NKK successfully constructed surface treatment lines, including an electrolytic tinning & tin free (chromium plating) line, at the Erdemir Iron & Steel Works on the coast of the Black Sea in Turkey. One of the most difficult components of this project was the large-scale shoring work in an existing building, which was performed under various restrictions including the choice of construction method, limited construction materials and restricted construction space on site. Shoring was necessary to excavate a half of the building area (1950m²) and construct two concrete pits (10m deep). As a result, the shoring work was safely completed, and the efficiency of the work plan was demonstrated. Problems during construction, along with the associated countermeasures and their effects on this large-scale shoring plan are introduced.

surface treatment line, tinning, tin free, shoring, sheet pile, looper pit, abnormal deformation, Erdemir, iron & steel work, Turkey