Moor Cut Trial Digging
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Transcript

  • 1. Moor Cut Trial Pit 26th November 2013 Proof of survey technique
  • 2. Moor Cut channel bed, beneath A4/St Cloud Way – a twin foul main lies somewhere below….but how deep?
  • 3. Track way and safety barriers set up
  • 4. Delivering equipment to site
  • 5. More equipment
  • 6. ….and more
  • 7. ‘Wise’ heads ponder the levels
  • 8. … the ‘big beast’ arrives - a U Mole (trench-less digger)
  • 9. Not forgetting the safety gear (a lifebouy ...?)
  • 10. How deep did you say the pipes are….?
  • 11. Extending the suction pipework
  • 12. The ‘big beast’ …sucking up
  • 13. As ground water seeps in … action pumps!
  • 14. Are we there yet…?
  • 15. That will be them ….. 2 off 300mm dia foul pumped sewer pipes..!
  • 16. Separating water from reusable spoil for infill
  • 17. • Task Cost £7.9k (plus VAT) • Contractor McNicholas • Survey/trial results awaited • Next step TW review of results • Complete twin main survey if technique accepted by TW