To ensure the finished product meets Eurocode 7 (EC7) requirements, GeoSS highlights several testing protocols:
: Used to verify design parameters. Trial piles should be tested to loads as high as 3.5 WL to reach the ultimate limit state. To ensure the finished product meets Eurocode 7
| Problem | Cause | Good Practice Solution | |---------|-------|------------------------| | | Dense sand layer / Old Alluvium | Pre-bore 50–70% of pile depth; use shoe; reduce spacing of reaction piles | | Pile cracks during jacking | Tensile bending during eccentric load | Reduce rate; install centralizing guide; reject pile if crack >0.2 mm | | Adjacent ground heave | Full displacement in clay | Re-jack perimeter piles; install relief holes (100 mm dia., 2 m deep) | | Jacking force drops suddenly | Void / old trench backfill | Stop, inject grout, re-jack next day with lower rate | | Neighbour complaint (vibration) | Even jacking has micro-vibration | Use rubber pad at pile head; monitor with PPV <5 mm/s | install centralizing guide
Maintain a including: