Of for the safe erection and use of scaffolding

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6. SCAFFOLDING WITHPROPRIETARY EQUIPMENT6.1 SCOPEThis part deals with standing scaffolds made from proprietary components andcomprises prefabricated frames and members, or unit-assembled equipment.6.2 GENERAL REQUIREMENTSWhere equipment comprises a complete set of components of unique design,the supplier of the system must provide a complete set of instructions for thesafe erection and use of the scaffold. The supplier’s instructions for use mustalways be followed. When properly assembled, with all fittings tightened, thescaffold must be equivalent in strength to the standard tubular scaffold ofsimilar height and width. It must be sufficiently robust to resist deformationunder normal handling conditions and to provide adequate transverse stiffnessto each pair of standards.Scaffolds must be properly braced by cross-bracing or diagonal braces, orboth, for securing vertical members together laterally, and the cross bracesmust be of such length as will automatically square and align vertical membersso that the erected scaffold is always plumb, square and rigid. All braceconnections must be made secure.Scaffold legs must be set on either plain or adjustable bases.Where it is necessary to extend the legs of frames because of unevenfoundation levels, special care must be taken. Adjustable screw extensionpieces must have at least 200 mm length of spigot inside the upper tube(fig. 15). Packing that is built up to provide a firm footing must be so arrangedas to avoid possible displacement, with the least plan dimension of thepacking being twice its height.All equipment must be either hot-dipped galvanised or suitably painted whenused in scaffolds which are exposed for prolonged periods to marine orcorrosive atmospheres. 200 mm minFirm footingFig. 15 Adjustable screw extension.46 SAFE ERECTION AND USE OF SCAFFOLDING
6.3 FRAME SCAFFOLDINGFrame scaffolding in this context means the portal-frame type scaffoldingassembled on the site from prefabricated frames and members. Frames ofdifferent proprietary types must not be intermingled. Where frames are superimposedvertically, the connection must be such that:(a)The standards are held in linear alignment.(b) The panels are locked together vertically by joint pin couplers or otherequivalent suitable means.Number of working platforms should be the same as standard tubularscaffolding. Longitudinal bracing depends on the use of ledgers:(a)Without ledgers, both faces of the scaffold in each lift of each bay areto be cross-braced.(b) With ledgers, brace either with diagonal tubes as for tubularscaffolding, or cross-braced every bay for the first 12 m height ofscaffold, reducing to one bay in two for the next 12 m height up, andone bay in four for the top 9 m of height (see fig. 16).Guardrails and midrails must be provided at working platform levels whencross braces are removed.6.4 UNIT-ASSEMBLED SCAFFOLDINGUnit assembled scaffolding means scaffolding assembled from prefabricatedframes or members which are not single lift portal-frame type units. Thespecific requirements are:(a)(b)(c)(d)(e)Erection must be carried out in accordance with the supplier’sinstructions and meet the requirements of this code.Spacing of unit frames will, in general, be less than for tube and framescaffolding unless ledgers are used.Bracing will be the same as for the scaffolding.Because of the lack of continuity in standards and of the lesser rigidityin the transverse corner joints, special attention must be given toprovide an adequate number of ties to prevent lateral movement.Scaffold constructed from light-weight aluminium tube (less than 2 mmwall thickness) shall not exceed 9 m in height unless subject to specialdesign.6.5 BRACKETS6.5.1 PREFABRICATED SCAFFOLD BRACKETSPrefabricated scaffold brackets which are attached to a structure to providesupport for a working platform must:(a)Have adequate and suitable means of attachment to provide verticalsupport and to resist accidental sideways movement.SAFE ERECTION AND USE OF SCAFFOLDING 47
Page 2 and 3: Published by the Occupational Safet
Page 4 and 5: 2. DESIGN REQUIREMENTS ............
Page 6 and 7: NOTICE OF ISSUEI have issued this A
Page 8 and 9: PREFACEThis revised publication on
Page 10 and 11: (e) Provide procedures to deal with
Page 12 and 13: ACCIDENTS AND SERIOUS HARM (RECORDS
Page 14 and 15: Coupler: A fitting used to fix scaf
Page 16 and 17: (b) Includes any scaffolding constr
Page 18 and 19: Notwithstanding the above definitio
Page 20 and 21: only), ropes, gin wheels, safety ne
Page 22 and 23: 1.9.1 SCAFFOLDING REGISTER AND INSP
Page 24 and 25: Minimum Distance in Any Direction f
Page 26 and 27: 2. DESIGNREQUIREMENTS2.1 PRINCIPLES
Page 28 and 29: 2.5 SUPPORTING STRUCTURE2.5.1 GENER
Page 30 and 31: 3.3 WORKING PLATFORMSWorking platfo
Page 32 and 33: It is good practice to butt planks
Page 34 and 35: and the middle of the topmost worki
Page 36 and 37: 36 SAFE ERECTION AND USE OF SCAFFOL
Page 38 and 39: (a) Transverse diagonal bracing mus
Page 40 and 41: 4. TIMBERSCAFFOLDING4.1 SCOPEThis p
Page 42 and 43: 5. TUBE SCAFFOLDING INSTEEL OR ALUM
Page 44 and 45: (b)Attached to both rows of standar
Page 48 and 49: Maximumheight 33 m48 SAFE ERECTION
Page 50 and 51: 7. FREE-STANDINGSCAFFOLDS7.1 FREE-S
Page 52 and 53: oth, for securing vertical members
Page 54 and 55: 8. SUSPENDEDSCAFFOLDS8.1 SCOPEThis
Page 56 and 57: 8.3.4 OUTRIGGERS (NEEDLES)Design: I
Page 58 and 59: 58 SAFE ERECTION AND USE OF SCAFFOL
Page 60 and 61: through bolts, fishplates or other
Page 62 and 63: 9.5 CANTILEVER SCAFFOLDSA cantileve
Page 64 and 65: SCAFFOLD REGISTERThe following info
Page 66 and 67: APPENDIX B: SUSPENDEDSCAFFOLD REGIS
Page 68 and 69: Overhang(mm)3.64.04.4Total Length (
Page 70 and 71: APPENDIX C: WEIGHTS OFMATERIALS USE
Page 72 and 73: APPENDIX D: SCAFFOLDINGMATERIALS TE
Page 74 and 75: APPENDIX E: RIGGINGFOR SCAFFOLDERSG
Page 76 and 77: When rigging crane-lifted bundles o
Page 78 and 79: APPENDIX F:PERFORMANCEREQUIREMENTS
Page 80: 108 MATERIALS108.1 Timber planks108

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