Tel/Fax  01923 682300

1. Index
2. CMCS at BRE
3. Development of AMS
4. Non-destructive testing of Marine Jetties
5. Fixed sensor monitoring of Diaphragm walls
6. Monitoring Buildings during Redevelopment
7. Tunnel Monitoring
8. Embankment Systems
9. Loggers
10. Tunnel Distortion Monitoring
11. In-place tilt monitoring system
12. Tunnels Interaction System
13. Re-Development of Small Properties
14. Viaducts
15. DLR at Mansion House
16. Tunnel Monitoring System (Discrete beams)
17. CTRL 240
18. Dams
19. Electro-levels
20. Movement indicators
21. Results of Charing Cross Load Cells
22. Non-destructive testing of concrete structures
23. Radio in Construction Monitoring
24. Settlement Reducing Piles
25. Land Surveying and Total Station Monitoring
26. Vibration Monitoring
27. Monitoring the complete strain history of concrete elements
28. Past CMCS Projects

	The top and middle load cell are made up of 16 Vibrating Wire (VW) load units. The bottom cell is made up of 12 VW units. There is no evidence of drift on any of the units.

The load on the base load cell has increased from 3000 kN to 6,000 kN over the past 12 years. Water levels under the London Clay have increased by 20 metres over the period.

Shear monitored in the soil as the pile was loaded are shown in the diagram above. The reversals in shear over time are due to the complex loading, i.e. from the construction loads and the effect of the changing water levels below the London clay.

The electro-levels in the soil indicated that the pile only settled about 6 mm, (this was substantiated by the survey results confirmed verbally). The pile was expected to settle about 60 mm.