Topographic mapping.
Topographic mapping before 1956 in Northern Ireland and 1970 in the Republic of Ireland. Replaced by Belfast Lough height and Malin Head height (CRS codes 5732 and 5731).
Ireland - onshore. United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
Vertical CS. Axis: height (H). Orientation: up. UoM: ft(Br36).
53.41 -7.95
51.39 -10.56
55.43 -5.34
-10.56 51.39
-5.34 55.43
Definition: OGC Well Known Text
VERT_CS["Poolbeg height (ft(Br36))", VERT_DATUM["Poolbeg",2005, AUTHORITY["EPSG","5152"]], UNIT["British foot (1936)",0.3048007491, AUTHORITY["EPSG","9095"]], AXIS["Gravity-related height",UP], AUTHORITY["EPSG","5754"]]
Definition: OGC Well Known Text 2 (2019)
VERTCRS["Poolbeg height (ft(Br36))", VDATUM["Poolbeg"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["British foot (1936)",0.3048007491]], USAGE[ SCOPE["Topographic mapping."], AREA["Ireland - onshore. United Kingdom (UK) - Northern Ireland (Ulster) - onshore."], BBOX[51.39,-10.56,55.43,-5.34]], ID["EPSG",5754]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "Poolbeg height (ft(Br36))", "datum": { "type": "VerticalReferenceFrame", "name": "Poolbeg" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": { "type": "LinearUnit", "name": "British foot (1936)", "conversion_factor": 0.3048007491 } } ] }, "scope": "Topographic mapping.", "area": "Ireland - onshore. United Kingdom (UK) - Northern Ireland (Ulster) - onshore.", "bbox": { "south_latitude": 51.39, "west_longitude": -10.56, "north_latitude": 55.43, "east_longitude": -5.34 }, "id": { "authority": "EPSG", "code": 5754 } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+vto_meter=0.3048007491 +no_defs +type=crs"> <Layer srs="+vto_meter=0.3048007491 +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 5754, 'EPSG', 5754, '+vto_meter=0.3048007491 +no_defs +type=crs', 'VERT_CS["Poolbeg height (ft(Br36))",VERT_DATUM["Poolbeg",2005,AUTHORITY["EPSG","5152"]],UNIT["British foot (1936)",0.3048007491,AUTHORITY["EPSG","9095"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5754"]]');