Zero baseline in structural monitoring: how to choose it?
A faulty baseline propagates through the whole history, and a silent reset can zero out real movement. Here is a procedure for selecting and documenting the reference measurement.
- What a zero baseline is, and what it is not
- Why "the first valid record" is often not enough
- First define what state zero should represent
- Criteria: accept, reject or defer
- The seven-step procedure for selecting a baseline
- Project, device and profile references are three different decisions
- Illustrative example: baseline measurement before excavation
- How the zero baseline affects alarms and responsibility
Read article
13 min read