1. Drilling and sampling in foundation engineering
Part 72-B2
Drilling and sampling in foundation engineering
VIII/2014, modified XII/2016
(Part 72, PP 2007, animation+p/r: compr.
Copyright notice Unauthorised copying of this presentation as whole or in parts in any form or by any means, electronic, photocopying, recording or otherwise, without prior written permision is prohibited.
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2. clay (with stones and boulders) coarse sand, gravels and rock rubble
Odex
Symmetrix
less air …
backfill
backfill ΔS
clay (with stones and boulders)
clay
coarse sand, gravels and rock rubble
Odex
rock
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Rotary percussive drilling method with eccentric reamer – disadvantages and limitations

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Rotary percussive drilling method with eccentric reamer – disadvantages and limitations (cont.)

5. Rotary percussive drilling method with eccentric reamer – successful case for vertical drilling (system Bulroc)
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6. Kindergarten (infant school) in Alingsås
Settlements ≈ 100 mm / 6 months
Kindergarten (infant school) in Alingsås
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7. Author’s proposal to stop further settlements – patented method of soil improvement
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8. Casings after removal through crushed rock fill
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9. ECCENTRIC vs. ROBIT® concentric drilling
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10. Elemex, Symmetrix, ROBIT and IBEX drilling system NO-X
OD = Rotary percussive drilling method with centric drill bit and percussed rotating casing with button bits + =
Elemex, Symmetrix, ROBIT and IBEX drilling system NO-X
= Rotary percussive drilling method with rotating centric drill bit and percussed none rotating casing with button bits
ODEX and TUBEX = Rotary percussive drilling method with eccentric reamer separately rotating to drill bit and percussed but none rotating casing without button bits
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11. Elemex, Symmetrix, ROBIT and IBEX drilling system NO-X
ODEX and TUBEX = Rotary percussive drilling method with eccentric reamer separately rotating to drill bit and percussed none rotating casing without button bits
Elemex, Symmetrix, ROBIT and IBEX drilling system NO-X
= Rotary percussive drilling method with rotating centric drill bit and percussed none rotating casing with button bits
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12. Elemex
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13. press
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14. press
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15. Symmetrix
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16. Symmetrix different pilot bits
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Symmetrix different pilot bits

17. Symmetrix
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18. Symmetrix pilot bit mounted on the Down-The Hole-Hammer (DTH)
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Symmetrix pilot bit mounted on the Down-The Hole-Hammer (DTH)
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19. Symmetrix drilling for piling
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Symmetrix drilling for piling

20. press
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21. press
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23. ???
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“Tube a manchettes” multi-stage grouting method with steel casing for drilling (alt.)

24. Thank You for Your attention!
THE END of Part 72-B2
Thank You for Your attention!
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25. Welcome to www.najder.se
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