TheBitterEnd
Well-known member
I've read the BCRA survey grading system but am left with a few questions:
How does one know if station position is within a given distance of it's actual position (e.g. 10cm for grade 5)?
For grade 5 the measurement should be taken from within 10cm of the station - is this irrespective of leg length?
Obviously it's not always possible to do a closed loop but what would be an acceptable loop closure error?
How does one know if station position is within a given distance of it's actual position (e.g. 10cm for grade 5)?
For grade 5 the measurement should be taken from within 10cm of the station - is this irrespective of leg length?
Obviously it's not always possible to do a closed loop but what would be an acceptable loop closure error?