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475 .194

A TREATISE

ON THE

STRENGTH, FLEXURE, AND STIFFNESS

OF

CAST IRON BEAMS A'ND COLUMNS,

ETC. ETC.

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A

TREATISE

ON THE

STRENGTH, FLEXURE, AND STIFFNESS

OF

CAST IRON BEAMS AND COLUMNS,

SHEWING THEIR FITNESS TO RESIST

TRANSVERSE STRAINS, TORSION, COMPRESSION,

TENSION, AND IMPULSION;

WITH

TABLES OF CONSTANTS,

TO BE USED FOR CALCULATING THE STRENGTH, FLEXURE, AND
STIFFNESS OF SIMILAR BEAMS AND COLUMNS OF WROUGHT
IRON, AND SEVERAL SORTS OF TIMBER GENERALLY
EMPLOYED FOR ARCHITECTURAL AND

MECHANICAL PURPOSES:

TO WHICH IS ADDED,

BY WAY OF APPENDIX,

A COLLECTION OF RULES IN WORDS AT LENGTH,

FOR CALCULATING THE MOST IMPORTANT PRACTICAL CASES INVESTIGATED

IN THE COURSE OF THE WORK, BEING INTENDED AS A GUIDE FOR

THOSE WHO ARE NOT VERSED IN ALGEBRAIC REDUCTIONS.

BY WILLIAM TURNBULL,

LONDON:

JOSIAH 'TAYLOR, ARCHITECTURAL LIBRARY,

59, HIGH HOLBORN.

1832.

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9-29-39 J2

In laying this little work before the public, the Author has to observe, that the plan of it was formed during the period of his employment with Messrs. COTTAM and HALLEN, Winsley Street, Oxford Street, London, where he had frequent occasion to direct his attention to the mode of calculating the strength and deflexion of beams and columns, of various forms and dimensions, cast by them for bearers and supports in buildings and other extensive works. To further his object in this respect, Mr. TREDGOLD's valuable Essay on the Strength of Cast Iron was put into his hand; but not having previously consulted the writings of this eminent author, the aid thus afforded was insufficient for the purpose.

Mr. TREDGOLD enters largely into the detail and comparison of various practical experiments; but from a perusal of these details the writer of this work did not derive the information he wished, the

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