St. Albans Base Line (1891-1892)

The location of the St. Albans base line was determined in 1891 and measured in October of 1892 over the course of three nights and one day. The measurement was supervised by R. S. Woodward and was performed with metal tapes, the first time that tapes were used exclusively for a precise base line measurement, although the tapes had been calibrated and used experimentally at the Holton base line the prior year. The St. Albans base line length, reduced to sea level, was determined to be 3,870.4028 m, +/- 3.5 mm.

The triangulation for the base line net and the extended net was accomplished from 1879 to 1892 by Walter B. Fairfield and A. T. Mosman. The base line network connected to the Allegheny series along the Ivy(2)-Summersville(1) line, and connected to the Ohio series along the Piney(12)-Pigeon(13) line.

See also: transcontental triangulation, Allegheny series, Ohio series


Ohio series http:/images/bmwiki/arc/st_albans.jpg Allegheny series

No.

Station

PID

Monumented

Destroyed

Designation

1

Summersville (1879)

HX2916

1880

SUMMERSVILLE RESET

2

Ivy (1879)

GX3374

1881

IVY

3

Table Rock (1880)

HX3105

1933

TABLE ROCK RESET

4

Holmes (1880)

HX3041

1881

HOLMES RESET

5

Simms (1891)

HX3111

1891

SIMMS

6

Ryan (1891)

HX3116

1944

RYAN RESET

7

St. Albans East Base (1891)

HX3115

1893

SAINT ALBANS EAST BASE 1893

8

St. Albans West Base (1891)

HX3118

1893

SAINT ALBANS WEST BASE 1893

9

Rogers (1891)

HX3117

1893

ROGERS

10

Coal (1891)

HX3126

1893

COAL RESET

11

Big Rocks (1881)

HX3130

1891

BIG ROCKS RESET

12

Piney (1880)

HY2256

1880

Y

PINEY 1883

13

Pigeon (1880)

HY2261

1883

PIGEON RESET

StAlbansBaseLine (last edited 2009-03-21 21:03:18 by localhost)