Summary of OM approaches
| Ab initio (from the start) | Ipso tempore (in the moment) | |||
|---|---|---|---|---|
| A Optimistic (Peck, 1969) | B Cautious (Ciria C185) | C Proactive modifications (Ciria C760) | D Reactive contingencies (Peck, 1969) | |
| OM design work starts | Before wall construction | After wall construction | ||
| Starting OM design | Most probable parameters | Characteristic parameters | From back-analysis of initial stages | |
| Existing back-analysis | Necessary | Preferred | Use initial construction stages | |
| Design objectives | Optimise wall thickness/depth/propping | Optimise wall propping | Reduce wall support | Increase wall support |
| Design plans | Use contingency plan | Use modification plan | Introduce modification plan | Introduce contingency plan |
| A | B | C | D | |
|---|---|---|---|---|
| OM design work starts | Before wall construction | After wall construction | ||
| Starting OM design | Most probable parameters | Characteristic parameters | From back-analysis of initial stages | |
| Existing back-analysis | Necessary | Preferred | Use initial construction stages | |
| Design objectives | Optimise wall thickness/depth/propping | Optimise wall propping | Reduce wall support | Increase wall support |
| Design plans | Use contingency plan | Use modification plan | Introduce modification plan | Introduce contingency plan |