Elementary Principles of FortificationAllen, 1860 - Всего страниц: 235 |
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Часто встречающиеся слова и выражения
12 feet advance annexed diagram army arrangement artillery assailant assault attack banquette bastions batteries besiegers breach bridge caponniere casemates cavalier centre charge command construction counter-forts counterguards counterscarp coupure covered covered-way crest curtain defiladed dimensions direct fire distance DUNCAN FORBES earth elevation embrasures enceinte enemy enemy's enfilade epaulement escarp excavation exposed exterior side faces fascines flanked angle flanking defence foot fortification fortress fougasses front gabions gallery garrison glacis gorge ground guns height howitzers inches India interior slope length loop-holes main ditch masonry Military mortars musketry necessary parapet party perpendicular pickets places of arms plane polygon pontoon portions position powder protected rampart and parapet ravelin re-entering places rear Redan redoubt retrenchment revetment river salient angle sand-bags sappers second parallel secure shells shot shoulder angle siege sorties strong sufficient superior slope tenaille terre-plein thick timber tion trace traverses trench troops trous de loups usually vertical wall yards
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Стр. 210 - OF COMPARISON— is a plan of a fortress, and of the surrounding country, on which are expressed the distances of the principal points from a horizontal plane, imagined to pass through the highest or lowest points of ground, in the survey This imaginary plane is called a plane of comparison. PLANE OF DEFILADE— is a plane supposed to pass through the summit or crest of a work, and parallel to the plane of site.
Стр. 202 - ... trees have been planted all around Fort Alexander ; the roots of which, left in the ground, would defy the ordinary work of sappers and miners ; and would therefore prove formidable obstacles in the process of a regular attack, while the timber would be invaluable in a siege ; (HYDE'S Fortification.) FORTIFICATION (FRONT OF)— consists of all the works constructed upon any one side of a regular polygon, whether placed within or -without the exterior side ; or, according to St. Paul, all the...