Research on the Building Drainage Water Supply System Design Methodology based on the New Design Standard

In this paper, we conduct theoretical research on the building drainage water supply system design methodology based on the new design standard. According to the structure of engineering construction standard system in our country can be divided into basic, universal and special structure of three layers. General guide water supply and drainage engineering structure design standards for the specialty of the standard type. Building water supply and drainage design standards is the main basis. Our research will enhance the overall performance of the system which will be meaningful.