The "Design Standards for Irrigation and Drainage Engineering" is now approved as a national standard, numbered GB50288-2018, and will be implemented from November 1, 2018. Among them, Articles 20.4.2 and 20.4.3 are mandatory provisions and must be strictly implemented. The original "Code for Design of Irrigation and Drainage Engineering" GB50288-99 shall be abolished at the same time. This standard is published on the website of the Ministry of Housing and Urban-Rural Development (www.mohurd.gov.cn), and is published by China Planning Publishing House organized by the Institute of Standards and Quotas of the Ministry of Housing and Urban-Rural Development. Ministry of Housing and Urban-Rural Development of the People's Republic of China March 16, 2018
GB 50288-2018 history
2019GB 50288-2018 Irrigation and Drainage Engineering Design Standards
1999GB 50288-1999 Code for design of irrigation and drainage engineering