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Details for Benchmark: AX2127

N 29° 54.133 W 097° 37.417 (NAD 83)

Altitude: 448.8

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

Location:
In CALDWELL county, TX View Original Datasheet
Designation:
G 785
Marker Type:
bench mark 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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Recovered in good condition.

[Photos:]
photoAX2127
photoAX2127 setting

Documented History (by the NGS)

01/01/1943 by CGS (MONUMENTED)
01/01/1959 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1959 4.0 MI E FROM LOCKHART. 4.0 MILES EAST ALONG THE MISSOURI-KANSAS-TEXAS RAILROAD FROM THE STATION AT LOCKHART, 0.1 MILE EAST OF MILEPOST 33, 0.1 MILE WEST OF A WOODEN BRIDGE, AT A ROAD CROSSING, 37 FEET EAST OF THE CENTERLINE OF THE ROAD, 49 FEET NORTH OF THE CENTERLINE OF THE TRACK, 1 FOOT SOUTH OF THE RIGHT-OF-WAY FENCE, 12 FEET EAST OF A FENCE CORNER, 3 FEET WEST OF A WHITE WOODEN WITNESS POST, AND ABOUT LEVEL WITH THE TRACK. A STANDARD DISK, STAMPED G 785 1943 AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.6 FOOT ABOVE GROUND. NOTE-- MARK IS 51 FEET NW OF CENTERLINE OF RR TRACKS, 37 FEET NE TO CENTERLINE OF ROAD, 58 FEET NNE TO CENTERLINE OF ROAD AND RR TRACKS.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The geoid height was determined by GEOID99.

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