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Details for Benchmark: MC0459

N 41° 07.217 W 083° 11.267 (NAD 83)

Altitude: 763.89

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

Location:
In SENECA county, OH View Original Datasheet
Designation:
B 173
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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Getting ready to set our NCEES trackables out. Picture taken. Out with Bookisme.

[Photos:]
photoBookisme at MC0459
MC0459 Benchmark in Tiffin, Ohio

Found with 27 Jack

[Photos:]
photoIMG_20150411_145237

Found benchmark in good condition.

[Photos:]
photoBenchmark

Benchmark in good condition. Found with OCCD.

[Photos:]
photoB 173 Station disk.
B 173 Station disk.
photoB 173 Disk.
B 173 Disk.

Benchmark in good condition.

[Photos:]
photoMC0459_02
Facing south
photoMC0459_01

This one was right down the road from us.

[Photos:]
photoTU benchmark

Found on old Hanson building, now TU Weight and Exercise building.

N 41° 07.218 W 083° 11.287

Station recovered as described in good condition. Coordinates listed above.

[Photos:]
photoBM_MC0459_3.jpg
Looking south
photoBM_MC0459_2.jpg
photoBM_MC0459_1.jpg

Documented History (by the NGS)

01/01/1954 by CGS (MONUMENTED)
01/01/1968 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1968 AT TIFFIN. AT TIFFIN, ABOUT 0.4 MILE WEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE STATION, NEAR THE CROSSING OF WALL STREET, SET VERTICALLY IN THE NORTH FACE OF THE NORTHEAST CORNER OF THE CONCRETE FOUNDATION OF HANSON MANUFACTURING COMPANY TWO-STORIED RED BRICK BUILDING, 31.4 FEET SOUTH OF THE SOUTH RAIL OF THE EASTBOUND MAIN TRACK, 1.5 FEET WEST OF THE NORTHEAST CORNER OF THE BUILDING, 1.1 FEET ABOVE THE LEVEL OF THE GROUND AND ABOUT 4 FEET ABOVE THE LEVEL OF THE TRACK.
10/23/1992 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 IN TIFFIN, AT THE INTERSECTION OF THE CHESSIE SYSTEMS RAILROAD AND WALL STREET, SET VERTICALLY IN THE NORTH FACE OF THE HANSON MANUFACTURING COMPANY, 9.4 M (30.8 FT) SOUTH OF THE NEAR RAIL, 7.8 M (25.6 FT) WEST OF THE STREET CENTERLINE, 0.5 M (1.6 FT) WEST OF THE NORTHEAST CORNER OF THE BUILDING, AND 0.3 M (1.0 FT) ABOVE THE GROUND SURFACE.

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.

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