Literature

BS 5973 SCAFFOLDING PDF

BS Code of practice for access and working scaffolds and special scaffold structures in steel Covers scaffolds and temporary structures such as. Documents Similar To BS BS Metal Scaffolding Part 2-Sec Uploaded by. tv-loc. Scaffolding Load Design. Uploaded by. onin Covers scaffolds and temporary structures such as spectator stands and temporary roofs. Reflects CEN published documents for tube and fittings. Document.

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Safe systems of construction and dismantling should be planned and adhered to on the site. Where guys are necessary they should be attached to node points in the structure. The distance between the lines of uprights should be the minimum scaffoldung to accommodate the required number of boards and toeboards. Where specified horizontal forces dcaffolding to be resisted in addition to wind forces, the structure should be plan braced so that those forces may be distributed along the length of the structure and subsequently distributed between the guys and anchors.

BS5973 to be officially withdrawn in 2010

These units may be used on a base framework of tube and fittings or on prefabricated scaffold frames. It is essential that they should not interfere with the scaffold structure or platforms or ties or braces in any way whilst using it and should not leave it in a hazardous condition for others to use.

When this cannot be achieved, a winch or turnbuckle should be used.

They should be at the level of the scaffold lift and be joined to both the inside and the outside ledgers or standards. This will be indicated in the amendment table on the inside front cover. Where the untied facade is longer than 6 m, plan bracing across the corners of the scaffold and its front and back returns should be fixed at intervals of height not more than 8. A British Standard does not purport to include all the necessary provisions of a contract.

Steps should be taken to prevent wat. Where wire or bonding ties are used, they should be turned round a node point of the scaffold or otherwise prevented from slipping along the ledger or upright by fixing safety couplers. The outside of the working platform should be kept as close to the walls as is practicable and the edge gaps should preferably not exceed mm.

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The vertical forces on the building should be taken at the location of the vertical tubes on the pads. Boards which are used on small static and mobile access towers and on other small platforms, where the platform is surrounded by a guardrail and posts and there are no end joints in the boards, need not be fixed down but should be prevented from moving.

The inside standards may be subject to an uplift. These beams may be fully welded lattice structures or fabricated in separate parts or units 5793 assembly on site. In either case the height of the towers should be such that rakers to the cross head can be installed. Spanners and podgers should have lengths as recommended by the coupler manufacturer. The bracing should be capable of catering for the loads referred to in On scaffolds of a height greater than 50 m, the transoms on unboarded lifts, when fixed at the frequency of one transom per pair of standards, should be fixed to the ledgers or scafvolding with right angle or other suitable couplers provided they are capable of sustaining a safe working slip load of 5 kN.

When built into an assembly, other than one requiring curved members, the erection tolerances given in Table 4 should not generally be exceeded. Ladders should not be extended by lashing two lengths together. They should be of such a height that the gap between the top of the toeboard and the guardrail does not exceed mm and have a minimum height of mm. To be effective, a ledger should be fixed adjacent to where the knee brace meets the standard.

It acts as a support for the putlogs and transoms and frequently for the tie tubes and ledger braces and is usually joined to the adjacent standards 3. Certain areas, particularly walkways, may require to be designed for special scaffolcing.

These should be fixed as close as possible to intersections. Materials should be firmly attached to the gin wheel rope and should not exceed 50 kg in mass. These standards are laced together with a grid of ledgers and transoms at every lift height and the top lift is boarded to form the access platform for work on scaffoldnig and soffits, e. When the bay length is 1.

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Where the capacity of individual anchorages is less than 6. Mobile towers should only be used on even ground, never on a slope which is sufficient to allow them to run away.

Right angle couplers may scaffoling used as stops, provided there is at least a 25 mm lap onto a suitable part of the building.

HSM – BS to be officially withdrawn in

The ledger or the transom may be fixed to each other instead of to the standards. Caitriona MacNeill, December 03,Dcaffolding Copy, c BSI Effective training of scaffolders is possibly the most essential factor in preventing accidents amongst both scaffolders and those who use scaffolds. If the towers are rectangular, the lifting tackle and ladders should be on the shorter side. For platform loadings on access towers and other types of scaffold, reference should be made to the relevant clause in section 5.

The scheme acaffolding, at present, only to scaffolders who work on scaffolding more than 5 m The guardrail posts should be fixed to the transom with right angle couplers so as to avoid the outward rotation of scaffloding posts which might occur if they were fixed to the ledgers.

BS 5973:1993

In situations where the birdcage is subjected to wind, bracing should be provided at the rate of one brace for every six verticals in each line. Figure 13 shows details of this construction. The propping rakers should be capable of tension as well as thrust and provided with safety couplers where necessary. The scaffilding bracing should be fixed as near to the standards as possible.

The attachment of hoist guides to scaffolfing ledgers or transoms should be by the method recommended by the hoist manufacturers. For further information concerning loading for protective barriers such as handrails, reference should be made to BS Toeboards, guardrails and mesh screens should be provided on pedestrian lanes.