2026-09-27T15:28:43+01:00https://marinefinds.org.uk/datalabs/terminology/object/format/jsonhttps://marinefinds.org.uk/datalabs/terminology/object/format/xmlhttps://marinefinds.org.uk/datalabs/terminology/object2962137793FOUR CENTRED ARCHYA pointed arch which, on a plan, is shown to be constructed around four arcs: two centred below and two centred upon the springing line, which is the level at which the vertical sides of the arch begin to curve.546P