As compared to design codes of practice in developed countries, the safety margin of structural members set in the Chinese Building Code for Concrete Structures is rather low.

我国混凝土结构设计规范的安全设置水准与国际通用标准之间存在着相当大的差距。

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However, as for most of structural buildings, major references of anti-typhoon design are related codes.

目前，大多数建筑物主要依据相关设计规范进行抗风设计。

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After the 1968 Ronan Point tower block partial collapse in London, in which four people died, new British Standard Structural Design Codes for concrete were introduced to prevent it happening again.

BBC: WTC collapse forces skyscraper rethink