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Author Topic: UTM Zone 17 North / EGM2008 1' PRJ File...  (Read 2023 times)

mjss25

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UTM Zone 17 North / EGM2008 1' PRJ File...
« on: July 04, 2017, 12:38:22 AM »
Hi Folks,

I was wondering if any of you already have the PRJ file for the UTM Zone 17 North / EGM 2008 1' already defined and ready to be used? I tried many times to construct this PRJ file but always fails miserably.

Anyone willing to share this file with everyone else?

Thanks in advance,

Milton

Paulo

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Re: UTM Zone 17 North / EGM2008 1' PRJ File...
« Reply #1 on: July 04, 2017, 01:08:00 AM »
I think thre following prj should do the tricK:

COMPD_CS["WGS 84 / UTM zone 17N +  EGM2008 geoid height",
   PROJCS["WGS 84 / UTM zone 17N",
      GEOGCS["WGS 84",
         DATUM["World Geodetic System 1984",
            SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]]],
         PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
         UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9102"]],
         AUTHORITY["EPSG","4326"]],
      PROJECTION["Transverse_Mercator",AUTHORITY["EPSG","9807"]],
      PARAMETER["latitude_of_origin",0],
      PARAMETER["central_meridian",-81],
      PARAMETER["scale_factor",0.9996],
      PARAMETER["false_easting",500000],
      PARAMETER["false_northing",0],
      UNIT["metre",1,AUTHORITY["EPSG","9001"]],
      AUTHORITY["EPSG","32617"]],
   VERT_CS["EGM2008 geoid height",
      VERT_DATUM["EGM2008  geoid",2005,AUTHORITY["EPSG","1027"]],
      UNIT["metre",1,AUTHORITY["EPSG","9001"]],
   AUTHORITY["EPSG","3855"]]]

Hope this helps,
Best Regards,
Paul Pelletier,
Surveyor

mjss25

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Re: UTM Zone 17 North / EGM2008 1' PRJ File...
« Reply #2 on: July 04, 2017, 01:22:07 AM »
Hi Paul,

thank you for posting this answer so quickly. I'll try it with my data and will post the results so other may benefit from your help.

Regards,

Milton