The Erection of Bridges

British Honduras Timbers. SUMMARY OF THE RESULTS OF THE EXAMINATION AT THE IMPERIAL INSTITUTE OF SANTA MARIA WOOD (CALOPHYLLUM CALABA). West Indian boxwood is not the same species as true boxwood. The Jamaica boxwood is as hard as inferior qualities of true boxwood, and is used for similar purposes. H.D. Searles-Wood

IN 1883 the first edition of Kidder’s Architects’ and Builders’ Handbook appeared. It was then called a pocket-book, and could be carried in a coat pocket of ordinary size. The seventeenth edition, 1921, is more than three times as thick, although it is printed on thinner paper in smaller type. In the 1906 edition the following statement, appeared in the Preface: “At the time the first edition was written, the term ‘Architectural Engineering’ had not been used in the present application, and the term ‘Structural Engineering,’ when used, referred almost exclusively to bridge work." Ernest McCullough

EVERY engineer, and every architect knows the value of the factor of safety in modern building. It is the wise precaution the constructive mind takes against the failure of matter in fulfilling its purpose. It may be only an approximation. Safety is so important that no one dare stress his material to its ultimate limit. Some factor of safety is an undisputed truth to the rational mind. There is another factor that is at least of equal importance. We have many vague notions about it; many fallacies; much discussion; but no fundamental and obvious truth that is self-evident to the rational mind. James O'Hanlon Hughes