Unnatti Methodology and quality procedure.pdf

113 construction and material sufficient sound

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11.3 Construction and Material : Sufficient sound material will be provided for a scaffold to ensure that i is strong and stable enough. Scaffold tubes and fittings will not be bent, distorted or rusty. 11.4 Defective Material Scaffold tubes, couplers and fittings that are bent, distorted or rusty shall not be used. Timbers with splits and knots shall not be used. Ropes and lashings showing signs of chafing through wear or of being corroded shall not be used. 11.5 Standards or Uprights, Ledgers and Putlogs Scaffold standards shall be vertical and spaced closely enough for the intended use of the scaffold. Base plates shall be used. Timber sole plates shall also be used to distribute the load from the standard over a wider area, as well as to offset possible local subsidence. Ledgers shall be level and fixed to standards with right-angle couplers. Putlogs and transoms shall be firmly fixed to ledgers or standards. The flattened end of the putlog shall be pushed firmly into the wall to provide maximum support. Putlogs and transoms shall be spaced according to the expected load and thickness of he boards o be used in the platform.
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UNNATTI CONSTRUCTIONS PVT. LTD . (ISO 9001:2000) 56 SAFETY HEALTH ENVIRONMENT POLICY 11.6 Stability of Scaffolds. 11.6.1 All scaffolds shall be : ¾ ON a solid, even base or suspended from a sound structure. ¾ Braced to prevent failure, and ¾ Tied to the building or structure unless specially designed to be completely independent. 11.6.2 Mobile Scaffolds shall : ¾ Be stable, weighted at the base, if necessary and be used only on a flat, level surface. ¾ Have the wheels locked to prevent movement whilst being used for work and be pushed or pulled only at the base when being moved. 11.6.3 Slung Scaffolds shall : ¾ Be strong enough ¾ Be properly secured to overhead anchorages and to the platform frame ¾ Be spaced so as to keep the platform stable ¾ Be vertical, kept taut. No rope other than wire rope shall be used for suspension and packing will be used to prevent damage to suspension ropes or chains at any point where sharp or rough edged protrusions could release chafing. The platform shall be secured to prevent swaying whilst in use. 11.6.4 Cantilever, Jib, Figure and Bracket Scaffolds Cantilever or jib scaffolds shall be anchored to a structure which is strong enough to carry the total load. Outriggers shall be long enough and strong enough and the scaffold shall be braced to ensure stability. Figure or bracket scaffolds supported by dogs or spikes will not be used if there is any danger of these pulling out of the brickwork or stone-work. 11.6.5 The ropes, winches, blocks and tackle shall be strong enough and correctly rigged. A safe anchorage for the suspension shall be provided.
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UNNATTI CONSTRUCTIONS PVT. LTD .
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