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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            <s xml:id="echoid-s8957" xml:space="preserve">
              <pb o="101" file="0435" n="471" rhead="LIVRE IV. DES EDIFICES MILITAIRES."/>
            pouces de large, on le maintient avec des chrochets poſés le long
              <lb/>
            de l’enfaîtement, dont il y en a un ſur chaque chevron: </s>
            <s xml:id="echoid-s8958" xml:space="preserve">l’enfaîte-
              <lb/>
            ment des lucarnes ſe couvre auſſi de plomb de même épaiſſeur,
              <lb/>
            mais pas tout à fait ſi large, puiſqu’il ſuffit qu’il ait 15 pouces; </s>
            <s xml:id="echoid-s8959" xml:space="preserve">ce-
              <lb/>
            lui, que l’on employe pour couvrir les œils de bœuf & </s>
            <s xml:id="echoid-s8960" xml:space="preserve">les nouëds,
              <lb/>
            eſt auſſi de même eſpece.</s>
            <s xml:id="echoid-s8961" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8962" xml:space="preserve">Le plomb pour les cheneaux, que l’on met ſur les enfaîtemens,
              <lb/>
            doit avoir une ligne & </s>
            <s xml:id="echoid-s8963" xml:space="preserve">demi d’épaiſſeur, & </s>
            <s xml:id="echoid-s8964" xml:space="preserve">18 pouces de largeur,
              <lb/>
            & </s>
            <s xml:id="echoid-s8965" xml:space="preserve">celui des bavettes au-deſſus des mêmes cheneaux eſt auſſi de
              <lb/>
            même qualité: </s>
            <s xml:id="echoid-s8966" xml:space="preserve">il faut donner aux cheneaux environ un pouce de
              <lb/>
            pente par toiſe, pour l’écoulement de l’eau, que l’on ſoûtient par
              <lb/>
            des crochets poſés auſſi ſur chaque chevron.</s>
            <s xml:id="echoid-s8967" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8968" xml:space="preserve">Le plomb du tuyau de deſcente doit avoir deux lignes d’épaiſ-
              <lb/>
            ſeur, & </s>
            <s xml:id="echoid-s8969" xml:space="preserve">le tuyau 3 pouces de diamétre, & </s>
            <s xml:id="echoid-s8970" xml:space="preserve">leurs entonnoirs ou hot-
              <lb/>
            tes peſent ordinairement 50 ou 55 livres, & </s>
            <s xml:id="echoid-s8971" xml:space="preserve">l’on ſoûtient cet en-
              <lb/>
            tonnoir & </s>
            <s xml:id="echoid-s8972" xml:space="preserve">ſon tuyau, par des crochets poſés de diſtance en diſtance.</s>
            <s xml:id="echoid-s8973" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8974" xml:space="preserve">Quand on ne veut point faire la dépenſe d’un tuyau pour con-
              <lb/>
            duire les eaux juſqu’en bas, on fait une goûtiere qui porte l’eau
              <lb/>
            environ cinq pieds hors de l’égoût, afin que le pied du mur ne s’en
              <lb/>
            reſſente point; </s>
            <s xml:id="echoid-s8975" xml:space="preserve">cette goûtiere doit être ſoûtenue par une bande
              <lb/>
            de fer.</s>
            <s xml:id="echoid-s8976" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8977" xml:space="preserve">Comme le plomb ſe vend à la livre, l’on ſaura qu’un pied quar-
              <lb/>
            ré ſur une ligne d’épaiſſeur peſe environ 5 livres & </s>
            <s xml:id="echoid-s8978" xml:space="preserve">demi; </s>
            <s xml:id="echoid-s8979" xml:space="preserve">ſur ce
              <lb/>
            principe, il ſera aiſé de connoître le poids des tables de plomb,
              <lb/>
            quand on en ſaura l’épaiſſeur.</s>
            <s xml:id="echoid-s8980" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div406" type="section" level="1" n="92">
          <head xml:id="echoid-head295" style="it" xml:space="preserve">Detail de la Vitrerie.</head>
          <p>
            <s xml:id="echoid-s8981" xml:space="preserve">Le plus beau Verre qui s’employe en France ſe fait dans la
              <lb/>
            Forêt de Leonce, près de Cherbourg en Normandie: </s>
            <s xml:id="echoid-s8982" xml:space="preserve">il ſe vend
              <lb/>
            à la ſomme ou au pannier, qui comprend 24 plats de verre, qui
              <lb/>
            ont 30 ou 32 pouces de diamêtre, & </s>
            <s xml:id="echoid-s8983" xml:space="preserve">le pannier ſe vend preſen-
              <lb/>
            tement ſur les lieux 25 livres, après en avoir valu 50 & </s>
            <s xml:id="echoid-s8984" xml:space="preserve">55 il y
              <lb/>
            a quelques années; </s>
            <s xml:id="echoid-s8985" xml:space="preserve">mais, le Roy en a reglé le prix par un Arrêt
              <lb/>
            rendu en 1724. </s>
            <s xml:id="echoid-s8986" xml:space="preserve">& </s>
            <s xml:id="echoid-s8987" xml:space="preserve">l’a taxé comme je viens de dire à 25 liv.</s>
            <s xml:id="echoid-s8988" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8989" xml:space="preserve">Quand les plats ſont entiers ſans aucun accident, & </s>
            <s xml:id="echoid-s8990" xml:space="preserve">qu’ils ont
              <lb/>
            30 à 32 pouces de diamêtre, on peut en tirer environ 5 pieds
              <lb/>
            quarrés; </s>
            <s xml:id="echoid-s8991" xml:space="preserve">ainſi, un pannier, où il n’y a point de plat rompu, peut
              <lb/>
            fournir 120 pieds.</s>
            <s xml:id="echoid-s8992" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8993" xml:space="preserve">Ce ſont ordinairement les Marchands Verriers, qui ſe chargent
              <lb/>
            de faire voiturer les panniers de verre aux differens endroits où les </s>
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