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MACROPILES TM : Ultra-High- Capacity Micropiles for Foundation - PowerPoint PPT Presentation

MACROPILES TM : Ultra-High- Capacity Micropiles for Foundation Support John R. Wolosick, P.E. Hayward Baker Inc., Atlanta, Georgia USA ISM International Society for Micropiles May 4, 2006 Schrobenhausen, Germany Atlanta Hartsfield


  1. MACROPILES TM : Ultra-High- Capacity Micropiles for Foundation Support John R. Wolosick, P.E. Hayward Baker Inc., Atlanta, Georgia USA ISM – International Society for Micropiles May 4, 2006 Schrobenhausen, Germany

  2. Atlanta Hartsfield International Airport 1000 Ton Load Test

  3. 12 inch Diameter Outer Pipe

  4. Double Reaction Beam Set-Up

  5. Independent Reference Frame

  6. FHWA Minipile Load Test Hartsfield Int'l Airport Atlanta, GA Load (Tons) 0.0 200.0 400.0 600.0 800.0 1000.0 1200.0 0.000 Design Load 400 Tons 0.200 0.258 0.340 0.400 Deflection (Inches) 0.600 0.800 0.916 1.000 1.200 Test #1 Data Rebound Curve 2 1.277 Design Load 1.400 Test #2 Data Rebound Curve 2

  7. Jackson Avenue & 47 th Avenue Long Island City, Queens, NY August, 2005 Installation of 29 Macropiles reduced foundation installation from 100 Micropiles 750 Ton working axial capacity 18 inch (450 mm) OD steel pipe, 6 #20 (64 mm) Grade 80 Steel bars, 6000 psi (41,350 kPa) cement grout

  8. Section View of Macropiles and Pile Cap

  9. Section View of Macropile Reinforcement

  10. High Strength Cages with Tremie Tubes

  11. Reinforcing Cage and Tremie Details

  12. Setting Reinforcing Cage with Crane

  13. Reinforcing Cage within Casing

  14. Bearing Plates: 30 inch x 30 inch (760 mm x 760 mm)

  15. Chelsea Arts Tower New York, NY February, 2005 22 Story Condominium Structure 27 Macropiles installed Diameters were 12, 18, 24 inch (305, 450, 610 mm) Design (Working) Loadings were up to 1400 Tons compression and 225 Tons tension!

  16. Section View of Macropiles and Pile Cap

  17. Section View of Macropile Reinforcement

  18. MACROPILE DESIGN LOADS

  19. Macropile Layout

  20. Reinforcement Design for 1400 Ton Macropile Plan View Layout for Macropiles

  21. Flushing out a rock socket prior to Macropile installation

  22. Assembly of Macropile Reinforcing Cage

  23. Setting Reinforcing Cage with Crane

  24. Setting Reinforcing Cage on a Snowy Day

  25. The End Questions?

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