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Surveying - Engineering

Q1:

If the area calculated form the plan plotted with measurements by an erroneous chain, accurate area of the plan is

A

B

C

D

E none of the above

ANS:D -

Correct Scale/true area = (incorrect length or length of chain used/correct or nominal or designated length) ^2 x measured area. If there is length then-> (measured area* (nomial length of chain/length of chain used) ^2).

If there is scale then-> just (measured area* (wrong scale/Correct scale)