Quodsi non venter in vallibus factus fuerit nec substructum ad libram factum, sed geniculus erit, erumpet et dissolvet fistularum commissuras.
But if the bend is not made use of in the valleys, or if the pipe is not brought up to a level, and there is an elbow, the water will burst through and break the joints of the pipes.
final_alignments\Vitruvius_Architecture_Book_8.json