Practical Masonry, Bricklaying and Plastering, Both Plain and Ornamental; Containing a New and Complete System of Lines for Stone-Cutting. for the Use of Workmen

Practical Masonry, Bricklaying and Plastering, Both Plain and Ornamental; Containing a New and Complete System of Lines for Stone-Cutting. for the Use of Workmen

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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. 1838 edition. Excerpt: ...section of the arch. As all these sections are symmetrical figures, that is, as one-half is the counterpart of the other, the other half will be readily found without farther instruction. We have nothing more to remark, than that the sections of the side-arches are both pointed, and that each counterpart of the long side-arch is a portion of the arch extending from the one centre to the other of the two diagonal piers. The method of constructing the centres will be shown in the description of the next plate, as also the construction, with revolved surfaces, when the plan is square. The figure here is a groined-vault, consisting of two different surfaces, one revolved and the other cylindric 290. Example 2.--Plate XXIX. n, contains a plan of one of the severies of St. Catherine's Docks, with a plan of the centering for one-quarter of the severy, and the detail of the parts. This construction is more simple than that in the preceding plate, the intrados of the vaulting being entirely formed by surfaces of revolution, of which the axis is the axis of each pillar. In order that the surface of the intrados may be concave at the crown throughout, it will be necessary to have the vertical section through the diagonal of the severy given, as in Plate XXIX. m; and as there are no groined angles, all the sections radiating from the pillar to the summit, will be parts of the diagonal section, and the intersections of the intrados upon the sides of the vaults will, therefore, be Gothic arches. The curves upon each of the two narrow sides will be more pointed than each of the two curves upon the wider sides; but as these are portions of the diagonal curve, it will not be necessary to show how they are traced, since a mould, formed to the diagonal curve, may...show more

Product details

  • Paperback | 118 pages
  • 189 x 246 x 6mm | 227g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123658385X
  • 9781236583857