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PREFACE
CHAPTER I: THE EDUCATION OF THE ARCHITECT
CHAPTER II: THE FUNDAMENTAL PRINCIPLES OF ARCHITECTURE
CHAPTER III: THE DEPARTMENTS OF ARCHITECTURE
CHAPTER IV: THE SITE OF A CITY
CHAPTER V: THE CITY WALLS
CHAPTER VI: THE DIRECTIONS OF THE STREETS; WITH REMARKS ON THE WINDS
CHAPTER VII: THE SITES FOR PUBLIC BUILDINGS
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BOOK I
BOOK II
BOOK III
BOOK IV
BOOK V
BOOK VI
BOOK VII
BOOK IX
3. The thickness of the wall should, in my opinion, be such that armed men meeting on top of it may pass one another without interference. In the thickness there should be set a very close succession of ties made of charred olive wood, binding the two faces of the wall together like pins, to give it lasting endurance. For that is a material which neither decay, nor the weather, nor time can harm, but even though buried in the earth or set in the water it keeps sound and useful forever. And so not only city walls but substructures in general and all walls that require a thickness like that of a city wall, will be long in falling to decay if tied in this manner.
Vitruvius: The Ten Books on Architecture. Vitruvius. Morris Hicky Morgan. Cambridge: Harvard University Press. London: Humphrey Milford. Oxford University Press. 1914.
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