1. Ground Improvement Technology – Micropiles FHWA Short Course Dr
Ground Improvement Technology – Micropiles FHWA Short Course Dr. Donald A. Bruce

2. Ground Improvement Technology – Micropiles: FHWA Short Course
Contract awarded to ADSC by FHWA.
Course developed by Geosystems, geotechnica, and Schnabel Engineering under direction of Barry Siel (FHWA).
Based on FHWA Implementation Manual (DBM).
Deliverables
Participant’s Workbook
Instructor’s Guide
“Walk Through” (FHWA in D.C.)
Demonstration (WA State DOT)
Course now transferred to NHI

3. Contents of the Course (1½ days of teaching)
Lesson 1: Introduction (45 mins)
Lesson 2: Definitions, Background, and Classification (Chapters 1 and 2 of Manual) (30 mins)
Lesson 3 – Applicability and Applications (Chapter 3 of Manual) (45 mins)
Lesson 4 – Construction Techniques and Materials (Chapter 4 of Manual) (60 mins)

4. Contents of the Course (continued)
Lesson 5 – Design Basics – Structural Support (150 mins)
Lesson 6 – Design for Slope Stabilization and Earth Retention (30 mins)
Lesson 7 – Pile Load Testing (Chapter 7 of Manual) (45 mins)
Lesson 8 – Construction Inspection – Quality Control (Chapter 8 of Manual) (30 mins)

5. Contents of the Course (continued)
Lesson 9 – Contracting Method (Chapter 9 of Manual) (20 mins)
Lesson 10 – Feasibility and Cost Data (Chapter 10 of Manual) (20 mins)
Lesson 11 – Review of Ongoing Research (20 mins)
Lesson 12 – Team Exercise (60 mins)
Closure (15 mins)

6. Objectives of Lesson 1
Participants will gain insight to the nature and structure of the course and an awareness of the organizations and participants involved

7. Contents of Lesson 1 1.1 Introduction of Instructors
1.2 Introduction of Participants
1.3 Course Administrative issues
1.4 Information about FHWA
1.5 Information about ADSC
1.6 Structure of this Course
1.7 Micropile Questionnaire for Participants
1.8 Review of Team Exercise
1.9 Presentation by Host State

8. Structure of this Course (cont.)
1.6.2 Course Materials
Implementation Manual - Micropile Design and Construction Guidelines
Revised Chapter 6 of Implementation Manual
Copy of Instructor’s Visuals (Participant Workbook)
Team Exercise Workbook
1.6.3 Other Materials
Course Agenda
Micropile Prior Usage Questionnaire
Course Evaluation Form

9. 1.7 Micropile Questionnaire for Participants
Purpose: To identify individual and collective experience and needs
Method:
Completed questionnaires will be collected at the end of the first coffee break and the results tabulated during lunch break.
The tabulated results will be revisited at different points throughout the lessons following lunch break.
Instructor distributes micropile questionnaire to participants duirng this slide.

10. 1.8 Team Exercise Handout (refer to Team Exercise Workbook)
Select Teams
Purpose of Exercise – apply all lessons throughout workshop
Team work products for this exercise will be presented in Lesson 12 followed by an evaluation of the exercise
Review the team exercise with the participants and ask if there are any questions relating to the exercise requirements.
State that different portions of the exercise should be completed (or at least discussed) by the teams as the lessons apply throughout the 1½ days of the workshop and that the final product will be developed and presented by the teams at the end of the workshop during Lesson 12.

11. 1.9 Presentation by Host State
Experiences (good and bad)
Good
Bad
Lessons learned so far
Reliance on existing FHWA/AASHTO documents
Department attitude to use
Reasons for
Growth in use?
Lack of use?
Main Departmental learning goals from this Workshop
In advance of the workshop, this list will be sent to the Host State to guide the structure of their presentation. Handouts are encouraged. Time should be strictly limited (10 to 20 minutes) to ensure that this first lesson does not overrun.

12. Learning Objectives of Lesson 1
Gain insight to the nature and structure of the course and an awareness of the organizations and participants involved
Were the learning objectives of Lesson 1 met?

13. Advantages of Micropiles
High capacity and surprisingly high stiffness
Installation imparts minimal disturbance to adjacent structures, soil and the environment by noise and vibrations
May be installed in access-restrictive environments
May be installed in all soil and fill conditions types and ground conditions (e.g., boulders, fills, karst, variably weathered rock, high water table)
Bring up only the heading of the slide first. Before making the list of advantages appear on the slide, solicit participant interaction by asking what they think the advantages may be and list the responses on a flip chart. Compare the responses to the advantages listed on this and the following slide.
Instructor should mention other types of piling (e.g., continuous flight augers) or ground treatment (e.g., jet grouting) as alternative solutions. Micropiles are not the best solution for every job.

14. CASE 2 Micropile Arrangements
Point out for the tower structure that by installing the reticulated micropile system, the structure becomes integrated with the underlying soil mass, the resulting center of gravity is lowered and therefore greater stability for the structure is achieved