A bad works-man blames his tool - but the aim of this section is not to blame tool but to look for solutions. Errors are inevitable but can be minimised. Its the errors that sometime make work interesting and challenging. At this juncture, the project has not proceeded beyond documenting and measured drawing the built profile (plan). Hence this discussion is limited to what has been observed till this phase and includes :-
- Errors in establishing the Reference Plan
- Errors from Instruments used
- Errors from Marking the Profile
- Errors from Measuring, Recording and Transferring dimensions
