Online Encyclopedia

Search over 40,000 articles from the original, classic Encyclopedia Britannica, 11th Edition.

BUTTRESS (from the O. Fr. bouteret, t...

Online Encyclopedia
Originally appearing in Volume V04, Page 892 of the 1911 Encyclopedia Britannica.
Spread the word: del.icio.us del.icio.us it!

See also:

BUTTRESS (from the O. Fr. bouteret, that which bears a thrust, from bouter, to push, cf. Eng. " See also:butt " and " See also:abutment ")  , See also:masonry projecting from a See also:wall, provided to give additional strength to the same, and also to resist the thrust of the roof or wall, especially when concentrated at any one point . In See also:Roman See also:architecture the plans of the See also:building, where the vaults were of considerable span and the thrust therefore very See also:great, were so arranged as to provide See also:cross-walls, dividing the aisles, as in the See also:case of the See also:Basilica of See also:Maxentius, and, in the Thermae of See also:Rome, the subdivisions of the less important halls, so that there were no visible buttresses . In the See also:baths of See also:Diocletian, however, these cross-walls See also:rose to the height of the great vaulted See also:hall, the See also:tepidarium, and their upper portions were decorated with niches and pilasters . In a See also:palace at Shuka in See also:Syria, attributed to the end of the 2nd See also:century A.U., where, in consequence of the See also:absence of See also:timber, it was necessary to See also:cover over the building with slabs of stones, these latter were carried on See also:arches thrown across the great hall, and this necessitated two precautions, viz. the See also:pro-See also:vision of an See also:abutment inside the building, and of buttresses outside, the earliest example in which the feature was frankly accepted . In See also:Byzantine See also:work there were no See also:external buttresses, the plans being arranged to include them in cross-walls or interior abutments . The buttresses of the See also:early Romanesque churches were only See also:pilaster strips employed to break up the wall See also:surface and decorate the exterior . At a slightly later See also:period a greater See also:depth was given to the See also:lower portion of the buttresses, which was then capped with a deep sloping weathering . The introduction of ribbed vaulting, extended to the See also:nave in the 12th century, and the concentration of thrusts on definite points of the structure, rendered the See also:buttress an See also:absolute See also:necessity, and from the first this would seem to have been recognized, and the architectural treatment already given to the Romanesque buttress received a remarkable development . The buttresses of the early See also:English period have considerable See also:projection with two or three sets-off sloped at an acute See also:angle dividing the stages and crowned by triangular heads; and slender columns (" buttress shafts ") are used at the angle . In later work pinnacles and niches are usually employed to decorate the summits of the buttresses, and in the still later Perpendicular work the See also:vertical faces are all richly decorated with panelling .

End of Article: BUTTRESS (from the O. Fr. bouteret, that which bears a thrust, from bouter, to push, cf. Eng. " butt " and " abutment ")
[back]
BUTTON (Fr. bouton, O. Fr. boton, apparently from t...
[next]
C4H9OH BUTYL ALCOHOLS

Additional information and Comments

There are no comments yet for this article.
» Add information or comments to this article.
Please link directly to this article:
Highlight the code below, right click and select "copy." Paste it into a website, email, or other HTML document.