EPSG:11338

Bhutan Vertical Datum 2022 height

Attributes

Unit: metre

Geodetic CRS: Bhutan Vertical Datum 2022 height

Datum: Bhutan Vertical Datum 2022

Data source: EPSG

Information source: MIRASpaco on behalf of NLCS (National Land Commission Secretariat of Bhutan).

Revision date: 2026-02-27

Scope: Geodesy, engineering survey, topographic mapping.

Remarks: Heights are derived through application of the DrukGeoid22 geoid separation model (transformation code 11339) to DrukRef23 ellipsoid heights.

Area of use: Bhutan.

Coordinate system: Vertical CS. Axis: height (H). Orientation: up. UoM: m.

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SimpleMap

Center coordinates
27.52 90.44

Projected bounds:
26.7 88.74
28.33 92.13

WGS84 bounds:
88.74 26.7
92.13 28.33

Bhutan.
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Definition: OGC Well Known Text

VERT_CS["Bhutan Vertical Datum 2022 height",
    VERT_DATUM["Bhutan Vertical Datum 2022",2005,
        AUTHORITY["EPSG","1451"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Gravity-related height",UP],
    AUTHORITY["EPSG","11338"]]

Definition: OGC Well Known Text 2 (2019)

VERTCRS["Bhutan Vertical Datum 2022 height",
    VDATUM["Bhutan Vertical Datum 2022"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey, topographic mapping."],
        AREA["Bhutan."],
        BBOX[26.7,88.74,28.33,92.13]],
    ID["EPSG",11338]]

Definition: ESRI Well Known Text

VERTCS["Bhutan_Vertical_Datum_2022_height",
    VDATUM["Bhutan_Vertical_Datum_2022"],
    PARAMETER["Vertical_Shift",0.0],
    PARAMETER["Direction",1.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+vunits=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:11338","+vunits=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "VerticalCRS",
    "name": "Bhutan Vertical Datum 2022 height",
    "datum": {
        "type": "VerticalReferenceFrame",
        "name": "Bhutan Vertical Datum 2022"
    },
    "coordinate_system": {
        "subtype": "vertical",
        "axis": [
            {
                "name": "Gravity-related height",
                "abbreviation": "H",
                "direction": "up",
                "unit": "metre"
            }
        ]
    },
    "scope": "Geodesy, engineering survey, topographic mapping.",
    "area": "Bhutan.",
    "bbox": {
        "south_latitude": 26.7,
        "west_longitude": 88.74,
        "north_latitude": 28.33,
        "east_longitude": 92.13
    },
    "id": {
        "authority": "EPSG",
        "code": 11338
    }
}

Definition: GeoServer

11338=VERT_CS["Bhutan Vertical Datum 2022 height",VERT_DATUM["Bhutan Vertical Datum 2022",2005,AUTHORITY["EPSG","1451"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","11338"]]

Definition: MapServer - MAPfile

PROJECTION
	"vunits=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+vunits=m +no_defs +type=crs">
	<Layer srs="+vunits=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 11338, 'EPSG', 11338, '+vunits=m +no_defs +type=crs', 'VERT_CS["Bhutan Vertical Datum 2022 height",VERT_DATUM["Bhutan Vertical Datum 2022",2005,AUTHORITY["EPSG","1451"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","11338"]]');