An Introduction to the History of Structural Mechanics: Part by Edoardo Benvenuto PDF

By Edoardo Benvenuto

ISBN-10: 1461229944

ISBN-13: 9781461229940

ISBN-10: 1461277515

ISBN-13: 9781461277514

This booklet is without doubt one of the most interesting i've got ever learn. to write down a foreword for· it's an honor, tricky to simply accept. we all know that architects and grasp masons, lengthy sooner than there have been mathematical theories, erected buildings of mind-blowing originality, energy, and sweetness. a lot of those nonetheless stand. have been it now not for our now acid surroundings, shall we anticipate them to face for hundreds of years extra. We respect early architects' obvious good fortune within the distribution and stability of thrusts, and we presume that grasp masons had principles, might be held mystery, that enabled them to show architects' daring designs into fact. we all know that rational theories of power and elasticity, created centuries later, have been prompted by way of the wondrous structures that males of the 16th, 17th, and eighteenth centuries observed day-by-day. Theorists recognize that once, ultimately, theories began appearing, architects distrusted them, partially simply because they generally ignored information of significance in genuine development, in part simply because not anyone yet a mathematician may perhaps comprehend the purpose and func­ tion of a mathematical conception designed to symbolize a facet of nature. This booklet is the 1st to teach how statics, energy of fabrics, and elasticity grew along latest structure with its millenial traditions, its host of successes, its ever-renewing types, and its a variety of difficulties of upkeep and service. In reference to experiences towards fix of the dome of St. Peter's by way of Poleni in 1743, on p.

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Extra resources for An Introduction to the History of Structural Mechanics: Part II: Vaulted Structures and Elastic Systems

Sample text

From the memoir of 1712. 334 10. First Theories about the Statics of Arches and Domes geometrically-determined segments. 2) LG: CG = Qc : D. 2) for the case under consideration by taking into account the geometry of the arch, but we need not dwell on this proof. " These include the weight of the lower voussoir I LM, with weight Q~ and the abutment, proportional to by. De la Hire, like his successors, identifies weight with area, taking constant thickness and specific weight for granted, for both the abutment and voussoir.

See A. Buti and M. , Vol. 38 (1981), pp. 303-325. 3. 8. De la Hire's graphic construction for determining the width of the abutment . From the memoir of 1712. " 19 Thus we solve our problem. De la Hire claims that this solution can be generalized to other cases-depressed or pointed arches, flying buttresses, etc. 4), and a simplified version in which the influence of the lower voussoir I LM is transferred by raising the abutment up to the breaking joint. y = 2Qc(eg - fa). 8. As de la Hire explains, Take on LE and on LA two segments LX and LZ equal to the square root of the surface of the arch portion LM F: having drawn Z E we shall draw its parallel X 4 which determines point 4 on LA.

Peter's Dome and the Three Mathematicians During the decade 1740- 1750, a crisis of major proportions erupted in Italian architecture. The dome of St. Peter's Basilica in Rome showed signs of structural damage. Rumor had it that the structure was about to collapse; clearly something had to be done. But what? The matter was hotly debated. The crisis had the effect of galvanizing Italian research on the statics of vaults and domes, which had hitherto been far from active. Note an important difference: work on the first mechanical theories had been theoreticaL 352 11.

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An Introduction to the History of Structural Mechanics: Part II: Vaulted Structures and Elastic Systems by Edoardo Benvenuto

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