Ключевые слова: alertness, ancient, armor, assemblage, attention, bars, beam, bolt, bolted, bolts, building, building exterior, built structure, carpentry, century, concept, concepts, construction, construction industry, constructive, corrosion, decrepit, deteriorated, focus, ideas, industrial, industry, iron, iron metal, loom, magnifying glass, metal, metal profile, metal section, metallic, nineteenth, old, oxidized, research, rust, rusted, rusty, scrap, scrap metal, searching, solidity, stability, steel, structural, structure, technology, the past, time,