The Line Of The Arch

Arch Flanagan, 91, is a retired school teacher. In 1943, as a sergeant in the Australian Army, he was forced to labor on the infamous Burma Railway upon which it is said one man died for every sleeper laid. In the 50 years since, Arch has written four separate pieces reflecting on the experience, two short stories, a memoir and an obituary for his commanding officer, Sir Edward "Weary" Dunlop. Martin Flanagan is a poet, writer and a journalist and is the fourth of Arch's six children.

Modern structural engineering surprises us with the mastery and certainty with which it plans and carries out daring projects, such as the most recent metal or concrete bridges, whether they be suspension or arch bridges. On the other hand, little is yet known about the state of knowledge of construction science and techniques which, well before the arrival of modern methods based on the mechanics of deformable continua, made it possible in the past to erect the vaulted masonry structures rthat we have inherited. The fact that these have lasted through many centuries to our time, and are still in a fairly good state of conservation, makes them competitive, as far as stability and durability are concerned, with those constructed in other materials. Although it is known that the equilibrium of the arch is guaranteed by any funicular whatsoever of the loads, contained inside the profile of an arch, finding the unique solution is not such a certainty. In other words, the problem of the equilibrium of vaulted structures is 'Poleni's problem', the one for which the Venetian scientist was able to give an exemplary solution on the occasion of the assessment of the dome of St. Peter's. Arch Bridges focuses on the main aspects of the debate about the masonry arch bridge: History of structural mechanics and construction, theoretical models, analysis for assessment, numerical methods, experimental and non-destructive testing, maintenance and repair are the topics of the Conference. The breadth and variety of the contributions presented and discussed by leading experts from many countries make this volume an authoritative source of up-to-date information.

Depth, perspective of sky and sea, shadows, much more, not usually covered. 391 diagrams, 81 reproductions of drawings and paintings.

Volume 1-35, works. Volume 36-37, letters. Volume 38 provides an extensive bibliography of Ruskin's writings and a catalogue of his drawings, with corrections to earlier volumes in George Allen's Library Edition of the Works of John Ruskin. Volume 39, general index.