U S FHWA MICROPILE PRACTICE AND UPDATE Implementation

U. S. (FHWA) MICROPILE PRACTICE AND UPDATE “ Implementation Manual & Teaching Modules” TOM A. ARMOUR, P. E. SESSION VII CODES, STANDARDS AND GUIDELINES IWM 2002 MAY 29 – JUNE 1, 2002

REFERENCE PROGRAMS “Funded by FHWA to Speed Up the Implementation of Micropiles” n State of the Practice Review (Step 1) -1997 n Design and Construction Implementation Manual (Step 2) - 2000 n National Technical Workshop (Step 3) - 2002

IMPLEMENTATION MANUAL - (STEP 2) “Recommended Guidelines” n Micropile Definition & Classification System n Micropile Design Guidelines n Service Load Design n Load Factor Design n Load Testing Recommendations n Quality Assurance Quality Control (QA/QC) n Contracting Methods n Owner Controlled Design n Contractor Design/Build n Guideline Specifications n Alternative Procurement Methods n Micropile Contractor Prequalification n Geotechnical Design Summary n Contractor Submittals n Pile Load Testing n Measurement and Payment

NATIONAL TECHNICAL WORKSHOP- (STEP 3) “Training Module” n Primary Objective To develop a national technical workshop targeted at Federal and State Dept. of Transportation specialists involved in design, construction and specification development for transportation facilities. n

NATIONAL TECHNICAL WORKSHOP- (STEP 3) “Training Module” n Other Objectives 1. Introduce micropile technology 2. Present site investigation, load testing and QA/QC recommendations 3. Present comprehensive design methods 4. Provide example plans and guideline specifications

NATIONAL TECHNICAL WORKSHOP- (STEP 3) “Training Module” n Important Statistics n Contractor is ADSC – “The Industry” n 15 month contract to complete module n 2 - Day Training Course n 75 training courses anticipated to be taught throughout USA over next 3 - 4 years

USA MICROPILE PRACTICE “Where We Are Today” n No AASHTO Approval n 2001 AASHTO LRFD Highway Bridge Construction Specifications n Public Agencies gaining knowledge with increased use n Specialty Contractors still leading the charge in the development and specification of micropile applications n FHWA/Industry increasing micropile focus through ADSC/DFI

INDUSTRY UPDATE “Current Works In Progress” n Industry Seminars n Industry Short Courses n Operator Training Courses n Inspector Training/Certification n Design/Construction Training Modules

INDUSTRY UPDATE (con’t) “Current Works In Progress” n Regional Educational Presentations n Regional Technical Assistance n Research & Development n IWM

INDUSTRY UPDATE (con’t) “Current Works In Progress” n Fund Raising n Technical Library n Practice Updates n Public Relations n DFI Coordination