EPSG:10217 GWWAB22 Grid
Projected system (Lambert Conic Conformal (2SP)) in use: UK - Cardiff and the valleys. The full definition below, and conversion in one click.
EPSG publishes no simple transformation to WGS 84 for this datum: conversion works on the ellipsoid alone and can be off by tens of metres.
| Code | EPSG:10217 |
|---|---|
| Name | GWWAB22 Grid |
| Type | Projected system — Lambert Conic Conformal (2SP) |
| Area of use |
UK - Cardiff and the valleys United Kingdom (UK) - on or related to the rail routes around Cardiff and the valleys. |
| Bounds | W -3,60° · S 51,35° · E -3,12° · N 51,81° |
| Countries | United Kingdom |
| Datum | GWWAB22 Intermediate Reference Frame |
| Ellipsoid | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Base geographic system | EPSG:10214 — GWWAB22-IRF |
| Unit | metre (E east, N north) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Engineering survey and topographic mapping for railway applications. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of false origin | 51.65 | degree |
| Longitude of false origin | -2.65 | degree |
| Latitude of 1st standard parallel | 51.4 | degree |
| Latitude of 2nd standard parallel | 51.9 | degree |
| Easting at false origin | 168854.016 | metre |
| Northing at false origin | 193447.117 | metre |
proj4 definition
+proj=lcc +lat_0=51.65 +lon_0=-2.65 +lat_1=51.4 +lat_2=51.9 +x_0=168854.016 +y_0=193447.117 +ellps=GRS80 +units=m +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:10217.
WKT (ESRI format, the .prj content)
PROJCS["GWWAB22_Grid",GEOGCS["GCS_GWWAB22-IRF",DATUM["GWWAB22_Intermediate_Reference_Frame",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",168854.016],PARAMETER["False_Northing",193447.117],PARAMETER["Central_Meridian",-2.65],PARAMETER["Standard_Parallel_1",51.4],PARAMETER["Standard_Parallel_2",51.9],PARAMETER["Latitude_Of_Origin",51.65],UNIT["Meter",1.0]]Other systems — United Kingdom
- EPSG:10188ShAb07 Grid
- EPSG:10191CNH22-IRF
- EPSG:10194CNH22 Grid
- EPSG:10196CWS13-IRF
- EPSG:10199CWS13 Grid
- EPSG:10204DIBA15-IRF
- EPSG:10207DIBA15 Grid
- EPSG:10209GWPBS22-IRF
- EPSG:10212GWPBS22 Grid
- EPSG:10214GWWAB22-IRF
- EPSG:10219GWWWA22-IRF
- EPSG:10222GWWWA22 Grid
- EPSG:10224MALS09-IRF
- EPSG:10227MALS09 Grid
- EPSG:10229OxWo08-IRF
- EPSG:10235OxWo08 Grid
- EPSG:10237SYC20-IRF
- EPSG:10240SYC20 Grid
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.