TREDGOLD, Thomas.

Practical Essay on the Strength of Cast Iron, and other Metals; intended for the Assistance of Engineers, Iron Masters, Architects, Millwrights, Founders and Others engaged in the Construction of Machines, Buildings, &c. containing Practical Rules, Tables, and Examples; founded on a Series of New Experiments.

Four engraved plates (somewhat browned due to the quality of the paper) & illus. in the text. xix,305, [1] pp. 8vo, attractive antique half-calf & marbled boards (title a little stained in gutter, some foxing), spine gilt. London: J. Taylor, 1824. Second edition, “improved and enlarged.” “This pioneering work on the strength of cast iron ‘contains the results of the author’s experiments and gives many practical rules for designers of cast iron structures.’ Tredgold was the first to introduce a formula for calculating safe stresses for columns. As the use of iron for building increased, this book was widely used and translated into French, Italian, and German. –Timoshenko, 100... “While Pearson finds much to disagree with in this work, he states that one of its paragraphs contains something entirely new: Paragraph 233 on page 121 bears an attempt to determine the position of the neutral line which yields the same result as that obtained by a more accurate method... “The text discusses the properties of iron and provides three tables for different kinds of resistance, with an explanatory section on their use. Further, it discusses the strength of iron beams of various conformations, and gives an account of various experiments on cast iron and on malleable iron and other metals. It continues to give testing results on resistance to torsion and to impulsive force and on the strength of supports compressed or extended along their length.”–Roberts & Trent, Bibliotheca Mechanica, pp. 326-27. Very good copy. Perforated stamp of the Franklin Institute on title. Ex Bibliotheca Mechanica. The first edition appeared in 1822.

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