discharging arch

noun

1. an arch for taking some of the weight from a structural member beneath it.

Word History and Origins

Origin of discharging arch¹

First recorded in 1810–20

Example Sentences

In order to relieve the lintel from too great a pressure a “discharging arch” is generally built over it.

From Project Gutenberg

Discharging Arch, an arch formed in the substance of a wall to relieve the part which is below it from the superincumbent weight.

From Project Gutenberg