Introductory essay to the study of fortification by Hector StraithIntroductory essay to the study of fortification by Hector Straith

Introductory essay to the study of fortification

byHector Straith

Paperback | February 2, 2012

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1852. Excerpt: ... Of these, the two first may be considered as especially made for the convenience and use of the inhabitants in their intercourse with the country: and the four last more particularly for the use of the garrison. 138. Of the former, there should be as few as possible, since they entail extra duties on the garrison, requiring constant watching and repair. In places of a small size, and, if possible, in every place, two main passages should be made to suffice; for instance, in fig. 1, Plate I, the opposite fronts, c b and a r, have regular bridges of timber across the ditches; with passages through the ramparts and glacis, which lead to the main roads without: in the centre of the curtain, the rampart has a large vaulted passage, supported on each side by masonry, to form a road sufficiently wide for the passage of carriages, waggons, &c; that is, from 18 to 24 feet wide and 12 feet high: this passes in front, a r, underneath an archway in the scarp revetment, and leads over a bridge, on the same level (that is, the plane of site) to the tenaille: the passage is continued through the parapet of the tenaille, then by a bridge over the main-ditch to the gorge of the ravelin; in like manner, it proceeds through the ravelin, its rampart, and across its ditch by a bridge, (all on the plane of site,) to the covered-way: a winding road is cut through the glacis (to prevent its being enfiladed), which leads to the main roads without. Here it may be observed, that this road, and the bridges it crosses, are fully defended; the main bridge leading from the body of the place to the ravelin is placed between the batteries on the flanks of the two adjoining bastions; as well as exposed to the fire of the tenaille and curtain: the continuation of the road through the ravel...
Title:Introductory essay to the study of fortificationFormat:PaperbackDimensions:70 pages, 9.69 × 7.44 × 0.15 inPublished:February 2, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217854419

ISBN - 13:9780217854412