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Details for Benchmark: LW5293

N 41° 49.103 W 071° 22.813 (NAD 83)

Altitude: 65.19

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

Location:
In PROVIDENCE county, RI View Original Datasheet
Designation:
EP 002
Marker Type:
survey disk
Setting:
pavements (street, sidewalk, curb, apron, etc.)
Stability:
Mark of questionable or unknown stability.

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My first Benchmark, found it in good condition.

[Photos:]
photoLW5293
almost correct...

Recovered in good condition, as described.

[Photos:]
photoDisk and abacus, East Providence RI

Documented History (by the NGS)

01/01/1987 by RIGS (MONUMENTED)
DESCRIBED BY RHODE ISLAND GEODETIC SURVEY 1987 (GEC) THE STATION IS LOCATED ABOUT 0.5 KM (0.3 MI) SOUTHWEST OF THE EAST PROVIDENCE CITY HALL. OWNERSHIP--STATE RIGHT OF WAY. TO REACH THE STATION FROM THE STATE HIGHWAY 114 (PAWTUCKET AVENUE) BRIDGE OVER INTERSTATE HIGHWAY 195, GO WEST FOR 2.0 KM (1.2 MI) ON HIGHWAY 195 TO THE STATION ON THE RIGHT SET IN THE SIDEWALK NEAR THE NORTHEAST CORNER OF THE POTTER STREET OVERPASS. THE STATION IS A STANDARD RIGS DISK STAMPED---EP OO2 1987---, SET INTO A DRILL HOLE FLUSH WITH THE CONCRETE SIDEWALK, 20.7 METERS (68.0 FT) NORTH FROM THE CENTERLINE OF THE THREE TRAVEL LANES OF HIGHWAY 195 WEST, 12.3 METERS (40.5 FT) WEST-NORTHWEST FROM A NET+T CO POLE 5, 5.8 METERS (19.0 FT) WEST FROM THE CENTERLINE OF POTTER STREET, 0.45 METERS (1.5 FT) EAST FROM THE CONCRETE RAILING FOR THE OVERPASS. DESCRIBED BY THE RHODE ISLAND GEODETIC SURVEY.
01/01/1987 by RIGS (GOOD)
RECOVERY NOTE BY RHODE ISLAND GEODETIC SURVEY 1987 0.5 KM (0.3 MI) SW FROM EAST PROVIDENCE. THE STATION IS LOCATED ABOUT 0.5 KM (0.3 MI) SOUTHWEST OF THE EAST PROVIDENCE CITY HALL. OWNERSHIP--STATE RIGHT OF WAY. TO REACH THE STATION FROM THE STATE HIGHWAY 114 (PAWTUCKET AVENUE) BRIDGE OVER INTERSTATE HIGHWAY 195, GO WEST FOR 2.0 KM (1.2 MI) ON HIGHWAY 195 TO THE STATION ON THE RIGHT SET IN THE SIDEWALK NEAR THE NORTHEAST CORNER OF THE POTTER STREET OVERPASS. THE STATION IS A STANDARD RIGS DISK SET INTO A DRILL HOLE FLUSH WITH THE CONCRETE SIDEWALK, 20.7 METERS (68.0 FT) NORTH FROM THE CENTERLINE OF THE THREE TRAVEL LANES OF HIGHWAY 195 WEST, 12.3 METERS (40.5 FT) WEST-NORTHWEST FROM A NET+T CO POLE 5, 5.8 METERS (19.0 FT) WEST FROM THE CENTERLINE OF POTTER STREET, 0.45 METERS (1.5 FT) EAST FROM THE CONCRETE RAILING FOR THE OVERPASS.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in August 1998.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • 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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