flying buttress - noun - a segmental arch transmitting an outward and downward thrust to a solid buttress that through it's inertia transforms the thrust into a vertical one; an arched masonry support serving to bear thrust, as from a roof or vault, away from a main structure to an outer pier or buttress.
These are the arches which look like ribs on the outside of a building. They are intended to provide extra stability to walls which have high vaulted ceilings or heavy roofs or cupolas on top which happen to cause the walls to drift outward. Remember, gravity works.
1 comment:
Notre Dame provides a fine example. Notice that they don't detract from the beauty of the cathedral. Well done as always.
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