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

Table of Notes

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              <pb o="26" file="0470" n="509" rhead="LA SCIENCE DES INGENIEURS,"/>
            Volutes eſt de 2 parties & </s>
            <s xml:id="echoid-s9837" xml:space="preserve">3 quarts vers le devant, & </s>
            <s xml:id="echoid-s9838" xml:space="preserve">elles s’élar-
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            giſſent en dedans, & </s>
            <s xml:id="echoid-s9839" xml:space="preserve">s’éloignent de l’Ove & </s>
            <s xml:id="echoid-s9840" xml:space="preserve">entrent deſſous l’Aba-
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            que; </s>
            <s xml:id="echoid-s9841" xml:space="preserve">ſous les Fleurs regne l’Ove qui ſaille à chaque face de demi
              <lb/>
            partie plus que la courbure de l’Abaque, ce qui eſt pour le Plan.</s>
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          <p>
            <s xml:id="echoid-s9842" xml:space="preserve">La hauteur de ce Chapiteau avec ſes Volutes eſt de 9 parties
              <lb/>
            & </s>
            <s xml:id="echoid-s9843" xml:space="preserve">5 huitiémes des 18 du bas de la Colomne, nous nous ſervons
              <lb/>
            de ces meſures pour faire la diviſion & </s>
            <s xml:id="echoid-s9844" xml:space="preserve">donner les hauteurs des
              <lb/>
            parties. </s>
            <s xml:id="echoid-s9845" xml:space="preserve">L’Abaque a de front un module & </s>
            <s xml:id="echoid-s9846" xml:space="preserve">un tiers, ſa hauteur
              <lb/>
            eſt d’une partie & </s>
            <s xml:id="echoid-s9847" xml:space="preserve">de 5 huitiémes, qui comprennent le Filet & </s>
            <s xml:id="echoid-s9848" xml:space="preserve">le
              <lb/>
            Talon qui a une partie de ſaillie égale à ſa hauteur, ſous l’Aba-
              <lb/>
            que le Liſteau & </s>
            <s xml:id="echoid-s9849" xml:space="preserve">la Volute a une partie, & </s>
            <s xml:id="echoid-s9850" xml:space="preserve">le membre creux de
              <lb/>
            la Volute qui poſe ſur l’Ove une partie & </s>
            <s xml:id="echoid-s9851" xml:space="preserve">demi.</s>
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          <p>
            <s xml:id="echoid-s9852" xml:space="preserve">L’Ove a 2 parties de ce membre creuſé qui eſt à la Volute & </s>
            <s xml:id="echoid-s9853" xml:space="preserve">
              <lb/>
            finit ſur l’Aſtragale qui détermine le haut du Fuſt de la Colomne,
              <lb/>
            il y a un module & </s>
            <s xml:id="echoid-s9854" xml:space="preserve">un neuviéme de diamêtre, l’Aſtragale a une
              <lb/>
            partie de hauteur & </s>
            <s xml:id="echoid-s9855" xml:space="preserve">répond à l’œil de la Volute, le Liſteau au-
              <lb/>
            deſſous a 2 cinquiémes de cette partie, & </s>
            <s xml:id="echoid-s9856" xml:space="preserve">ſes membres doivent
              <lb/>
            être toûjours dégagés des Volutes qui pendent plus bas que le
              <lb/>
            Liſteau de 2 parties 2 cinquiémes.</s>
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          <p>
            <s xml:id="echoid-s9857" xml:space="preserve">Les Volutes depuis le deſſous de l’Abaque ont 8 parties de haut,
              <lb/>
            7 de large, & </s>
            <s xml:id="echoid-s9858" xml:space="preserve">leur épaiſſeur ſous la corne de l’Abaque eſt de 2
              <lb/>
            parties 3 quarts, elles commencent à côté de la Fleur ſur l’Ove & </s>
            <s xml:id="echoid-s9859" xml:space="preserve">
              <lb/>
            ſe vont courber ſous la corne de l’Abaque, l’œil de la Volute qui
              <lb/>
            eſt d’une partie doit être de niveau avec l’Aſtragale; </s>
            <s xml:id="echoid-s9860" xml:space="preserve">dans le milieu
              <lb/>
            de l’œil on fait un quarré plus petit de moitié que le diamêtre & </s>
            <s xml:id="echoid-s9861" xml:space="preserve">
              <lb/>
            parallele aux lignes croiſées: </s>
            <s xml:id="echoid-s9862" xml:space="preserve">les diagonales de ce quarré ſe divi-
              <lb/>
            ſent en 6 parties égales qui font en tout 12 centres pour les tours
              <lb/>
            de la Volute, il faut prendre garde que les centres angulaires
              <lb/>
            ſont éloignés entr’eux d’une demi partie, ceux des lignes du
              <lb/>
            quarré d’un tiers de partie, & </s>
            <s xml:id="echoid-s9863" xml:space="preserve">ainſi la Volute diminue dans les
              <lb/>
            trois tours de ſes 12 quartiers.</s>
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          <p>
            <s xml:id="echoid-s9864" xml:space="preserve">Il y a 4 parties & </s>
            <s xml:id="echoid-s9865" xml:space="preserve">demi depuis le centre de l’œil juſques ſous
              <lb/>
            l’Abaque, & </s>
            <s xml:id="echoid-s9866" xml:space="preserve">4 depuis le centre juſqu’au dehors de la Volute qui
              <lb/>
            eſt à plomb ſous la face de la corne de l’Abaque, il y en a 3 & </s>
            <s xml:id="echoid-s9867" xml:space="preserve">de-
              <lb/>
            mi de ce même centre juſqu’au bas de la Volute; </s>
            <s xml:id="echoid-s9868" xml:space="preserve">ainſi elle di-
              <lb/>
            minuë de 2 parties dans le premier tour, c’eſt-à-dire une demi
              <lb/>
            partie pour chaque quartier; </s>
            <s xml:id="echoid-s9869" xml:space="preserve">& </s>
            <s xml:id="echoid-s9870" xml:space="preserve">dans le tour elle diminuë de 2
              <lb/>
            tiers de parties, c’eſt-à-dire d’un ſixiéme pour chaque quartier,
              <lb/>
            de ſorte que c’eſt 4 parties pour les trois tours qui ſont dans l’eſ-
              <lb/>
            pace contenu depuis le deſſous de l’Abaque juſques ſur l’œil.</s>
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