Bion, Nicolas, Traité de la construction et principaux usages des instruments de mathématique, 1723

Table of Notes

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              <pb o="172" file="186" n="186" rhead="CONSTRUCT. ET USAGES DES INSTRUMENS"/>
            vrages qui compoſent la Fortification. </s>
            <s xml:id="echoid-s5554" xml:space="preserve">Figure premiere.</s>
            <s xml:id="echoid-s5555" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5556" xml:space="preserve">Le profil repreſente les principaux traits qui paroîtroient ſur
              <lb/>
            une ſurface plane qui couperoit verticalement, & </s>
            <s xml:id="echoid-s5557" xml:space="preserve">ſepareroit par le
              <lb/>
            milieu tous ces mêmes ouvrages. </s>
            <s xml:id="echoid-s5558" xml:space="preserve">Pour le tracer on a coûtume de
              <lb/>
            ſe ſervir d'une plus grande Echelle que celle du Plan, afin d'y
              <lb/>
            pouvoir mieux diſtinguer leurs largeurs & </s>
            <s xml:id="echoid-s5559" xml:space="preserve">leurs hauteurs ou pro-
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            fondeurs, comme il paroît par la figure 3.</s>
            <s xml:id="echoid-s5560" xml:space="preserve"/>
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        </div>
        <div xml:id="echoid-div450" type="section" level="1" n="215">
          <head xml:id="echoid-head328" style="it" xml:space="preserve">Noms des principales lignes & des principaux angles qui
            <lb/>
          forment le Plan.</head>
          <p>
            <s xml:id="echoid-s5561" xml:space="preserve">LA ligne AB ſe nomme côté exterieur du Polygone.
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            </s>
            <s xml:id="echoid-s5562" xml:space="preserve">
              <note position="left" xlink:label="note-186-01" xlink:href="note-186-01a" xml:space="preserve">Planche
                <lb/>
              A.
                <lb/>
              Fig. 1.</note>
            </s>
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          <p>
            <s xml:id="echoid-s5563" xml:space="preserve">LE, côté interieur du Polygone.</s>
            <s xml:id="echoid-s5564" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5565" xml:space="preserve">LG, demie gorge du Baſtion, dont E G eſt le flanc, A E la fa-
              <lb/>
            ce, & </s>
            <s xml:id="echoid-s5566" xml:space="preserve">A L la capitale.</s>
            <s xml:id="echoid-s5567" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5568" xml:space="preserve">G H eſt la courtine, & </s>
            <s xml:id="echoid-s5569" xml:space="preserve">A H, ligne de défenſe razante.</s>
            <s xml:id="echoid-s5570" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5571" xml:space="preserve">La ſigure A L G E repreſente un demi-Baſtion.</s>
            <s xml:id="echoid-s5572" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5573" xml:space="preserve">L'Angle ANB eſt l'angle du Centre.</s>
            <s xml:id="echoid-s5574" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5575" xml:space="preserve">L'Angle KAB, l'angle du Polygone.</s>
            <s xml:id="echoid-s5576" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5577" xml:space="preserve">L'Angle IAE fait des deux faces, s'appelle Angle flanqué,
              <lb/>
            ou Angle du Baſtion.</s>
            <s xml:id="echoid-s5578" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5579" xml:space="preserve">L'Angle AEG fait de la face & </s>
            <s xml:id="echoid-s5580" xml:space="preserve">du flanc, ſe nomme Angle
              <lb/>
            de l'Epaule.</s>
            <s xml:id="echoid-s5581" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5582" xml:space="preserve">L'Angle EGH fait du flanc & </s>
            <s xml:id="echoid-s5583" xml:space="preserve">de la courtine, ſe nomme An-
              <lb/>
            gle du flanc.</s>
            <s xml:id="echoid-s5584" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5585" xml:space="preserve">L'Angle EGB fait du flanc & </s>
            <s xml:id="echoid-s5586" xml:space="preserve">de la ligne de défenſe razante,
              <lb/>
            ſe nomme Angle flanquant intérieur.</s>
            <s xml:id="echoid-s5587" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5588" xml:space="preserve">L'Angle EDF fait par les deux Razantes qui s'entre-coupent
              <lb/>
            vers le milieu de la Courtine, s'appelle Angle flanquant extérieur,
              <lb/>
            ou Angle de Tenaille.</s>
            <s xml:id="echoid-s5589" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5590" xml:space="preserve">L'Angle EAG fait de la Courtine & </s>
            <s xml:id="echoid-s5591" xml:space="preserve">de la ligne de défenſe ra-
              <lb/>
            zante, s'appelle Angle diminuë. </s>
            <s xml:id="echoid-s5592" xml:space="preserve">Cet Angle eſt toûjours égal à
              <lb/>
            celui qui eſt fait de la face du Baſtion & </s>
            <s xml:id="echoid-s5593" xml:space="preserve">de la Baſe, ou du côté
              <lb/>
            extérieur.</s>
            <s xml:id="echoid-s5594" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div452" type="section" level="1" n="216">
          <head xml:id="echoid-head329" style="it" xml:space="preserve">Maximes fondamentales de la Fortification</head>
          <p>
            <s xml:id="echoid-s5595" xml:space="preserve">CEs principales Maximes ſe peuvent reduire à ſix.</s>
            <s xml:id="echoid-s5596" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5597" xml:space="preserve">La premiere eſt, qu'il n'y ait aucun endroit dans le contour
              <lb/>
            d'une Place qui ne ſoit flanqué ou défendu des flance; </s>
            <s xml:id="echoid-s5598" xml:space="preserve">parce que
              <lb/>
            s'il y avoit quelque endroit autour d'une Place, qui ne fut pas vû
              <lb/>
            & </s>
            <s xml:id="echoid-s5599" xml:space="preserve">défendu par les Aſſiegez, l'Ennemi pourroit s'y mettre à cou-
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            </s>
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