Si canalibus, ut structura fiat quam solidissima, solumque rivi libramenta habeat fastigata ne minus in centenos pedes semipede eaeque structurae confornicentur, ut minime sol aquam tangat.
In the case of channels, the structure must be on a very solid foundation; the bed of the current must be levelled with a fall of not less than 6 inches in 100 feet. The channels are to be arched over to protect the water from the sun.
final_alignments\Vitruvius_Architecture_Book_8.json