Cloud number 9 is, in fact, a reference by the International Cloud Atlas--first published in 1896, It's initial purpose included aiding the training of meteorologists and promoting more consistent us of vocabulary describing clouds, Cloud 9 being one of the highest. Many are familiar with the term as an expression of bliss and maybe how a design professional and craftsman fell when a concrete design comes full circle. The article that started the Concrete 9 series was published in 2011 in Specifiers Magazine, was a foundation for developing products that are more common in the marketplace today.