Bélidor, Bernard Forest de, La science des ingenieurs dans la conduite des travaux de fortification et d' architecture civile

Table of Notes

< >
[Note]
Page: 145
[Note]
Page: 146
[Note]
Page: 146
[Note]
Page: 147
[Note]
Page: 150
[Note]
Page: 152
[Note]
Page: 152
[Note]
Page: 154
[Note]
Page: 155
[Note]
Page: 155
[Note]
Page: 156
[Note]
Page: 157
[Note]
Page: 163
[Note]
Page: 164
[Note]
Page: 166
[Note]
Page: 166
[Note]
Page: 167
[Note]
Page: 167
[Note]
Page: 168
[Note]
Page: 168
[Note]
Page: 169
[Note]
Page: 169
[Note]
Page: 170
[Note]
Page: 170
[Note]
Page: 170
[Note]
Page: 172
[Note]
Page: 172
[Note]
Page: 174
[Note]
Page: 174
[Note]
Page: 209
< >
page |< < (68) of 695 > >|
    <echo version="1.0RC">
      <text xml:lang="fr" type="free">
        <div xml:id="echoid-div127" type="section" level="1" n="81">
          <pb o="68" file="0094" n="96" rhead="LA SCIENCE DES INGENIEURS,"/>
          <p>
            <s xml:id="echoid-s1643" xml:space="preserve">2
              <emph style="sub">0</emph>
            . </s>
            <s xml:id="echoid-s1644" xml:space="preserve">Que les contreforts aux angles ſaillans doivent être redou-
              <lb/>
            blés & </s>
            <s xml:id="echoid-s1645" xml:space="preserve">braſés de part & </s>
            <s xml:id="echoid-s1646" xml:space="preserve">d’autre par raport aux lignes droites qui for-
              <lb/>
              <note position="left" xlink:label="note-0094-01" xlink:href="note-0094-01a" xml:space="preserve">
                <emph style="sc">Fig</emph>
              . 12.</note>
            ment ces angles.</s>
            <s xml:id="echoid-s1647" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1648" xml:space="preserve">3
              <emph style="sub">0</emph>
            . </s>
            <s xml:id="echoid-s1649" xml:space="preserve">Qu’ils ſeront toûjours élevés à plomb à l’extrémité & </s>
            <s xml:id="echoid-s1650" xml:space="preserve">par
              <lb/>
            les côtés, & </s>
            <s xml:id="echoid-s1651" xml:space="preserve">bien liés au corps de la muraille.</s>
            <s xml:id="echoid-s1652" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1653" xml:space="preserve">4
              <emph style="sub">0</emph>
            . </s>
            <s xml:id="echoid-s1654" xml:space="preserve">Que les contreforts ſeront élevés auſſi haut que le cordon;
              <lb/>
            </s>
            <s xml:id="echoid-s1655" xml:space="preserve">ils ſeroient encore meilleurs, ſi on leur donnoit deux pieds de plus
              <lb/>
            pour le ſoûtien du Parapet.</s>
            <s xml:id="echoid-s1656" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1657" xml:space="preserve">5
              <emph style="sub">0</emph>
            . </s>
            <s xml:id="echoid-s1658" xml:space="preserve">Que dans les Ouvrages où le revêtement n’eſt élevé qu’à
              <lb/>
            moitié ou aux trois quarts du Rempart, & </s>
            <s xml:id="echoid-s1659" xml:space="preserve">le ſurplus en gaſons en
              <lb/>
            placage, il faudra régler ſon épaiſſeur comme s’il devoit être élevé
              <lb/>
            en Maçonnerie juſqu’au ſommet du rempart: </s>
            <s xml:id="echoid-s1660" xml:space="preserve">par exemple, ſi on
              <lb/>
            élevoit quinze pieds en gaſon au-deſſus du revêtement, il faudroit
              <lb/>
            augmenter l’épaiſſeur au ſommet de trois pieds, avec cinq qu’elle
              <lb/>
            auroit déja, pour en avoir huit à la naiſſance du gaſon.</s>
            <s xml:id="echoid-s1661" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1662" xml:space="preserve">6
              <emph style="sub">0</emph>
            . </s>
            <s xml:id="echoid-s1663" xml:space="preserve">Qu’il faut augmenter la grandeur & </s>
            <s xml:id="echoid-s1664" xml:space="preserve">la ſolidité des contre-
              <lb/>
            forts à proportion de l’élevation du revêtement: </s>
