Engineering projects often require the accurate co-ordination of many different components to construct a final assembly. Existing structures require continuous monitoring for movement when major works, such as tunnelling take place nearby. Modern calibrated precise electronic survey equipment including precise digital levels, digital extensometers and total stations with data logging facilities achieve accuracies of +/- 0.001 metres.
As-built surveys provide the high accuracy information required to evaluate final structures against design parameters and assessment of dimensional integrity highlights remedial adjustment prior to assembly on site.
Dimensional control can be applied to a variety of demanding tasks:
- Structures can be monitored to record movement caused by natural erosion or adjoining construction work.
- Components can be surveyed before arrival on site to ensure alignment across the interface between modules enabling accurate and efficient connections to be made.
- Process plant structures can be accurately measured prior to modification to ascertain variations from original design.
- Cladding can be manufactured to accurate physical site dimensions.