3. On the market must have signage according to the provisions of article 74 of law building. At the main gate on must have a diagram of the school premises, hangs the work rules. Measures to ensure safety, safety rules have to be common and publicly on the construction site so people know, and observance; the dangerous positions on the market such as nail holes, trench, manholes are fenced, the warnings and instructions to prevent accidents; night must have lights.
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