Keywords:
Buildings, Castors, Components, Construction, Crash protection devices, Cross arms, Cutting, Definitions, Design, Erecting (construction operation), Fall, Fold of a folding door, Gates, Hand operated, Hazards, Maintenance, Malfunction, Manual, Manual operation, Mathematical calculations, Mechanical behaviour of materials, Mechanical crimping, Mechanical properties, Mechanical safety, Mechanics, Performance tests, Powered, Power-operated, Protection against danger, Protective measures, Risk analysis, Roller grids, Safety, Safety devices, Safety engineering, Safety grips, Safety measures, Safety requirements, Shearing, Specification (approval), Strength of materials, Test pieces, Testing