Metal scaffolding, Specification for materials, dimensions, design loads and safety requirements for service and working scaffolds made of prefabricated elements— 28 стр.
91.220 Construction. Including scaffolding, mixers for concrete and mortar, etc. / Строительное оборудование. Включая строительные леса, бетоносмесители и мешалки для строительных растворов и т.д.
