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previous data for tornadoes

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发表于 2009-9-15 14:46:38 | 显示全部楼层 |阅读模式
previous data for tornadoes
i want to know that while designing the structure in tornado striking areas how many years data is considered for design calculation?
find a job or post a job opening
get a copy of fema 361.  it may have this information in it.
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