Alberti, Leon Battista, L' architettura

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            <s xml:id="echoid-s5378" xml:space="preserve">
              <pb o="117" file="121" n="121" rhead="LIBRO QVARTO."/>
            ſieno guaſti. </s>
            <s xml:id="echoid-s5379" xml:space="preserve">Piacerannomi ancora quelli, che ſarãno fatti in cerchio, ſe e’ ſarã
              <lb/>
            no talmente ſpuntati, & </s>
            <s xml:id="echoid-s5380" xml:space="preserve">biſtondati; </s>
            <s xml:id="echoid-s5381" xml:space="preserve">che e’ non ſieno laſciatiottuſi, di maniera,
              <lb/>
            che ſi contrapongino a la moleſta preſtezza, & </s>
            <s xml:id="echoid-s5382" xml:space="preserve">impeto dele onde. </s>
            <s xml:id="echoid-s5383" xml:space="preserve">Harannole
              <lb/>
            Pileragioneuole cantonata ſe ella ſarà in tre quarti d’uno angolo retto; </s>
            <s xml:id="echoid-s5384" xml:space="preserve">& </s>
            <s xml:id="echoid-s5385" xml:space="preserve">ſe que-
              <lb/>
            ſta non ti piaceſsi, fa ch’ella n’habbia duo terzi. </s>
            <s xml:id="echoid-s5386" xml:space="preserve">Et queſto baſti quanto ale Pile.
              <lb/>
            </s>
            <s xml:id="echoid-s5387" xml:space="preserve">
              <note position="left" xlink:label="note-121-01" xlink:href="note-121-01a" xml:space="preserve">5</note>
            Se per natura del luogo noi non haremo, i fianchi de le ripe coſifatti, come de-
              <lb/>
            ſidererẽmo; </s>
            <s xml:id="echoid-s5388" xml:space="preserve">faremoli nel medeſimo modo de le Pile; </s>
            <s xml:id="echoid-s5389" xml:space="preserve">& </s>
            <s xml:id="echoid-s5390" xml:space="preserve">a l’ultimo delleripe, fa-
              <lb/>
            remo altre Pile, & </s>
            <s xml:id="echoid-s5391" xml:space="preserve">tireremoui alcuni archi ne lo ſteſſo aſciutto terreno; </s>
            <s xml:id="echoid-s5392" xml:space="preserve">accioche
              <lb/>
            ſe per auentura per la continouatione de le onde, & </s>
            <s xml:id="echoid-s5393" xml:space="preserve">dele piene, in ſucceſſo di
              <lb/>
            tempo, ſi leuaſſe uia parte de la ripa;</s>
            <s xml:id="echoid-s5394" xml:space="preserve">con l’hauere allungato il Ponte nel terreno,
              <lb/>
              <note position="left" xlink:label="note-121-02" xlink:href="note-121-02a" xml:space="preserve">10</note>
            ti rimanga pur libera la ſtrada. </s>
            <s xml:id="echoid-s5395" xml:space="preserve">Le uolte, & </s>
            <s xml:id="echoid-s5396" xml:space="preserve">gli archi, si percõto dele altre coſe,
              <lb/>
            sì per i crudeli, & </s>
            <s xml:id="echoid-s5397" xml:space="preserve">continoui intronamenti de carri, biſogna che ſieno fortiſsime
              <lb/>
            & </s>
            <s xml:id="echoid-s5398" xml:space="preserve">gagliardiſsime. </s>
            <s xml:id="echoid-s5399" xml:space="preserve">Aggiugni che alcuna uolta hauẽdoſi a tirar ſopra detti Põti
              <lb/>
            peſi ſmiſurati, di Coloſsi, o di Aguglie, o ſimili; </s>
            <s xml:id="echoid-s5400" xml:space="preserve">Non ti interuenga come interuẽ
              <lb/>
            ne a Scauro nel far tirare quella ſoglia di Pietra; </s>
            <s xml:id="echoid-s5401" xml:space="preserve">che i Miniſtri publici, habbino
              <lb/>
              <note position="left" xlink:label="note-121-03" xlink:href="note-121-03a" xml:space="preserve">15</note>
            ad hauer paura de danni fatti. </s>
            <s xml:id="echoid-s5402" xml:space="preserve">Etper queſto conto il Ponte, & </s>
            <s xml:id="echoid-s5403" xml:space="preserve">di diſegno, & </s>
            <s xml:id="echoid-s5404" xml:space="preserve">di
              <lb/>
            ogni ſorte di lauoro, ſi debbe accommodare in modo contro le ſpeſſe, & </s>
            <s xml:id="echoid-s5405" xml:space="preserve">conti-
              <lb/>
            noue ſcoſſe de carri, che e’ duri eternalmente. </s>
            <s xml:id="echoid-s5406" xml:space="preserve">Che i ponti uerrebbono eſſer
              <lb/>
            fatti di pietre molto grandi, & </s>
            <s xml:id="echoid-s5407" xml:space="preserve">ſaldiſsime; </s>
            <s xml:id="echoid-s5408" xml:space="preserve">celo dimoſtra facilmente la ragione,
              <lb/>
            con lo eſſempio de la ancudine; </s>
            <s xml:id="echoid-s5409" xml:space="preserve">la quale ſe in uero è molto grande, & </s>
            <s xml:id="echoid-s5410" xml:space="preserve">graue, ſo-
              <lb/>
