Vitruvius Pollio, I dieci libri dell?architettura, 1567

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    <archimedes>
      <text>
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          <chap>
            <subchap1>
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                <p type="main">
                  <s id="s.005226">
                    <pb pagenum="269" xlink:href="045/01/283.jpg"/>
                    <emph type="italics"/>
                  tenate le tauole ſermamente, & otturate le commiſſure a forza ſi manderanno i fondo, & ìui ſi
                    <lb/>
                  teniranno ferme, & immobili. </s>
                  <s id="s.005227">oltra di queſto lo ſpacio rinchiuſo tra li caſſoni, ſi uuotera con ruo­
                    <lb/>
                  te, & altre machine da leuar l'acque, delle quali Vitr. ne ragiona nel decimo libro, & ſi ſarà il
                    <lb/>
                  luogo piano egualmente, & netto. </s>
                  <s id="s.005228">& ſtando ſopra trauicelli, o palate, o zatte commodamente, or­
                    <lb/>
                  dinate queſte coſe meſcolate, & impaſtate nella foſſa, doue hauerai preparata la ſopra detta ma­
                    <lb/>
                  teria de cementi, & delle pietre, & di tutto quel corpo cauato dalla foſſa empirai tutto quello ſpa­
                    <lb/>
                  cio purgato, che è tra i caſſoni, & in queſto modo farà una preſa mirabile, & riuſcià l'opera
                    <lb/>
                  fatta nell'acqua, & queſto farai quando niuna forza di acqua t'impedirà. </s>
                  <s id="s.005229">ma quandolo impeto
                    <lb/>
                  del mare ti ſturbaſſe, odi quello che dice Vitr.
                    <emph.end type="italics"/>
                  </s>
                </p>
                <p type="main">
                  <s id="s.005230">Ma ſe per lo corſo, & per la forza dello aperto mare, non ſi potranno tenere a fondo i
                    <lb/>
                  caſſoni giu mandati, allhora ſubito ſopra l'orlo, & gengiua del mate doue termina il ter­
                    <lb/>
                  reno, egli ſi deue fare un letto fermiſsimo, ilquale ſia piano meno della metà, ma il reſtan
                    <lb/>
                  te che è proſsimo al lito ſia pendte, et chino, dapoi uerſo l'acqua, & da i lati intorno al det
                    <lb/>
                  to letto ſi facciano i margini, & le ſponde a liuello di quel piano, & quello, che è laſciato
                    <lb/>
                  pendente oltra la metà ſia empito di arena tanto, che egli ſia pare al margine & al piano del
                    <lb/>
                  letto. </s>
                  <s id="s.005231">& ſopra quel piano ſia fabricato uno pilaſtro grande, & fatto, che egli ſia, accioche
                    <lb/>
                  ſi poſſa ſeccarlo, & far preſa biſogna laſciarlo per due meſi, dapoi ſia tagliato di ſotto
                    <lb/>
                  quel margine, che ſoſtenta l'arena, & coſi l'arena ſommerſa dall'acqua farà cadere quel
                    <lb/>
                  pilaſtro nel mare, & con queſta ragione richiedendo il biſogno ſi potrà andare inanzi fa­
                    <lb/>
                  bricando nell'acque. </s>
                </p>
                <p type="main">
                  <s id="s.005232">
                    <emph type="italics"/>
                  Per fare un braccio ſul mare comincia a poco a poco da terra, & farai un ſcagno parte a li­
                    <lb/>
                  uello, parte che habbia caduta: & ſia la parte, che pende uerſo il lito. </s>
                  <s id="s.005233">allo ſcagno farai i ſuoi mar
                    <lb/>
                  gini ouero ſponde nella teſta uerſo il mare, & da i lati a liuello di quello, & la parte, che pende
                    <lb/>
                  empirai d'arena pareggiandola alla parte piana. </s>
                  <s id="s.005234">ſopra lo ſcagno farai uno groſſo pilaſtro della
                    <lb/>
                  detta materia, & lo laſciarai far preſa et ſeccare almeno per due meſi. </s>
                  <s id="s.005235">Taglierai poſcia il mar­
                    <lb/>
                  gine di ſotto, & ſubito uederai uſeire l'arena per la rottura, & mancare di ſotto al pilaſtro, il­
                    <lb/>
                  quale non potendo ſtare, di neceſſità caderà nell'acqua, & empira la prima parte proſſima al li­
                    <lb/>
                  to. </s>
                  <s id="s.005236">& coſi uolendo andar piu in fuori, andarai di mano in mano, & queſto ſi farà, non man­
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                  cando la pozzolana, o ſimil coſa, che fa preſa nel mare. </s>
                  <s id="s.005237">Ma quando ti mancaſſe queſta ma­
                    <lb/>
                  teria dice Vitru.
                    <emph.end type="italics"/>
                  . Ma in quei luoghi doue non naſce la polue, con queſta ragione dei fabricare</s>
                </p>
                <p type="main">
                  <s id="s.005238">poner ſi
                    <lb/>
                  deono la doue ha deliberato di fondare i caſſoni do ppij intauolati, & concatenati, & tra
                    <lb/>
                  l'uno, & l'altro ſia calcata la creta inſieme con i ſacconi fatti d'alica paluſtre, & poi che
                    <lb/>
                  coſi ſarà molto bene calcato, & ſodiſsimamente ripieno quel luogo di mezo tra il doppio
                    <lb/>
                  tauolato, allhora il luogo di mezo tra quel ſerraglio deue eſſer uuotato con ruote, con
                    <lb/>
                  timpani, & con altri ſtrumenti da cauar'acqua, & iui poi tra quella chiuſa ſiano cauate
                    <lb/>
                  le fondamenta. </s>
                  <s id="s.005239">& ſe iui ſarà il terreno buono ſiano cauate piu groſſe del muro, che ui an­
                    <lb/>
                  derà ſopra fino al uiuo, & empite di cementi, calce, & arena. </s>
                  <s id="s.005240">Ma ſe'l luogo ſarà molle, ſia
                    <lb/>
                  battuta la palificata di pali d'alno, di oliuo ſilueſtre, ouero di rouere bruſtolati, & em­
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                  pito di carboni, ſecondo, che detto hauemo, nel fondare de i Theatri, & delle mura. </s>
                  <s id="s.005241">Indi
                    <lb/>
                  poi ſia tirata la cortina del muro di ſaſſo quadrato con lunghiſsima legatura, accioche ſpe
                    <lb/>
                  cialmente le pietre di mezo ſiano beniſsimo contenute. </s>
                  <s id="s.005242">& allhora quel luogo, che ſarà tra'l
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                  muro, ſia riempito di roinazzo, ouero di muratura, perche a queſto modo egli ſtarà ſi for­
                    <lb/>
                  te, che ſi potrà fabricarui ſopra una torre. </s>
                </p>
                <p type="main">
                  <s id="s.005243">
                    <emph type="italics"/>
                  A me pare, che Vitr. ſi laſcia intendere, & Leone nel decimo parla diffuſamente del modo di
                    <lb/>
                  fare le cataratte, gli argini, le palificate, i ſoſtegni, le roſte, le botte per tenere, chiudere, con­
                    <lb/>
                  durre, & diſtornar le acque, perche ſi poſſa fabricare, o ſi rimedi al danno, o ſi prouedi al commo­
                    <lb/>
                  do. </s>
                  <s id="s.005244">pero ci rimettemo alla diligenza ſua.
                    <emph.end type="italics"/>
                  </s>
                </p>
              </subchap2>
            </subchap1>
          </chap>
        </body>
      </text>
    </archimedes>
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