You may also find it interesting that FEMA believes that LESS treated wood is needed in flood prone areas instead of MORE. I refer you to the new 2015 IRC Section R322.1.8 FEMA and AWC were the ones to introduce that code change and lobby it through the committee and floor vote in Atlantic City last year.
If there is any effort to overturn this and move the mountain in the other direction, it will have to come during the 3-year process for the 2018 codes, which is just starting.
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