              <note position="left" xlink:label="note-121-04" xlink:href="note-121-04a" xml:space="preserve">20</note>
            ſtiene facilmente, i colpi de martegli; </s>
            <s xml:id="echoid-s5411" xml:space="preserve">ma ſe ella è leggiere, riſalta per i colpi, & </s>
            <s xml:id="echoid-s5412" xml:space="preserve">ſi
              <lb/>
            commuoue. </s>
            <s xml:id="echoid-s5413" xml:space="preserve">Noi dicemmo che la Volta era fatta di Archi, & </s>
            <s xml:id="echoid-s5414" xml:space="preserve">di ripieni; </s>
            <s xml:id="echoid-s5415" xml:space="preserve">& </s>
            <s xml:id="echoid-s5416" xml:space="preserve">
              <lb/>
            quello arco eſſer il piuſorte, che era d’un mezzo cerchio: </s>
            <s xml:id="echoid-s5417" xml:space="preserve">ſe per la diſpoſitio-
              <lb/>
            ne de le Pile, il mezzo cerchio ſi rileuerà tanto, che tale rilieuo ti offenda, uſe-
              <lb/>
            remo l’arco ſcemo; </s>
            <s xml:id="echoid-s5418" xml:space="preserve">afforzificati i fianchi de le rìpe, con farli piu groſsi. </s>
            <s xml:id="echoid-s5419" xml:space="preserve">Qua-
              <lb/>
              <note position="left" xlink:label="note-121-05" xlink:href="note-121-05a" xml:space="preserve">25</note>
            lunque arco ſi uoglia finalmente, che harà a ſtare per teſta di eſſe uolte, bi-
              <lb/>
            ſogna che ſia di Pietre duriſsime, & </s>
            <s xml:id="echoid-s5420" xml:space="preserve">grandiſsime; </s>
            <s xml:id="echoid-s5421" xml:space="preserve">non altrimenti che quelle,
              <lb/>
            che tu harai poſte ne le Pile. </s>
            <s xml:id="echoid-s5422" xml:space="preserve">Etin detto arco non ui ſaranno pietre piu ſotti-
              <lb/>
            li che almeno non corriſpondino con la loro groſſezza, a la decima parte de la
              <lb/>
            ſua corda. </s>
            <s xml:id="echoid-s5423" xml:space="preserve">Nè ſarà la corda piu lunga, che per ſei uolte quantoè la groſſez-
              <lb/>
              <note position="left" xlink:label="note-121-06" xlink:href="note-121-06a" xml:space="preserve">30</note>
            za dela pila, nè piu corta che per quattro. </s>
            <s xml:id="echoid-s5424" xml:space="preserve">Et commettinſi inſieme queſte pie
              <lb/>
            tre ad arco con Perni, & </s>
            <s xml:id="echoid-s5425" xml:space="preserve">ſpranghe di Bronzo gagliardiſsime. </s>
            <s xml:id="echoid-s5426" xml:space="preserve">Oltra di que-
              <lb/>
            ſto l’ultima pietra ad arco, che e’ chiamano il ſerraglio, ſarà ridotta da lo ſcar-
              <lb/>
            pello a la miſura de le altre pietre ad arco, & </s>
            <s xml:id="echoid-s5427" xml:space="preserve">ancora da l’una de le teſte ſarà la-
              <lb/>
            ſciata alquanto piu groſſa, acciò non ui ſi poſſa mettere, ſenon per ſorza,
              <lb/>
              <note position="left" xlink:label="note-121-07" xlink:href="note-121-07a" xml:space="preserve">35</note>
            & </s>
            <s xml:id="echoid-s5428" xml:space="preserve">con mazzapichiarla leggiermente. </s>
            <s xml:id="echoid-s5429" xml:space="preserve">Percioche in queſto modo le altre pie-
              <lb/>
            tre ad arco di ſotto, piu riſtrettamente ſerrate inſieme, gagliardamente, & </s>
            <s xml:id="echoid-s5430" xml:space="preserve">
              <lb/>
            lungo tempo ſtaranno ne lo officio loro. </s>
            <s xml:id="echoid-s5431" xml:space="preserve">Tuttii ripieni dentro ſi murino di
              <lb/>
            pietre; </s>
            <s xml:id="echoid-s5432" xml:space="preserve">di maniera che non ſe ne poſſa trouare alcuna piu ſalda, & </s>
            <s xml:id="echoid-s5433" xml:space="preserve">di commet-
              <lb/>
            titure di ſorte, che non ſe ne truoui alcuna piu ſtrettamente congiunta. </s>
            <s xml:id="echoid-s5434" xml:space="preserve">Et ſe-
              <lb/>
              <note position="left" xlink:label="note-121-08" xlink:href="note-121-08a" xml:space="preserve">40</note>
            nèl’fornire iripieni, tu non haueſsi tanta abondantia di pietre forti, non ricuſe-
              <lb/>
            rò de le piu deboli in caſo di neceſsità, pur che per tutta la ſtiena de la uolta nõ
              <lb/>
            ſi meſcoli ne ſerragli coſa alcuna, ſe non Pietre forti. </s>
            <s xml:id="echoid-s5435" xml:space="preserve">Reſtaci a laſtricare tal la-
              <lb/>
            uoro. </s>
            <s xml:id="echoid-s5436" xml:space="preserve">Non ſi debbe manco aſſodar il terreno a ponti, che a le uie da </s>
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