| Title: | Barriers |
| Original Title: | Barrieres |
| Volume and Page: | Vol. 2 (1752), p. 95 |
| Author: | Guillaume Le Blond (biography) |
| Translator: | Eirill Alvilde Falck [North Park University] |
| Subject terms: |
Fortifications
|
| Original Version (ARTFL): | Link |
| Rights/Permissions: |
This text is protected by copyright and may be linked to without seeking permission. Please see http://quod.lib.umich.edu/d/did/terms.html for information on reproduction. |
| URL: | http://hdl.handle.net/2027/spo.did2222.0002.823 |
| Citation (MLA): | Le Blond, Guillaume. "Barriers." The Encyclopedia of Diderot & d'Alembert Collaborative Translation Project. Translated by Eirill Alvilde Falck. Ann Arbor: Michigan Publishing, University of Michigan Library, 2015. Web. [fill in today's date in the form 18 Apr. 2009 and remove square brackets]. <http://hdl.handle.net/2027/spo.did2222.0002.823>. Trans. of "Barrieres," Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers, vol. 2. Paris, 1752. |
| Citation (Chicago): | Le Blond, Guillaume. "Barriers." The Encyclopedia of Diderot & d'Alembert Collaborative Translation Project. Translated by Eirill Alvilde Falck. Ann Arbor: Michigan Publishing, University of Michigan Library, 2015. http://hdl.handle.net/2027/spo.did2222.0002.823 (accessed [fill in today's date in the form April 18, 2009 and remove square brackets]). Originally published as "Barrieres," Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers, 2:95 (Paris, 1752). |
Barriers, in terms of Fortification , are types of doors made in a passage or entrenchment, in order to defend its entrance, and facilitate exit from it.
Barriers are generally made of tall poles approximately four to five feet in length placed ten feet apart from one another, with crossing joists to prevent horses and men from forcing their way in. In the middle is a wooden bar that can be moved, and that can be opened and closed as desired. The barriers that close the doors or the opening of the lines of circumvallation are balanced by turning on a beam, of which the peak is sharpened into a fulcrum, is placed at the middle, where it shares the opening into two equal passages. This balance beats against the other two poles planted at the two extremities of the passages, with footed notches, to which it hangs and closes with a flat ankle. TraiteÏ de l'attaque des places by Vauban. [1]
Note
1. TraiteÏ de l'attaque des places by SeÏbastien Le Prestre de Vauban (1633-1707).