 load value of a for
26、ce corresponding to an action 3.5 parameters (structural) group of variables used to quantitatively describe the structural safety performance NOTE Structural parameters consist of variables describing magnitudes of the actions, magnitudes of structural resistance, and other conditions that may affe
27、ct the structural safety performance. 3.6 performance behaviour of houses related to users needs 3.7 structural safety performance behaviour of houses under possible actions related to human lives NOTE In the above definitions, “action” is defined as in ISO 2394. 4 Structural safety performance 4.1
28、User needs The risk of collapse or other kind of severe damage resulting from structural failure, which may affect the life safety of the house occupants in the house, or people in its vicinity, shall not exceed a level acceptable to the user. 4.2 Performance description The performance description
29、is the capacity of the whole house and its parts, with an appropriate degree of reliability, to maintain their strength and stability under all actions likely to occur during its design working life. NOTE 1 The appropriate degree of reliability can be judged with due regard to the possible consequen
30、ces of failure and the expense level of effort and procedures necessary to reduce the risk of failure. Aspects that are important in achieving the proper degree of reliability include choice of structural systems, design and analysis, durability design, quality control, maintenance and protective me
31、asures. NOTE 2 In addition, it is expected that the house would not be damaged by unexpected events, such as explosion, impact or consequences of human error, to an extent disproportionate to the original cause. NOTE 3 Likely actions may include those arising from soil/structure interaction, probabl
32、e ground movements, compatibility of connections between subsystems and the effects of openings. NOTE 4 For the purposes of this part of ISO 15928, the durability of materials are not considered to have a bearing on the structural performance of the house. -,-,- ISO 15928-1:2003(E) ISO 2003 All righ
33、ts reserved 3 4.3 Principles for describing structural safety performance The structural safety performance may be described by nominating the structural actions on the house and the resistance of the structure under the effect of those actions. 5 Parameters for the description of performance 5.1 Pa
34、rameters for describing actions 5.1.1 Permanent actions The permanent actions other than self-weight are described by the magnitude(s) in kilonewtons and the location(s) of the imposed load(s). 5.1.2 Imposed actions The imposed actions are described by the representative values of one or more of a)
35、a uniformly distributed floor or roof load, in kilopascals, b) a concentrated floor or roof load, in kilonewtons, over a specified area, in square metres, c) a concentrated wall impact load, in kilonewtons, applied at a specified height, in metres, above the floor; and d) a uniformly distributed hor
36、izontal line load, in kilonewtons per metre, applied at a specified height, in metres, above the floor. NOTE 1 ISO 2103 1 provides minimum recommended imposed actions for different types of use and occupancy. NOTE 2 An example of d) is the load on a hand rail. 5.1.3 Wind actions Wind actions are des
37、cribed by the representative value of the wind velocity, in metres per second, derived from the basic wind speed, factored as appropriate to take into account local effects, terrain, shielding, topography, altitude, etc., based on one of the following wind velocity types: a) 3-s gust; b) 1-min mean;
38、 c) 10-min mean; d) hourly mean. The effect of windborne debris on internal pressures should be considered. NOTE Refer to ISO 4354 2 for details on the conversion of wind velocity to wind forces and conversion between different types of wind velocity. 5.1.4 Seismic actions Seismic actions are descri
39、bed by stating the representative value of one of the following parameters: a) the effective peak ground acceleration, expressed as a fraction of gravity; -,-,- ISO 15928-1:2003(E) 4 ISO 2003 All rights reserved b) the base shear coefficient; c) the ground acceleration response spectrum for the site
40、. The proportion of the imposed loads to be included in the seismic mass shall also be nominated. The representative value shall be based on a consideration of the seismic activity, the soil characteristics of the construction site and the response behaviour of the structure. NOTE ISO 3010 3 provide
41、s additional information on seismic action on structures. 5.1.5 Snow actions The snow actions are described by stating the representative values of a) the ground snow depth, in metres, derived from the basic snow depth, factored to take into account local effects such as terrain, shielding, topograp
42、hy, etc., b) the snow density, in kilograms per cubic metre, i.e. the density to be used in converting the ground snow depth into a load, and c) the duration, in days per year. NOTE ISO 4355 4 provides information on the conversion of ground snow depths to roof snow loads. 5.1.6 Other actions Consid
43、eration shall be given to the description of other actions arising from floods, tornados, tsunamis, potentially unstable sites, windborne debris, temperature, impact, explosion, etc., if these actions are likely to affect the structural safety of the house. 5.1.7 Combinations of actions Consideratio
44、n shall be given to the description of the combinations of the actions to account for the probability of simultaneous occurrence of two or more actions. 5.2 Parameters for describing structural resistance 5.2.1 General The resistance of the structure under the effects of the actions can be described
45、 in terms of limit state criteria or allowable stress criteria for materials with recognized engineering properties in accordance with 5.2.2 or 5.2.3 and ISO 2394 where appropriate. Materials without recognized engineering properties may be described in accordance with ISO 2394. NOTE Reference shoul
46、d be made to relevant International Standards when available. 5.2.2 Resistance based on limit state criteria The following information shall be provided: a) strength reduction factor (resistance factor or partial safety factors); b) characteristic material strengths; c) testing methods from which th
47、e characteristic material strengths are determined. ISO 15928-1:2003(E) ISO 2003 All rights reserved 5 5.2.3 Resistance based on allowable stress criteria The following information shall be provided: a) factor of safety for stress criteria; b) characteristic material strengths; c) testing methods fr
48、om which the characteristic strengths are determined. 6 Evaluation 6.1 General Evaluation may be carried out by a) analysis, b) testing, c) service experience, or d) a combination of the above. NOTE The characteristic values of material properties used for analysis should be derived from Internation
49、al or other appropriate test standards. 6.2 Analysis Action effects on individual structural members shall be determined by methods of structural analysis that take into account equilibrium, general stability, geometric compatibility, and both short- and long-term material properties. Members that tend to accumulate residual deformations under repeated service loads shall have included in their analysis the added