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File:L'art de fortifier, de defendre, et d'attaquer les places - suivant les methodes françoises, hollandoises, italiennes and espagnoles, le tout enrichy de figures en taille douce (1677) (14784733505).jpg

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Identifier: lartdefortifierd00dech (find matches)
Title: L'art de fortifier, de defendre, et d'attaquer les places : suivant les methodes françoises, hollandoises, italiennes & espagnoles, le tout enrichy de figures en taille douce
Year: 1677 (1670s)
Authors: Dechales, Claude-François Milliet, 1621-1678
Subjects: Fortification Military art and science
Publisher: A Paris : Chez Estienne Michallet ...
Contributing Library: Getty Research Institute
Digitizing Sponsor: Getty Research Institute

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ntquatre-vingt- fix, qui fcroient quatre De-mi-gorges chacune de 21- toifes. On en peut donc retrancher quelque chofe. Lau-tre cofté C D eft de cent une, dont ayantpris foixante & douze pour la Courtine, reftent trente-neuf, qui font 14 — pour chaque Demi-gorge^ ce qui neft pas afTez,Il faut au(Tî corriger les Angles, éc au lieudes Angles aigus A &: B, faire des An-gles droits. Prenez donc E F de centvingttoifes ;, lailTant de cofté & dautre les li-gnes égales A F, EB, chacune de dix-neuf toifes. Tuez en fuite les perpendicu-laires EHj F G, qui aegrandiflbnt la li-gne C D. Ainfî A L 5 B K fervent pourfaces des Baftions : les lignes A B, CDdemeurent entièrement , en forte que files murailles eftoient déjà bafties, & aiïezfortespour fervir dechemife au Rempart,il ne feroit pas neceffaite den faire dau-tres. PROPOSITION Xïl.Tonifier un A^gC aigft. P/ 5S. T ^ première façon de fortifier unAn-/^.?8, JL-rgle aigu, eft de le changer3 ce qui 3 çTlanche J22^ ^^2
Text Appearing After Image:
i^ïS^^A Livre ijuatrieme. %î^ fc peut faire aifément en plufieurs ma-nières. Qu^onpropofe, par exemple, len-ceinte ABC, qui a TAngle ABC fortaigu : le moyen le plus facile pour cor-riger ce défautj feroit de le retrancher,tirant la ligne A C, pourveu quelle nefurpafTe pas de beaucoup cent vingt toi-fcs. Car ayant retranche de cofté & dau-tre des Demi-gorges , chacune de vingt-deux ou vingt trois toifes, il nenrefte-roit que foixante & quatorze pour laCourtine, qui feroit une longueur rai-fonnable. Qlie fi la ligne AC eft tropgrande, on peut faire lAngle AGC ob-tus 5 & capable de Fortification. Si lAngle AB C a au moins foixantedegrez , vous pouvez vous en fervir >pour former un Baftion H I B K L. On peut encore le feparer de la Ville ,bc le faire fervir ou de Ravelin, ou de De-mi-lune. PROPOSITION XIII.Antre correction dun Angle aigufnUlant» Uon propofe à fortifier lAngle ai^u p/.j^. o B A C : on peut fe retirer en arrière, fiz.99»&former une Tenaille D F

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  • bookid:lartdefortifierd00dech
  • bookyear:1677
  • bookdecade:1670
  • bookcentury:1600
  • bookauthor:Dechales__Claude_Fran__ois_Milliet__1621_1678
  • booksubject:Fortification
  • booksubject:Military_art_and_science
  • bookpublisher:A_Paris___Chez_Estienne_Michallet____
  • bookcontributor:Getty_Research_Institute
  • booksponsor:Getty_Research_Institute
  • bookleafnumber:386
  • bookcollection:getty
  • bookcollection:americana
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30 July 2014
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