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NDT Research Findings From NAPTF April 24, 2012 Working Group

NDT Research Findings From NAPTF April 24, 2012 Working Group. Roy D. McQueen, P.E. Roy D. McQueen & Associates, Ltd. rdmcqueen@rdmcqueen.com. Acknowledgements. Gordon Hayhoe, PhD Josh Davis Jason Tarby Mike Loev. TOPICS. Force Linearity CBR/k correlations BAKFAA demonstration

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NDT Research Findings From NAPTF April 24, 2012 Working Group

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  1. NDT ResearchFindings From NAPTFApril 24, 2012 Working Group Roy D. McQueen, P.E. Roy D. McQueen & Associates, Ltd. rdmcqueen@rdmcqueen.com

  2. Acknowledgements • Gordon Hayhoe, PhD • Josh Davis • Jason Tarby • Mike Loev

  3. TOPICS • Force Linearity • CBR/k correlations • BAKFAA demonstration • Future enhancements

  4. 12, 24, 36 kip Applied Force HFS HFS MFS LFS MFS LFS

  5. HFS HFS 12, 24, 36 kip Applied Force MFS MFS LFS LFS

  6. Typical CBR Range

  7. To Do • Boundary conditions for layer moduli • Seed values to start back-calculations • Further investigate CBR to k correlations • Hard bottom guidance

  8. Questions?

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