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Details for Benchmark: DV2236

N 33° 38.507 W 112° 21.199 (NAD 83)

Altitude: 1206

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

Location:
In MARICOPA county, AZ View Original Datasheet
Designation:
FIELD
Marker Type:
survey 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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Found it, tftbm.

Discovered this benchmark as described and in very good condition. The nearby witness post has certainly seen better days though.

[Photos:]
photoStanding view of benchmark
photoBenchmark & GPSr
photoView looking west
photoSurvey marker/witness post

In great shape

[Photos:]
photoIMG_20121024_102628
photoIMG_20121024_102632

found at N33 38.507 W112 21.200

[Photos:]
photoclose-up of benchmark
photogps and benchmark

Found It

[Photos:]
photoDisk
photoEast View

Recovered as described, in good condition.

[Photos:]
photoFIELD / DV2236
A close-up of the mark, with the GPSr.
photoFIELD / DV2236
A close-up of the mark alone.
photoFIELD / DV2236
A wide view of the general area, looking northwest.

FOUND IT!GOOD DIRECTIONS! OUR FIRST BENCHMARK!

OUR FIRST BENCHMARK----WE ARE FROM COLORAOD AND THIS IS A FIRST FOR US--THANKS

Found In good Condition.

[This entry was edited by Rkevsmit on Wednesday, February 01, 2006 at 8:18:44 AM.]

Documented History (by the NGS)

01/01/1986 by AZDT (MONUMENTED)
DESCRIBED BY ARIZONA DEPARTMENT OF TRANSPORTATION 1986 (HW) THE STATION IS LOCATED ABOUT 6.5 KM (4.0 MI) NORTHWEST OF YOUNGTOWN, ARIZONA. TO REACH THE STATION FROM THE INTERSECTION OF BELL ROAD AND GRAND AVENUE, GO NORTHWEST ON GRAND AVENUE FOR 0.41 KM (0.25 MI) TO THE STATION ON THE RIGHT ACROSS THE NORTHEAST SIDE OF THE RAILROAD TRACKS. THE STATION IS A STANDARD A.G.S. DISK STAMPED---FIELD 1986---, SET INTO THE TOP OF A ROUND CONCRETE MONUMENT 25 CM IN DIAMETER PROJECTING 10 CM ABOVE GROUND. LOCATED 12.8 METERS (42.0 FT) NORTHEAST FROM THE NORTH RAILROAD OF THE MAIN RAIL, 36.33 METERS (119.2 FT) WEST FROM THE RAILROAD SPUR CONVERGENCE, 17.22 METERS (56.5 FT) SOUTHWEST FROM A CHAIN LINK FENCE, 5.94 METERS (19.5 FT) SOUTH-SOUTHEAST FROM THE WEST END OF THE SOUTHERN MOST OF TWO PIPES, 1.22 METERS (4.0 FT) NORTHWEST FROM A WITNESS POST AND SIGN, 1.22 METERS (4.0 FT) SOUTHEAST FROM A WITNESS POST AND SIGN. THE UNDERGROUND MARK IS A STANDARD A.G.S. DISK STAMPED---FIELD 1986---, SET INTO AN IRREGULAR MASS OF CONCRETE 0.81 METERS BELOW THE SURFACE.

Control Text

  • The horizontal coordinates were established by GPS observations 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 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.

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