In the Unified Standard for Constructional Quality Acceptance of Building Engineering, the thermal insulation roof sub division of the building roof division divides three sub divisional works, namely, overhead roof, water storage roof and planting roof. Because the three sub divisional works cannot exist in a building at the same time in general, these three sub divisional works are combined into one quality acceptance record, At the same time, the number of three subdivisional works is given: 04