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Details for Benchmark: CK6017

N 32° 01.241 W 081° 54.864 (NAD 83)

Altitude: 177

Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED. (more info)

Location:
In TATTNALL county, GA View Original Datasheet
Designation:
CHALLSTROM AZ MK
Marker Type:
survey disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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Documented History (by the NGS)

01/01/1982 by GADT (MONUMENTED)
DESCRIBED BY GEORGIA DEPARTMENT OF TRANSPORTATION 1982 (WRN) THE STATION IS LOCATED ABOUT 9.35 KM (5.8 MI) NORTH FROM GLENNVILLE, 15.45 KM (9.6 MI) SOUTH FROM CLAXTON, AND 15.8 KM (9.8 MI) SOUTH-SOUTHEAST FROM GLENNVILLE. OWNERSHIP--STATE OF GEORGIA RIGHT OF WAY. TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301, (U.S. HIGHWAY 25 AND STATE ROUTE 73) AND STATE ROUTE 144 (STATE ROUTE 23) IN GLENNVILLE, GO NORTH ALONG U.S. HIGHWAY 301 FOR 5.4 KM (3.35 MI) TO THE CENTER OF A CONCRETE BRIDGE CROSSING BEARDS CREEK. CONTINUE GOING NORTH ALONG U.S. HIGHWAY 301 FOR 3.85 KM (2.4 MI) TO THE JUNCTION OF STATE ROUTE 250 TO THE RIGHT. CONTINUE GOING NORTH ALONG U.S. HIGHWAY 301 FOR 1.45 KM (0.9 MI) TO THE JUNCTION OF DIRT COUNTY ROAD 435 TO THE RIGHT. CONTINUE GOING NORTH ALONG U.S. HIGHWAY 301 FOR 0.5 KM (0.3 MI) TO THE STATION ON THE RIGHT. THE STATION IS A STANDARD GADT DISK STAMPED---CHALLSTROM 1982 AZ MK---, SET INTO THE TOP OF A ROUND CONCRETE MONUMENT 30.5 CM IN DIAMETER RECESSED 2.5 CM BELOW THE GROUND. IT IS LOCATED 11.55 METERS (37.90 FT) EAST FROM THE CENTERLINE OF THE HIGHWAY, 39.84 METERS (130.7 FT) NORTH FROM AN UNDERGROUND TELEPHONE CABLE PEDESTAL, 25.83 METERS (83.10 FT) EAST-NORTHEAST FROM THE NORTH END OF AN 18 INCH CONCRETE SIDE DRAIN PIPE ON THE WEST SIDE OF THE HIGHWAY, 1.19 METERS (3.9 FT) WEST FROM A METAL WITNESS POST. THE UNDERGROUND MARK IS A STANDARD GADT DISK STAMPED---CHALLSTROM 1982 AZ MK---, SET INTO AN IRREGULAR MASS OF CONCRETE .92 METERS BELOW THE SURFACE. HEIGHT OF LIGHT SHOWN ABOVE THE MARK WAS 1.50 METERS. COUNTY ROAD NUMBERS OBTAINED FROM--GENERAL HIGHWAY MAP TATTNALL COUNTY GEORGIA 1976. REVISED OCTOBER 1976. DESCRIBED BY W.M. JONES.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in September 1997.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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