- An arch with a flat lower or inner curve. See also jack arch.More example sentences
- The result is a stone frame - 28 stone columns with flat arches between them - supporting the roof and the reinforced concrete floor slabs.
- A concrete and glass form rises from the second floor of the concourse and bulges out from its base, forming a flat arch.
- Sansovino could have designed a rusticated flat arch for the herms to carry, or even a simple Tuscan entablature without metopes and triglyphs, but instead he chose the Doric.