Surveying & Geomatics

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Stadia Distance

Horizontal distance from stadia hair readings on a level rod.

Formula

D = 100 \, s \cos^2\theta

Variables

DDistance

sStadia interval

\thetaVertical angle

Example

s=0.5 m, θ=0°: D = 100×0.5 = 50 m

Did You Know?

The stadia constant 100 comes from the fixed spacing of the crosshairs in a surveyor's telescope.

surveying stadia tacheometry

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