Special works concern, mainly the works connected with special kinds of materials and the ways of manufacture, applied at erection of designs or constructions. For example, the device of mine trunks, facing or obmurovka technological units and devices kislotoupornoj or a fire-resistant laying, drawing on designs of anticorrosive coverings, and also the device of power, lighting, telephone and other networks, installation of sanitary-engineering systems and devices, lifts.
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