Access scaffolding

Falls of persons Falling materials Collapse of structure 

Construction (Health, Safety and Welfare) Regulations 1996 Provision and Use of Work Equipment Regulations 1998 and ACoP (L22) 

British Standard BS 5973 1993 - Code of Practice for access and working scaffolds 

Ensure that only authorised personnel will erect, modify or dismantle scaffolding. For structures over 5 m in height CITB certification of erectors should be specified and checked. 

Design drawings should be produced for load-beahng scaffolds and non-standard structures, including those affected by abnormal wind loading. 

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Fig. 18.5 A typical compound library. Compounds are clustered in descriptor space (for example, around synthetically accessible scaffolds). For clusters with overlapping neighborhoods, efficiency may be increased by testing representative compounds from each cluster analogs of hits...

The complexity of the environment surrounding the coenzyme has prevented most simple model systems from dramatically enhancing thiamine reactivity or specificity [46-48]. Peptide- or protein-based models have the advantage of presenting a reasonably complex environment to the coenzyme functionality within a water soluble, yet synthetically accessible, scaffold. 

Scaffold diversity is an important parameter to characterize any compound collection. Organic synthesis is expected to provide efficient approaches to create three-dimensionally complex and structurally diverse small molecules. Branching pathways in DOS is an elegant approach to access scaffold diversity that could lead to small, yet diverse, focused compound libraries. Branching cascades strategy has successfully demonstrated the power and application of cascade or domino reactions in compound collection synthesis to build rapidly complex scaffolds for library synthesis. Further synthesis endeavors toward branching pathways... 

Never use cross braces on tubular welded frame scaffolds to access scaffolds. 

Although there is a trend in the construction industry towards specialised plant to meet a particular need, the most common material at present employed to provide access scaffolding is scaffold tube and couplers. Large-scale or difficult projects are best carried out by experts but there is a very large amount of scaffold erection of the smaller type in short-term use which can be quickly and safely erected by craftsmen who are to work on them, provided they have been trained in the basic techniques and requirements of these Regulations and the British Standard Code of Practice . 

GS 14 Provision of sanitary conveniences and washing facilities in agriculture GS 15 General access scaffolds... 

General access scaffolds and ladders, CIS49,1997, HSE Books... 

Figure 8.7 From CIS49 REVI General Access Scaffolds and Ladders. Construction Information Sheet No. 49 (revision) (HSE Books 2003). Crown copyright material is reproduced with the permission of the Controller of HMSO and Queen s Printer for Scotland.

Health and Safety Executive (1982). General Access Scaffolds, Guidance Note GS 15. London HMSO. 

There are three main types of access scaffold commonly... 

The provision of safe access and working places has been dealt with by Perkins. The most spectacular collapses of major access scaffold seem to be caused not so much by faulty design and erection, but more often by modifications carried out some time after successful erection of the initial design without sufficient regard being paid to their effect on the overall stability of the structure. 

Fig. 10. Projected time study of an access scaffold topped by a concrete support structure...

Daculsi, G., et al., 2011. Scaffold effects of microporous biphasic calcium phosphate granules and role of HPMC hydrogels in injectable multiphasic bone substitute developments. Bioceram. Dev. Appl. 1, 1-4. Available at http //www.omicsonline.coin/open-access/ scaffold-effects-of-microporous-biphasic-calcium-phosphate-granules-and-role-of-hpmc-hydrogels-in-injectable-multiphasic-bone-substitute-developments-2090-5025.110176. pdf (accessed 04.01.16). 

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