Details for Benchmark: FJ0681
N 35° 27.817 W 097° 31.550 (NAD 83)
Coordinates may not be exact. Altitude is ADJUSTED and location is SCALED. (more info)
- In OKLAHOMA county, OK View Original Datasheet
- X 192
- Marker Type:
- vertical control disk
- abutments and piers of large bridges
- Probably hold position/elevation well.
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Documented History (by the NGS)
|01/01/1984 by NGS (MONUMENTED)
|DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
IN OKLAHOMA CITY. THE MARK IS 1.67 M ABOVE SHARTEL AVENUE. 1.2 KM (0.75 MI) WEST ALONG RENO AVENUE FROM THE SANTA FE RAILROAD AVENUE OVERPASS OVER RENO AVENUE IN OKLAHOMA CITY, THENCE ABOUT 57.91 METERS (190.0 FT) SOUTH ALONG SHARTEL AVENUE, AT THE NORTHERNMOST BRIDGE PIER SUPPORTING INTERSTATE HIGHWAY 40 WESTBOUND ON THE EAST SIDE OF SHARTEL AVENUE AND 1.52 METERS (5.0 FT) ABOVE THE GROUND, 15.24 METERS (50.0 FT) EAST OF THE CENTERLINE OF SHARTEL AVENUE, 4.41 METERS (14.5 FT) NORTH OF THE CENTER OF A CONCRETE ALLEYWAY, AND 0.30 METERS (1.0 FT) WEST OF THE WEST EDGE OF AN EIGHT-INCH DIAMETER IRON DRAIN DOWNSPOUT.
|01/01/1988 by USPSQD (GOOD)
|RECOVERY NOTE BY US POWER SQUADRON 1988 (MS)
RECOVERED IN GOOD CONDITION.
|01/14/1994 by NGS (GOOD)
|RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994
1.2 KM (0.75 MI) WESTERLY ALONG RENO AVENUE FROM THE INTERSECTION OF THE SANTA FE RAILROAD IN OKLAHOMA CITY, SET VERTICALLY IN THE NORTH FACE OF THE MOST NORTHEASTERLY OF 2 CONCRETE COLUMNS OF THE FIRST PIER EAST OF SHARTEL AVENUE OF THE INTERSTATE HIGHWAY 4O OVERPASS OF SHARTEL AVENUE, 59.7 M (195.9 FT) SOUTH OF THE CENTERLINE OF THE AVENUE, 15.2 M (49.9 FT) EAST OF THE CENTER OF SHARTEL AVENUE, 5.5 M (18.0 FT) NORTHEAST OF THE CENTER OF THE WESTBOUND LANES OF THE OVERPASS, 4.4 M (14.4 FT) NORTH OF THE CENTER OF AN ALLEY, AND 1.5 M (4.9 FT) ABOVE THE GROUND SURFACE.
- The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
- The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in August 1994.
- The geoid height was determined by GEOID99.
- The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (G = 980.6199 gals.).
- The modeled gravity was interpolated from observed gravity values.