            <s xml:id="echoid-s1665" xml:space="preserve">par exemple, ſi
              <lb/>
            le revêtement a 35 pieds de haut, ſavoir 20 en revêtement & </s>
            <s xml:id="echoid-s1666" xml:space="preserve">15
              <lb/>
            en gaſon, il faudra y faire les contreforts qui ont été reglés par
              <lb/>
            le Profil de 35 pieds de haut, & </s>
            <s xml:id="echoid-s1667" xml:space="preserve">que le revêtement ait la même
              <lb/>
            épaiſſeur à 20 pieds de haut comme s’il en avoit 35.</s>
            <s xml:id="echoid-s1668" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1669" xml:space="preserve">7
              <emph style="sub">0</emph>
            . </s>
            <s xml:id="echoid-s1670" xml:space="preserve">Que dans les endroits où on fera des Cavaliers comme à
              <lb/>
            Maubeuge, il faudra augmenter le ſommet du Profil d’un demi
              <lb/>
            pied d’épais pour chaque cinq pieds que le Cavalier ſera élevé au-
              <lb/>
            deſſus du revêtement, & </s>
            <s xml:id="echoid-s1671" xml:space="preserve">la ſolidité des contreforts à proportion:
              <lb/>
            </s>
            <s xml:id="echoid-s1672" xml:space="preserve">ce qui doit s’entendre des gros revêtemens de la place, & </s>
            <s xml:id="echoid-s1673" xml:space="preserve">non pas
              <lb/>
            de ceux que l’on fait quelque fois aux Cavaliers, & </s>
            <s xml:id="echoid-s1674" xml:space="preserve">ſeulement quand
              <lb/>
            le pied du Cavalier aproche de trois à quatre toiſes du Parapet.</s>
            <s xml:id="echoid-s1675" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1676" xml:space="preserve">8
              <emph style="sub">0</emph>
            . </s>
            <s xml:id="echoid-s1677" xml:space="preserve">Que les deux dernieres Colomnes de la Table portent en
              <lb/>
            toiſes, pieds, & </s>
            <s xml:id="echoid-s1678" xml:space="preserve">pouces cubes, ce que chaque toiſe courante de
              <lb/>
            tous ces differens Profils en contient, réduction faite des contreforts.</s>
            <s xml:id="echoid-s1679" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1680" xml:space="preserve">9
              <emph style="sub">0</emph>
            . </s>
            <s xml:id="echoid-s1681" xml:space="preserve">Que ces Profils ne ſont propoſés que pour la Maçonnerie
              <lb/>
            qui doit ſoûtenir de grands poids de Terre nouvellement remuée,
              <lb/>
            & </s>
            <s xml:id="echoid-s1682" xml:space="preserve">non pas celle qu’on endoſſe contre la terre vierge, qui ne l’a pas
              <lb/>
            encore été comme ſont la plûpart des revêtemens de Foſſés.</s>
            <s xml:id="echoid-s1683" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1684" xml:space="preserve">Mr. </s>
            <s xml:id="echoid-s1685" xml:space="preserve">de Vauban raporte, à la ſuite de cette Explication, une Table
              <lb/>
            compoſée de pluſieurs Colomnes, où les Dimenſions de chaque
              <lb/>
            Profil particulier qu’on voit contenuës dans la figure, ſont rapor-
              <lb/>
            tées & </s>
            <s xml:id="echoid-s1686" xml:space="preserve">proportionnées à ce qu’il dit, au poids des Terres qu’ils au-
              <lb/>
            ront à ſoûtenir; </s>
            <s xml:id="echoid-s1687" xml:space="preserve">&</s>
            <s xml:id="echoid-s1688" xml:space="preserve">, pour en marquer la bonté, il ajoûte qu’on l’a ex-
              <lb/>
            perimentée ſur plus de 500000 toiſes cubes de Maçonnerie baties
              <lb/>
            à 150 Places fortifiées par les ordres de Loüis le Grand.</s>
            <s xml:id="echoid-s1689" xml:space="preserve"/>
          </p>
        </div>
      </text>
    </echo>
Impressum