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    ISO 9652-2-2000 Masonry - Part 2 Unreinforced masonry design by simple rules《砌体工程 第2部分 用单一规则进行无增强砖石工程设计》.pdf

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    ISO 9652-2-2000 Masonry - Part 2 Unreinforced masonry design by simple rules《砌体工程 第2部分 用单一规则进行无增强砖石工程设计》.pdf

    1、STD*ISO 9b52-2-ENGL ZOOU 1851903 O818bb7 UT7 INTERNATIONAL STANDARD IS0 9652-2 First edition 2000-04-01 Masonry - Part 2: Unreinforced masonry design by simple rules Maonnerie - Partie 2: Conception de la maonnerie non arme par des rgles simplifies This material is reproduced from IS0 documents unde

    2、r International Organization for Standardization (ISO) Copyright License Number HIS/CC/1996. Not for resale. No part of these IS0 documents may be reproduced in any form, electronic retrieval system or otherwise, except as allowed in the copyright law of the country of use, or with the prior written

    3、 consent of IS0 (Case postale 56,121 1 Geneva 20, Switzerland Fax +4122 734 10 79), IHS or the IS0 Licensors members. Reference number IS0 9652-2:2000(E) Q IS0 2000 IS0 9652-2:2000(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file m

    4、ay be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The IS0 Central Secretariat acc

    5、epts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that t

    6、he file is suitable for use by IS0 member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. Q ISO2Ooo All rights reserved. Unless otherwise specified, no pari of this publication may be reproduced or utilized in an

    7、y form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IS0 at the address below or ICOs member body in the country of the requester. IS0 copyright office Case postale 56 CH-121 1 Geneva 20 Tel. + 41 22 749 O1 11 Fax + 41 22 7

    8、34 10 79 E-mail copyrightiso.ch Web w.iso.ch Printed in Switzerland 8 IS0 i 999 - All rights reserved STD-IS0 b52-2-ENGL 2000 M 4851903 OBLBbb7 77T m IS0 9652-2:2000(E) Contents Page Foreword . iv Introduction . v 1 2 3 4 5 6 6.1 6.2 6.3 6.4 7 7.1 7.2 7.3 8 8.1 8.2 8.3 9 10 11 Scope 1 Normative refe

    9、rences 2 Terms and definitions . 3 Symbols 3 Stability and robustness . 3 Limiting loads, strengths and dimensions . 4 General 4 Limits in respect of walls (but see Table 1) 4 Limits on sizes of openings 5 Limits on positions of openings 6 Thickness of walls . 7 External and separating walls 7 Inter

    10、nal walls 8 Basement walls 8 Rules for stiffening walls. piers and chimneys 9 General 9 Internal stiffening walls providing restraint 9 Piers and chimneys providing restraint 9 Walls subjected mainly to wind load . 10 Non-loadbearing internal walls 15 Chases and recesses 15 Annex A (normative) Rules

    11、 for seismic zones . 17 Annex B (normative) External walls of certain small single-storey buildings and annexes . 19 8 IS0 2000 -All rights reserved iii STD.ISO b52-Z-ENGL 2000 i.1851703 0818b7O b1 = IS0 9652=2:2000(E) Foreword IS0 (the International Organization for Standardization) is a worldwide

    12、federation of national standards bodies (EO member bodies). The work of preparing International Standards is normally carried out through IS0 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 co

    13、mmittee. International organizations, governmental and non-governmental, in liaison with EO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accord

    14、ance with the rules given in the ISOAEC Directives, Part 3. Draft International Standards 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

    15、drawn to the possibility that some of the elements of this part of IS0 9652 may be the subject of patent rights. IS0 shall not be held responsible for identifying any or all such patent rights. International Standard IS0 9652-2 was prepared by Technical Committee ISO/TC 179, Masonry, Subcommittee SC

    16、 1, Unreinforced masonry. IS0 9652 consists of the following parts, under the general title Masonry - Part 1: Unreinforced masonry design by calculation - Part 2: Unreinforced masonry design by simple rules - Part 3: Reinforced masonry design by calculation - Part 4: Test methods - Part 5: Vocabular

    17、y Annexes A and B form a normative part of this part of IS0 9652. iv STDOIS0 9b52-2-ENGL 2000 W 4651903 0816b71 526 IS0 9652-2:2000(E) Introduction The rules in this part of IS0 9652 are intended to provide certain masonry designs without the need for structural calculations. IS0 9652-1 and some nat

