A practical Example for Calculation of the True Area of the field | Errors in Chain Surveying
In my previous article, we studied how to measure true distance considering the Errors occurring in Surveying.
Correction formulas to be kept in mind (for incorrect length of Chain)
True distance = L’/L*measured distance
True area = (L’/L)2*measured area
True Volume = (L’/L)3 * measured volume
Where, L’ = incorrect length of chain
L = correct length of chain
The chain was tested before starting the surveying and was found to be 20m. At the end of surveying, it was tested again and was found to be 20.12m. The area of the plan of the field drawn to a scale 1cm = 6m was 50.4sqm. Find the true area of the field in sqcm.