Skip to Content

Details for Benchmark: EZ1942

N 35° 40.950 W 078° 54.017 (NAD 83)

Altitude: 352.72

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

Location:
In WAKE county, NC View Original Datasheet
Designation:
H 218
Marker Type:
bench mark disk
Setting:
abutments and piers of large bridges
Stability:
Most reliable and expected to hold position/elevation well.

Must Read!

Benchmarks may be on private property or in dangerous locations. Obey local laws. By using the services on Geocaching.com you agree to this disclaimer.

Recovered in good condition - see attached pictures.

[Photos:]
photocloseup of marker
recovered in good condition
photolocation to NE
marker indicated by red box

Documented History (by the NGS)

01/01/1980 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1980 2.0 MI EAST FROM NEW HILL. 4.1 MILES SOUTHWEST ALONG U.S. 1 FROM UNDERPASS OF N.C. 55 SOUTHEAST OF APEX, AT SR 1149 OVERPASS, SET VERTICALLY IN THE SOUTH FACE OF THE EASTERNMOST PIER OF THE CENTER SUPPORT SECTION OF BRIDGE, 31.6 FEET SOUTHEAST OF CENTERLINE OF 2 LANE HIGHWAY AND 1.3 FEET SOUTHWEST OF SOUTHEAST CORNER OF PIER. THE MARK IS 3.5 FT ABOVE HIGHWAY.
01/01/1985 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1985 RECOVERED IN GOOD CONDITION.

Control Text

  • 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 June 1991.
  • 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.

Advertising with Us

Return to the Top of the Page