On another project, we set-out the foundations of a new building for High-Duty Plastics. The owner was the project manager and played a significant role ensuring all measurements were to his satisfaction, being a precision engineer by trade. We presented a detailed plan & spreadsheet demonstrating the measurements taken and the variations between these and the computed corner positions. None of the residuals exceeded 3mm!! Needless to say the building was erected in record time with the pre-cast panel walls and pre-welded beams fitting perfectly!
The other benefit of engaging a surveyor to do this work is they can prove the relationship of the building or structure to the legal boundaries and certify to this for the owner, neighbour & council. We think this type of check should always be made prior to pouring concrete as the owners curiously always seem more relaxed