5GB 50068 -2001 Unified standard for reliability design of build- ing structures[ S], Bejing: China Architecture & Building Press, 2001.
6GB 50010 -2002 Code for design of conerete structures[ S]. Be- jing: China Architecture & Building Press, 2002.
7GB50069- 2002 Structural design code for special structures of water supply and waste water engineering[ S]. Bejing: China Ar- chitecture & Building Press, 2002.
8GB 50476 - 2008 Code for durability design of concrete structures [ S]. Bejing: China Architecture & Building Press, 2008.
