BS 1139-5:1990 HD 1000:1988. Metal scaffolding - Part 5: Specification for materials, dimensions, design loads and safety requirements for service and working scaffolds made of prefabricated elements

BS 1139-5:1990 HD 1000:1988. Metal scaffolding - Part 5: Specification for materials, dimensions, design loads and safety requirements for service and working scaffolds made of prefabricated elements

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