Author: McCullough, Ernest
First published: N/A
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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.
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
ALL bridge structures belong to one or other of four primary types, the suspension bridge, arch, supported girder and cantilever. Although these primary types have become differentiated into a large number of variations conforming to special requirements dictated by topography of site, exigencies of traffic, properties of materials and possible methods of erection, yet such variants are the outcome of a gradual evolution dating back to pre-historic times.
Professor J. Husband