The new method of fortification, as practised by Monsieur de Vauban, Engineer General of France with an explication of all terms appertaining to that art / made English.

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Title: The new method of fortification, as practised by Monsieur de Vauban, Engineer General of France with an explication of all terms appertaining to that art / made English.
Author: Vauban, Sébastien Le Prestre de, 1633-1707.
Publication: London :: Printed for Abel Swall ...,; 1691.
Rights/Permissions: To the extent possible under law, the Text Creation Partnership has waived all copyright and related or neighboring rights to this keyboarded and encoded edition of the work described above, according to the terms of the CC0 1.0 Public Domain Dedication (http://creativecommons.org/publicdomain/zero/1.0/). This waiver does not extend to any page images or other supplementary files associated with this work, which may be protected by copyright or other license restrictions. Please go to http://www.textcreationpartnership.org/ for more information.
Subject terms: Fortification -- Early works to 1800.; Geometry -- Early works to 1800.
Link to this Item: http://name.umdl.umich.edu/A47731.0001.001
Cite this Item: "The new method of fortification, as practised by Monsieur de Vauban, Engineer General of France with an explication of all terms appertaining to that art / made English." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A47731.0001.001. University of Michigan Library Digital Collections. Accessed June 18, 2024.

Pages

CHAP. XVI. Of the Structure of a Pentagon.

	Fathoms.	Feet.
1. THe Semi-diameter	153	01
2. The Exterior side AB•• CDJ.	180	02
3. The Perpendicular EF.	25	00
4. The Face AF.	50	00
5. For the Complement of the Line of Defence FG. take	38	03
6. The Line of Defence GB.	131	03
7. The Flank JG.	22	02
8. The Curtain GH.	73	04

Page 51

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The Explication of this Table.

SEe Chap. 2. Book 3. There you shall find all that is ne∣cessary for the Structure of a Pentagon; provided you take the Distances prescribed here, for those that are men∣tioned in the same place. See the Plate F. Fig. 16.

Of the Structure of a Tenaille in the Moat.

TO justifie what has been said above of the Line of De∣fence, observe this Work, the Structure of which is thus.

1. Put the Rule upon the advanced Flank of the Body of the place, and draw a Parallel to that Flank of from 5 to 6 Fathoms, which touches the Line of Defence before the Orillon in EB.
2. Divide the rest of the Line of Defence from BE. to the nearest Angle C, into two equal parts, as BF. EG.
3. Take the Distance FG, between the points of the Compass, leaving one upon the point F: Carry the other from the point G upon the Complement of the Line of De∣fence, mnrk••d F. Then fix one point of the Compass up∣on the point G. and carry the other from F. upon the other opposite Complement, mark'd H. Then joyn HF and JG together, to form the Flanks: Do the same for the Curtain HJ.
4. Draw the Base of the Rampart of 8 Fathoms to the Faces, and to the Flanks of the Tenaille; and to the Curtain from 4 to 5 Fathoms. Then the Base of the Para∣pet of 2 Fathoms 3 Feet round about. You shall make the 2 Banquets as usually. See the Plate M, Fig. 16.