The builder's dictionary, or, Gentleman and architect's companion : explaining not only the terms of art in all the several parts of architecture, but also containing the theory and practice of the various branches thereof ... : also necessary problems in arithmetic, geometry, mechanics, perspective, hydraulics, and other mathematical sciences : together with the quantities proportions, and prices of all kinds of materials used in building ... (1734)
Toms, W. H. (William Henry), ca. 1700-ca. 1750, Devoto, John, fl. 1719-1752 · London : Printed for A. Bettesworth and C. Hitch ..., and S. Austen ... · leaf 35
iL^^-iVo»£and C^^/*-trels: The Key- Stone is that■which is the very Summity orTop of the Arch, and is equal-ly ditfant from both Ends ; andthe Breadth of this Key-Stone atthe Top, ought to be equal tothe Height of the Arch (whichis ufually about fourteen Inches,when made of Brick;) and J//«z-tncr^… … and as high as you defign the Arch fhall rife, and draw the The Key-Stone ought to be fo Line CD parallel to AB, which much without the Arch, asthe Chaptrels projciSl over theJuumhs. The Chaptrels.^ I fuppofe to bethe fame that moft Architectscall Impolls ; and tis thofe onwhich the Feet of the…
Architecture · Building
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