Fundamentorum autem, si in montibus fuerit, facilior erit ratio; sed si necessitas coegerit in plano aut palustri loco ea constitui, solidationes substructionesque ita erunt faciendae, quemadmodum de fundationibus aedium sacrarum in tertio libro est scriptum.
If the theatre is on a hillside, the construction of the foundations will be easier. But if they have to be laid on level or marshy ground, piles and substructures must be used as we have written in the third book concerning the foundations of temples.
final_alignments\Vitruvius_Architecture_Book_5.json