What is stadia method in surveying?

Definition of stadia : a surveying method for determination of distances and differences of elevation by means of a telescopic instrument having two horizontal lines through which the marks on a graduated rod are observed also : the instrument or rod.

What is stadia constant in surveying?

stadia constant [LEVELING]—The constant which is multiplied by the stadia interval to obtain the length of a sight in meters. Also, the constant by which the sum of the stadia intervals of all sights of a run is converted to the length of the run in kilometers.

What is stadia measurement?

measurement systems measures were the furlong or stade (stadium), the mile (mille passus), and the league (leuga). The stade consisted of 625 Roman feet (185 metres or 606.9 feet), or 125 paces, and was equal to one-eighth of a mile.

How accurate is stadia measurements?

For distances less than 150 m and using stadia or self-reduction methods, almost all investigators reported accuracy values in the range 1/600 – 1/2100, with elevations being determined to an accuracy ranging from ± 36 mm to ± 59 mm.

What is a stadia measurement?

What is stadia distance?

The stadia, stadium, stade or stadion is an ancient unit of length. According to Herodotus , one stade is equal to 600 feet.

What is stadia factor?

the focal length of the lens (f) and the distance from the center of the instrument to the center of of the objective lens. (c) K or f/i is the stadia interval factor of the instrument. s is the stadia or rod intercept, and is determined in the field by observing the difference between the upper stadia hair.

What is stadia interval?

a method of surveying in which distances are read by noting the interval on a graduated rod intercepted by two parallel cross hairs (stadia hairs, or stadia wires ) mounted in the telescope of a surveying instrument, the rod being placed at one end of the distance to be measured and the surveying instrument at the …

How accurate is a stadia measurement?