건축 층고 확장을 위한 철골 기둥 삽입 기술 가이드 #worker #process #architecture #welding #technician

追加: 2026-05-23

This video demonstrates the steel column insertion technique for extending building floor height, where existing steel columns are cut and a new H-beam section is inserted between them using splice plates and high-strength bolts, with the process requiring precise vertical alignment and structural integrity verification.