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Details for Benchmark: AD8834

N 39° 21.920 W 084° 31.935 (NAD 83)

Altitude: 631

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

Location:
In BUTLER county, OH View Original Datasheet
Designation:
HAO B
Marker Type:
survey disk
Setting:
footings/foundation walls of small/medium structures
Stability:
May hold, but of type commonly subject to surface motion.

Reference Points

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Documented History (by the NGS)

01/01/1995 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1995 (AJL) THE STATION IS LOCATED ABOUT 29.0 KM (18.00 MI) NORTH OF CINCINNATI, OH. AND ABOUT 4.0 KM (2.50 MI) SOUTHEAST OF HAMILTON, OH., AT THE HAMILTON-FAIRFIELD AIRPORT. NEAR THE SOUTHWEST SIDE OF THE AIRPORT, ALONG THE SOUTHWEST SIDE OF THE MAIN TAXI NEAR RUNWAY END 11, NEAR AND IN TOP OF THE NORTHWEST CONCRETE CORNER OF A FOOTER, PIER, SURROUNDING A 100 X 50-FOOT CONCRETE SLAB. OWNERSHIP--CITYS OF HAMILTON AND FAIRFIELD AND BUTLER COUNTY, 2820 BOBMEYER ROAD, HAMILTON, OH. 45015. AIRPORT MANAGER RON MERSCH, PHONE 513-863-4447. NOTE--THIS STATION WAS SELECTED AS A (SACS) , AND IS A 1 AND 3/16-INCH SURVEY DISK. TO REACH THE STATION FROM THE JUNCTION OF INTERSTATE HIGHWAY 275 AND STATE HIGHWAY 4, ABOUT 11.2 KM (6.95 MI) SOUTH-SOUTHEAST OF HAMILTON, GO NORTH AND NORTHEAST 3.9 KM (2.40 MI) ALONG HIGHWAY 4 TO THE JUNCTION WITH STATE HIGHWAY 4 BYPASS. CONTINUE NORTHWEST, 5.6 KM (3.45 MI) ALONG HIGHWAY 4 TO A RAILROAD OVERPASS. CONTINUE NORTH, 0.8 KM (0.50 MI) ALONG HIGHWAY 4 TO BOBMEYER ROAD ON THE RIGHT. TURN RIGHT, EASTERLY, 1.25 KM (0.75 MI) ALONG BOBMEYER ROAD TO THE AIRPORT ENTRANCE ROAD ON THE LEFT. TURN LEFT, SOUTHEAST, 0.44 KM (0.25 MI) TO THE AIRPORT OFFICE ON THE LEFT. TURN LEFT, NORTHEAST, 0.06 KM (0.05 MI) ACROSS APRON TO THE TAXI. TURN LEFT, NORTHWEST, 0.54 KM (0.35 MI) ALONG TAXI TO THE STATION ON THE LEFT. STATION IS 30.4 M (99.7 FT) NORTHEAST OF THE SOUTHWEST CORNER OF THE SLAB, 15.2 M (49.9 FT) NORTHWEST OF THE SOUTHEAST CORNER OF THE SLAB, 0.8 M (2.6 FT) WEST OF A WITNESS POST, AND THE STATION IS 0.1 M (0.3 FT) ABOVE THE GROUND SURFACE. R.G. HAYES THIS IS A SECONDARY AIRPORT CONTROL STATION.

Control Text

  • This mark is at Hamilton-Fairfield Airport (HAO)
  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in June 1997.
  • The orthometric height was determined by GPS observations and a high-resolution geoid model.
  • GPS derived orthometric heights for airport stations designated as PACS or SACS are published to 2 decimal places. This maintains centimeter relative accuracy between the PACS and SACS. It does not indicate centimeter accuracy relative to other marks which are part of the NAVD 88 network.
  • The X, Y, and Z were computed from the position and the ellipsoidal ht.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
  • The geoid height was determined by GEOID99.