    18、ional standards will be more restrictive in certain circumstances. Annex A gives additional rules for use in seismic zones. Annex B gives rules for certain small single-storey buildings and annexes. Q IS0 2000 -All tights reserved V STD-IS0 7b52-2-ENGL 2000 W 4851703 OBLBb72 4bll W INTERNATIONAL STA

    19、NDARD IS0 9652-2:2000(E) Masonry - Part 2: Unreinforced masonry design by simple rules 1 Scope This part of IS0 9652 gives limited rules for the structural design and construction of unreinforced masonry for which calculations of loading and strength criteria are not required. This part of IS0 9652

    20、is applicable to masonry built with Group 1, 2, or 3 masonry units see 5.2.1 of IS0 9652-1:- of clay, calcium silicate, concrete (including autoclaved aerated concrete), and manufactured stone units. The field of application is defined in Table 1 and is subject to the limitations of normative annex

    21、A. NOTE all walls covered by this pari of IS0 9652. For masonry designed by calculation, see IS0 9652-1. Clauses 5, 6, 7 and 8 should be taken together; clauses 9 and 10 may be applied separately; clause 11 applies to Table 1 - Field of application I Type of wall Loadbearing Basement walls External

    22、non-load bearing Internal non-load bearing Type of building Low-rise dwelling of not more than two floor levels in addition to any basement Other small single-storey buildings All buildings All buildings up to and including four storeys except low-rise dwellings of not more than two floor levels in

    23、addition to any basement All buildings Location Sheltered coastal sites and inland sites except very exposed hills and crests All sites Site with many windbreaks, such as city, town or well-wooded areas Inside buildings without large openings Type of loading Vertical and wind loads (for limits see c

    24、lause 6) Earth pressure and vertical loads Wind load. No significani vertical load No significant vertical or wind loads O IS0 2000 - All rights reserved 1 The following are not covered by this part of IS0 9652: a) foundations as shown in Figure 1; b) free-standing walls; c) retaining walls other th

    25、an basement walls; d) basement wails subjected to hydrostatic pressure; e) masonry in seismic areas with expected ground accelerations in excess of 1 ,O m/s* (see normative annex A). Key 1 Within scope 2 Outsidescope Figure 1 - Foundations 2 Normative references The following normative documents con

    26、tain provisions which, through reference in this text, constitute provisions of this pari of IS0 9652. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of IS0 9652 are encouraged to investigate

    27、the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IS0 and IEC maintain registers of currently valid intemational Standards. IS0 9652-1 :- 1, Masonry - P

    28、att I: Unreinforced masonry design by calculation, IS0 9652-3:-1), Masonry - Patt 3: Reinforced masonry design by calculation. IS0 !3652-4:-1), Masonry - Part 4: Test methods. Is0 952-5:2000, Masomy - Part 5: Vocabulary. 1) To be published. 2 8 IS0 2000 -All rights resenred STD*ISO 9b52-2-ENGL 2000

    29、Y851903 0818b7Li 237 IS0 9652-2:2000(E) 3 Terms and definitions For the purposes of this part of IS0 9652, the terms and definitions given in IS0 9652-5 apply. 4 Symbols d X X Y Permitted area of opening, in square metres (m2) Lengths of wall between one opening and ahother or between an opening and

    30、 a buttressing wall or pier Maximum dimension of an opening (height or width) in a wall, which relates to the distance of the opening from the main restraints or roof Height of a wall Height of a masonry unit, in millimetres (mm) Height of the ground above the basement floor Length of a wall Widths

    31、of openings in a wall Wall thickness (whether of solid or cavity construction), in millimetres (mm) Thickness of the outer leaf of a cavity wall, in millimetres (mm) Thickness of the inner leaf of a cavity wall, in millimetres (mm) Thickness of restraining wall and wall to be restrained respectively

    32、, in millimetres (mm) Minimum overlap between the perpend in a course of masonry and the perpend in the course immediately above or below it, in millimetres (mm) Depth of a chimney or pier (direction perpendicular to the plane of the wall), in millimetres (mm), A factor which governs the relationshi

    33、p between the widths of openings in a wall and a) the lengths of wall between one opening and another, b) the lengths of wall between an opening and a buttressing wall or pier Depth of a pier (direction perpendicular to the plane of the wall), in millimetres (mm). 5 Stability and robustness For a ro

    34、bust and stable structure, it will be necessary to provide a layout of walls which will enable all lateral forces to be resisted in the two main directions. Such a design can be achieved most satisfactorily when the walls are arranged in a cellular form in which the loadbearing walls are provided wi

    35、th substantial returns, piers or chimneys. The connections between interacting walls and between walls, roofs or floors should be capable of transmitting lateral forces to the foundations; one way of achieving this is by the use of ring beams. The design should also ensure that any foreseeable negat

