Details for Benchmark: DU2058
N 33° 13.924 W 111° 20.654 (NAD 83)
Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED. (more info)
- In PINAL county, AZ View Original Datasheet
- Marker Type:
- survey disk
- set into the top of a round concrete monument
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Documented History (by the NGS)
|01/01/1975 by AZDT (MONUMENTED)
|DESCRIBED BY ARIZONA DEPARTMENT OF TRANSPORTATION 1975 (TT)
THE STATION IS LOCATED ABOUT 1.85 MILES SOUTHWEST OF FLORENCE JUNCTION ALONG THE WEST RIGHT-OF-WAY OF U.S. HWY. 80-89.
THE STATION IS AN ADOT HIGHWAY DIVISION DISK STAMPED TRACK P AND M GS 1975 AND IS SET IN A 10 INCH DIAMETER CONCRETE MONUMENT. THE DISK IS 85 FEET WEST OF THE HIGHWAY CENTERLINE, 5 FEET EAST OF THE WEST RIGHT-OF-WAY FENCE, 265 FEET NORTHWEST OF INTERSECTION OF U.S. 80-89 AND THE MAGMA RAILWAY TRACKS, AND IS MARKED WITH A WITNESS POST AND SIGN 2.7 FEET WEST.
REFERENCE MARK 1 IS AN ADOT HIGHWAY DIVISION DISK STAMPED RM 1 1975 AND IS SET IN A 10 INCH DIAMETER CONCRETE MONUMENT. THE DISK IS 87 FEET WEST OF THE HIGHWAY CENTERLINE AND 3 FEET EAST OF THE WEST RIGHT-OF-WAY FENCE.
REFERENCE MARK 2 IS AN ADOT HIGHWAY DIVISION DISK STAMPED RM 2 1975 AND IS SET IN A 10 INCH DIAMETER CONCRETE MONUMENT 88 FEET WEST OF THE HIGHWAY CENTERLINE AND 2 FEET EAST OF THE WEST RIGHT-OF-WAY FENCE.
TO REACH THE STATION FROM FLORENCE JUNCTION AT THE INTERSECTION OF U.S. 60 AND 80-89, GO SOUTH ON U.S. 80-89 FOR 1.85 MILES TO MILE POST 148.4 AND THE STATION IN THE WEST RIGHT-OF-WAY.
HEIGHT OF LIGHT ABOVE STATION MARK 1.5 METERS.
- The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in August 1993.
- The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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 Laplace correction was computed from DEFLEC99 derived deflections.
- The geoid height was determined by GEOID99.