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Synopsis
Olana State Historic Site in Hudson, N.Y.
Brick Arches
There are several styles of brick arches to choose from, and the decision to use one style or another is dependent on more than just looks. A master bricklayer and brickwork consultant explains the history and classifications of brick arches. Dr. Gerard Lynch
The simplest way to span any opening is by means of a beam or lintel. If for some reason they are unobtainable, or the space to be bridged is beyond the length of a suitable beam, then a way has to be found to do so with an assembly of small stones or bricks. These have to be fitted together in such a way as to stay permanently in place, stabilize the opening, and safely carry and transmit loading through the walls to the foundations, and the very best way is by means of an arch.
Most arches have a characteristic curvature, though other shapes have been used as well. In a well-built arch the arch bricks or “voussoirs” will be wedge-shaped and remain in place by each one pressing in on, or squeezing, its neighbor.
In discussing the masonry arch it is important to have a basic understanding of the craft terms used for the various parts that are part of the overall construction, as well as of their function in it.
