A discharging arch or relieving arch is an arch built over a lintel or architrave to take off the super incumbent weight. The earliest example is found in the Great Pyramid, over the lintels of the entrance passage to the tomb: it consisted of two stones only, resting one against the other. The same object was attained in the Lion Gate and the Tom...
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In architecture, a discharging arch or relieving arch is an arch over a door, window, or other opening, designed to distribute the pressure of the wall above and thus relieve the part which is below it from the superincumbent weight. Such arches are commonly used over lintels and flat-headed openings.
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an arch for taking some of the weight from a structural member beneath it. Also called
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