tightness test
7.Superstructure compressed air (water supply、fire fighting、smoke detection)piping to be done air-tightness test.
8.Based on the local conditions of Taizhou City, this paper makes an introduction of mode selection of building external windows design in case of the most disadvantageous wind pressure and discusses technical matters on wind pressure resistance and air-tightness performance test with the application of new standards.
9.Accommodation air-condition Freon piping to be done air-tightness and vacuum test.

