In quibus autem locis pulvis non nascitur, his rationibus erit faciendum, uti arcae duplices relatis tabulis et catenis conligatae in eo loco, qui finitus erit, constituantur, et inter destinas creta in eronibus ex ulva palustri factis calcetur.
Where, however, the earth in question is not found, we must proceed as follows. Double cofferdams bound together with planks and chains are to be put in the place marked out. Between the supports, clay in hampers made of rushes is to be pressed down.
final_alignments\Vitruvius_Architecture_Book_5.json