    36、ive loads, particularly suction loads on flat or shallow pitched-roof structures are resisted by suitable connections. Q IS0 2000 - All rights reserved 3 STD=ISO 7b52-2-ENGL 2000 I 4851903 O81Bb75 173 IS0 9652-2:2000(E) Connections may be achieved by the bonding of masonry or, in some cases, by fric

    37、tion at floor and beam bearings on masonry. Alternatively, strong, durable, creep-resistant straps, ties, hangers, brackets and angles may be used as connections between walls and restraining walls and between walls and floors or roofs acting as buttresses. Ring beams at the head of each storey may

    38、also be used to provide horizontal supports. 6 Limiting loads, strengths and dimensions 6.1 General If loads, strengths or dimensions fall outside the limits given in this clause then calculations should be made for that part of the structure affected. 6.2 Limits in respect of walls (but see Table 1

    39、) 6.2.1 The imposed load on any roof, for example snow load, should not exceed 0,9 kN/m2, excluding wind load. 6.2.2 2,O kN/m2. The imposed load on any suspended floor, excluding the load from internal walls, should not exceed 6.2.3 6.2.4 The imposed load on any floor due to any internal walls shoul

    40、d not exceed 1,2 kN/m2. The wind load, including internal and external pressures, should not exceed 1,2 kN/m2. 6.2.5 Floors and roofs should not have a mass greater than 550 kg/m2, including any screed or concrete topping. 6.2.6 The minimum normalized compressive strength of masonry units measured i

    41、n accordance with IS0 9652-4 should be 4,O Nlmrn2 unless otherwise required by the rules (normative annex A and Table 2). If the minimum wall thickness of 100 mm is increased to 240 mm then the minimum normalized strength may be reduced to 3,O N/mm*. Linear interpolation is permitted. The minimum mo

    42、rtar class in accordance with is0 9652-1 should be M2, except where the web thickness of units that have more than 50 % voids is 20 mm or less. In that case, the minimum mortar class should be M10. 6.2.7 normalized compressive strength given in 6.2.6 is increased by 1 O %. The thickness of the loadb

    43、earing leaf of a cavity wall may be reduced to 90 mm provided that the minimum 6.2.8 The clear span of floors or concrete roof members should not exceed 6 m. 6.2.9 loadbearing leaf is sensibly axial, otherwise the clear span should not exceed 9 m. The clear span of timber roofs should not exceed 12

    44、m when the reaction of the timber roof on the 6.2.1 0 The clear span of lintels over openings should not exceed 3 m (see Figure 2 and 6.3). 6.2.11 In the absence of calculations, the length of lintel bearings (see Figure 2) should be not less than the following for masonry built from units of Group

    45、1: a) for timber floors spanning at right angles to the lintel, one tenth2) of the length of the opening; or b) for concrete floors spanning at right angles to the lintel, one sixth of the length of the opening but, in any case not less than 150 mm except where the length of masonry between openings

    46、 is less than 300 mm in accordance with 6.3, when the bearing length should be not less than 120 mm and the bearing area should be not less than 15 o00 mm2. 2) For a single-leaf Wall or the inner leaf of a cavity wall of thickness greater than 100 mm, the minimum length of bearing given here may be

    47、multiplied by the ratio: 100 J leaf thickness (in millimetres) 4 o IS0 2000 -An rights msefueu STD*ISO 7b52-2-ENGL 2000 4851703 OBLBb7b OUT IS0 9652-2:2000(E) For masonry built from units of Groups 2 or 3, the length of lintel bearing shown above should be increased by 1/3. 6.2.12 The bearing for fl

    48、oors spanning on walls should be not less than 85 mm. Key 1 2 Opening (see 6.2.10) Bearing length (see 6.2.1 1 and 6.2.12) Figure 2 - Length of lintel bearing 6.2.1 3 For single-leaf construction, masonry units should have a normalized compressive strength equal to or greater than that for the inner

    49、 leaf of a cavity wall in the same position. 6.2.14 To ensure adequate bonding, masonry units should overlap by a length of at least 0,4 x the height of the unit when looking at the face of the wall, or 45 mm, whichever is the greatest (see Figure 3). Key U h Minimum overlap which should be greater than or equal to 0,4 h and greater than or equal to 45 mm Height of a masonry unit, in millimetres Figure 3 - Bonding of units; minimum overlap 6.3 Limits on sizes of openings The sizes of openings should be determined in accordance with the following rules: 21 - 1, + l2 should n


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