Design and installation of natural stone claddingandlining
Part 5: Internal cladding and lining - Code of practice
Publishing and copyright information
@ The British Standards Institution 2023
Published by BSI Standards Limited 2023
ISBN 978 0 539 19094 6
ICS 91.080.30
Amendments/corrigenda issued since publication
Text affected
Contents
Page
1Scope Foreword I 12 Normative references 13 Terms and definitions 34 Stone selection process Figure 1 - Birdsmouth joint 6 74.1 General 74.2 Stone samples and testing Table 1 - PCT testing of characteristics of slabs for clodding or lining 8 6Table 2 - Stone testing regime in oddition to the requirements of BS EN 1469:2015 115.1 5 Designing internal cladding General 12 125.2 Movement in structures 13Deflection limits Table 3 - Origins of movement in structures 13 135.4 5.3 Impact loading 145.5 Material strength 145.6 Factors of safety Table 4- Components of overallfactor of safety 16 185.7 Impact 195.8 5.9 Staining and changes in appearance Cavities 20 205.10 Methods of attachment and support for internal cladding 21Figure 2 -T Typical internal clading fixings incorporating a cavity 22 23Figure 4 - Undercut anchors as soffitfixings Figure 3 - Back anchors 24Figure 5 - Kerfs and mortices 25Figure 6 - Section through typical loadbearing and restraint fixing Figure 7 - Adjustable restraint fixing at pression joint level 25 26Figure 8 - Restraint fixing at pression joint 27Figure 9 -Face fixing Figure 10 - Three-way adjustment of fxings 27Table 5 - Corrosion of metals in an industrial/urban atmospheric environment 30Figure 11 - Loadbearing fixing Figure 12 - Location of fixings 32 33Figure 13 - Position of restraint fixings 35Figure 14 - Glued and pinned cornerToble 6 - Length of return Figure 15 - Solid L-shaped return5.11 Jointing and pointing6 Internal lining methods of attachment and support for internal cladding 7 Soffit and ceiling fixings 42 43Figure 16 - Use of plates and dowels in soffit and ceiling stone 44Figure 17 Typical sofit support framing Figure 18 - Typical soffit support framing (with top hat fixings to structure) 46 478 Installation of stone slabs of more than 12 mm and up to 20 mm thickness 47Figure 19 - Restraint cramp and dowel 49Figure 20 Combined support and restraintfixing 50
Figure 21 - Wire restraint cramps 51Figure 22 - Restraint cramp 519 Work practices in production General 52 529.2 Sizes and tolerances 52Dowel holes and mortices Table 7 - Tolerances for the shape of dowel holes in production 52 539.4 Marking 53Production and storage 5310.1 Work practices on site Permissible deviations (construction tolerances for cladding and lining) 53 53Tabie 8 - Stonework erection tolerances for intermal cladding 5310.2 Table 9 - Internal cladding joint tolerances Scaffolding 54 5410.3 Movement and storage of materials 5410.4 10.5 Fixings Bedding jointing and sealing of joints 55 5510.6 Movement joints and pression beds 5510.8 Protection 10.7 Inspection of finished works 5510.9 Site repairs 56 5610.10 Cleaning on pletion of work 5611 Maintenance 56AnnexA Figure A.1 - Exomple sompling plan (informative) Sampling of natural stone: plan and report 58 59Figure A.2 - Exomple sompling report 60Figure A.3 - Sompling for representative samples 61Annex B (normative) Method of test for kerf clip or channel fixings under tensile load Figure B.1 Test arrangement for kerf clip or channel fixing under tensile lood 62 62Figure B.2 Typical report format of tensile lod of kerf clip or chanel fixings 9Annex C (normative) Method of test for undercut anchor fixings under tensile load 64Figure C.1 - Test arrangement for undercut anchor fixing under tensile load 64Annex D (normative) Method of test for undercut anchor fixings in shear Figure D.1 Test arrangement for undercut anchor fixings in shear 66 67Annex E (normative) Method of test for undercut anchor fixings under bined tensile and shear load 69Figure E.1 Test arrangement for undercut anchor fixings under bined tensile and shear load 70Annex F (informative) Determination of slab thickness by calculation 71Annex G (informative) Worked example of flexural design and fixing breakout design checks Table G.1 Poartiat material factors of safety 74Table G.2 - Flexural designTabie G.3 - Fixing breakout design Worked exomple 76
Summary of pages
This document prises a front cover an inside front cover pages I to IV pages 1 to 78 an inside back cover and aback cover.
Foreword
Publishing information
Natural stone. A list of organizations represented on this mittee can be obtained on request to themittee manager.
Institution and came into effect on 30 June 2023. It was prepared by Technical Committee B/545
Supersession
This part of BS 8298 supersedes BS 8298:1994 and partially supersedes BS 8298-1:2010 whichare withdrawn.
Relationship with other publications
BS 8298 is published in the following parts:
Part 2: Traditional handset externol clodding - Code of practice;•Part 3: Stone-faced pre-cast concrete cladding systems Code of practice;●Part 4: Stone cladding on rainscreen support systems Code of practice; and* Part 5: Traditionai handset internal cladding Code of practice.
Information about this document
To provide more consistency with other material design standards it is the long-term goal for the partial safety factors presented in the British Standard to be derived from a reliability-basedanalysis in accordance with the principles of BS EN 1990:2020A1:2005 Annex D. However thevalues presented in this edition are derived from industry experience and a historical precedent of conformity and not a reliability-based analysis.
This publication can be withdrawn revised partially superseded or superseded. /standards or by contacting the Customer Services team.
regarding the status of this publication can be found in the Standards Catalogue on the BSI website at
Where websites and webpages have been cited they are provided for ease of reference and are correct at the time of publication. The location of a webpage or website or its contents cannotbe guaranteed.
Use of this document
As a code of practice this part of BS 8298 takes the form of guidance and remendations. It is notto be quoted as if it were a specification. Users are expected to ensure that claims of pliance arenot misleading.
It has been assumed in the preparation of this part of BS B298 that the execution of its provisions willbe entrusted to appropriately qualified and experienced people for whose use it has been produced.
Users may substitute any of the remendations in this part of BS 8298 with practices of equivalentor better oute. Any user claiming pliance with this part of BS 8298 is expected to be able tojustify any course of action that deviates from its remendations.
Presentational conventions
The provisions of this standard are presented in roman (ie. upright) type Its remendations are expressed in sentences in which the principal auxiliary verb is *should".
