Engineering Wonders of the World
Volume I

År: 1945

Serie: Engineering Wonders of the World

Sider: 448

UDK: 600 Eng -gl.

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432 ENGINEERING WONDERS OF THE WORLD. The thinness of the walls (nowhere exceeding 6 inches) and floors and the slenderness of the columns have enabled the architect to take the fullest advantage of the space avail- able. The strength of the floors and columns is enormous, and gives a very liberal “ factor of safety.” Finally, if fire should, attack the inflam- mable postal matter which will be sorted in these offices, the actual structure would suffer a minimum of damage, as the steel rods upon which it depends for its stiffness could hardly be affected through their protective coat of concrete. In short, the new General Post Office build- ings afford one of the finest examples of a type of construction which appears to be capable of almost indefinite development. Note.__Thanks are, due to Messrs. L. G. Mouchel and Partners, the Consulting Engineers to H.M. Office of Works in respect of the General Post Office Extension, for their courtesy in supplying the Photographic Illustrations which accompany this article. Fig. 36.---AN ARTIFICIAL ISLAND, DESIGNED BY MESSRS. HENNEBIQUE AND THE SCHNEIDER COM- PANY FOR USE AS A TORPEDO-TESTING BATTERY IN THE MEDITERRANEAN. This view shows the battery afloat, and being towed to its present situation in the roads of Hyéres, where it was sunk n a nrenared foundation in 50 feet of water. Fig. 37.—BALLROOM AT THE -FRENCH EMBASSY, LONDON, ILLUSTRATING THE ADAPTABILITY OF FERRO-CONCRETE TO DECORATIVE WORK. (Photo, Messrs. Mouchel and Partners.)