International Workshop on Micropiles Tokyo Japan August 24

International Workshop on Micropiles Tokyo, Japan, August 24 -27, 2004 Quality Assurance and Monitoring Of Micropiles Dr. Donald A. Bruce Gary M. Weinstein

Preconstruction • Site Assessment • Site Investigation • GBR • Detailed Design • Plans & Specs

Preconstruction • Bidding Strategies – Best Value or Low Bid? Pre-qualification • Submittals • Pre-construction Conference • Pre-design?

Construction Drilling - Optimize drilling method - Specifications - Monitoring While Drilling (MWD. . . Manual or black box? Who Benefits? Courtesy of Structural Preservation Systems - The Driller & the Engineer Courtesy of Fondedile Quality Planning and/or Technical Manager Courtesy of DSI Courtesy of Thomas Herbst

Grouting Construction - Grouting Plan - Preconstruction Grout Property Characterization Testing (i. e. local variables) -Data Recording – real time - Grout assessment & fluidity – also real time verification. . . What about cubes/cylinders? ? Reinforcement - Grouting pressures & volumes - Sequence. . . - Sequence (i. e. connectivity) - Depth & Tolerances - Observe, Evaluate and Refine! - Splicing - Corrosion

Post Construction • Load Testing – Proof, Performance, Service or Sacrificial, System Testing • Non-Destructive Testing (i. e. PDA) Courtesy of Northwest University • Long-term Instrumentation & Monitoring • Exhumation • Record Drawings Polytechnic University

Closing Remarks 1. QA/QC is applicable throughout the project – from conception to completion and in-service performance 2. Focus on optimizing procedures (TQM) to assure best quality product 3. Emphasis on real-time monitoring as the engineering basis for logical modifications. Observation is key!