On Architecture

Vitruvius Pollio

Vitruvius Pollio, creator; Morgan, M. H. (Morris Hicky), 1859-1910, translator

5. Between the two peristyles and the guests' apartments are the passage-ways called “mesauloe,” because they are situated midway between two courts; but our people called them “andrones.” This, however, is a very strange fact, for the term does not fit either the Greek or the Latin use of it. The Greeks call the large

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rooms in which men's dinner parties are usually held a)ndrw=nes, because women do not go there. There are other similar instances as in the case of “xystus,” “prothyrum,” “telamones,” and some others of the sort. As a Greek term, custo/s means a colonnade of large dimensions in which athletes exercise in the winter time. But our people apply the term “xysta” to uncovered walks, which the Greeks call paradromi/des. Again, pro/qura, means in Greek the entrance courts before the front doors; we, however, use the term “prothyra” in the sense of the Greek dia/qura.

6. Again, figures in the form of men supporting mutules or coronae, we term “telamones”—the reasons why or wherefore they are so called are not found in any story—but the Greeks name them a)/tlantes. For Atlas is described in story as holding up the firmament because, through his vigorous intelligence and ingenuity, he was the first to cause men to be taught about the courses of the sun and moon, and the laws governing the revolutions of all the constellations. Consequently, in recognition of

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this benefaction, painters and sculptors represent him as holding up the firmament, and the Atlantides, his daughters, whom we call “Vergiliae” and the Greeks *pleia/des, are consecrated in the firmament among the constellations.

7. All this, however, I have not set forth for the purpose of changing the usual terminology or language, but I have thought that it should be explained so that it may be known to scholars. I have now explained the usual ways of planning houses both in the Italian fashion and according to the practices of the Greeks, and have described, with regard to their symmetry, the proportions of the different classes. Having, therefore, already written of their beauty and propriety, I shall next explain, with reference to durability, how they may be built to last to a great age without defects.

1. HOUSES which are set level with the ground will no doubt last to a great age, if their foundations are laid in the manner which we have explained in the earlier books, with regard to city walls and theatres. But if underground rooms and vaults are intended, their foundations ought to be thicker than the walls which are to be constructed in the upper part of the house, and the walls, piers, and columns of the latter should be set perpendicularly over the middle of the foundation walls below, so that they may have solid bearing; for if the load of the walls or columns rests on the middle of spans, they can have no permanent durability.

2. It will also do no harm to insert posts between lintels and sills where there are piers or antae; for where the lintels and beams have received the load of the walls, they may sag in the middle, and gradually undermine and destroy the walls. But

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when there are posts set up underneath and wedged in there, they prevent the beams from settling and injuring such walls.

3. We must also manage to discharge the load of the walls by means of archings composed of voussoirs with joints radiating to the centre. For when arches with voussoirs are sprung from the ends of beams, or from the bearings of lintels, in the first place they will discharge the load and the wood will not sag; secondly, if in course of time the wood becomes at all defective, it can easily be replaced without the construction of shoring.

4. Likewise in houses where piers are used in the construction, when there are arches composed of voussoirs with joints radiating to the centre, the outermost piers at these points must be made broader than the others, so that they may have the strength to resist when the wedges, under the pressure of the load of the walls, begin to press along their joints towards the centre, and thus to thrust out the abutments. Hence, if the piers at the ends are of large dimensions, they will hold the voussoirs together, and make such works durable.