4th International Workshop on Micropiles, Venice, Italy, 2002 Session I: Welcome and Introductions Chair: Dr. Donald Bruce •Renato Fiorotto (Italy) •Dr. Donald Bruce (U.S.A.) •Albert DiMillio (U.S.A.) •Prof. Masaru Hoshiya (Japan) •Scot Litke (U.S.A.) •Prof. Ilan Juran (U.S.A.) •Dr. Thomas Herbst (Germany) •Keynote Lecture by Prof. Fedele Lizzi (Italy), son of Dr. Fernando Lizzi Session II: Historical Development of Micropiles and Retrospectives on Past IWMs Chair: Prof. Roger Frank, Secretary: Masao Sagara •Highlights from the First Idea of a Root Pile to the European Standard on Micropiles (Dr. Thomas Herbst) •Overview of Past IWMs (Prof. Roger Frank) •Seattle, 1997 (Prof. Fred Kulhawy) •Ube, 1999 (Prof. Masaru Hoshiya) •Turku, 2000 (Pasi Korkeakoski) •Lille, 2001 (Prof. Isam Shahrour) Session III: Recent Case Histories on Structural Support and Seismic Applications (1) Chairs: Horst Aschenbroich, Secretary: Paul Woodfield •Seismic Upgrade Hewlett Packard Building 5 (Tom Armour) •The Structure of Self-Drilling and Dynamic Grouted Micropiles Titan (Ernst Ischebeck) •Grout Injection Bored Micropiles for Structural Support, Seismic Upgrading and Bank Stabilization in the U.S.A. (Horst Aschenbroich) •High Capacity Micropiles for Seismic Upgrade of the Richmond-San Rafael Bridge (Michael Hadzariga) •Central Artery/Tunnel Project Contract C09C1 U.S. Interstate 90 and Interstate 93 Interchange (Peter Iovino) Session IV: Recent Case Histories on Structural Support and Seismic Applications (2) Chair: Robert Traylor, Secretary: Paul Woodfield •Use of Micropiles for Forepoling in Tunnels (Renato Fiorotto) •Stabilizing Bridge Caissons using Micropiles - Case History (Douglas Heenan) •Dulles Airport Caisson Augmentation (Allen Cadden) •Soilex Casing Pile (Staffan Wetterling) •Hybrid Pile Applications (Paul Woodfield) •Central Artery/Tunnel Project Contract C19E1 Leverett Circle Connector - Bridge Pier (Peter Iovino) Session V: In Situ Reinforcement and Networks Design, Construction and Case Histories Chair: James Mason, Secretary: Prof. Isam Shahrour •Full Scale Field Tests on Single Micropiles and Groups/Networks of Titan Micropiles and Future Initiatives (Dr. Donald Bruce and Gary Weinstein) •In Situ Load Test of High Capacity Micropiles for a Foundation on Mountainous Terrain (Masao Sagara) •In Situ Reinforcement of Slopes Using Micropiles (John Wolosick) •Some Observations on Reticulated Micropile Groups (Prof. Fred Kulhawy) •A Discussion of Lizzi's Design of a Reticulated Retaining Wall (James Mason) Session VI: Detailed Seismic Design and Performance Issues Chair: Prof. Illan Juan, Secretary: Prof. Fusanori Mirua •Probability study for a High-Capacity Micropile Bearing Mechanism (Prof. Masaru Hoshiya) •Micropile Response to Hector Mine Earthquake (Walt Vanderpool) •Horizontal Loading Tests on Model Foundations Retrofitted by Micropiles (Masahiro Nishitani) •The Centrifugal Model Test on Pile Group Effect of the Pile Foundation Reinforced by the Micropile (Masashi Itani) •Some Typical Exaples of Damage to Pile Foundations by the 1995 Hyougoken-Nanbu Earthquake (Prof. Fusanori Miura) Session VII: Codes, Standards and Guidelines Chair: Dr. Thomas Herbst, Secretary: Allen Cadden •French Code (Prof. Isam Shahrour) •Eurocode (Dr. Thomas Herbst) •Japanese Code/Design (Dr. Jiro Fukui) •DFI Guidelines (Tom Richards) •U.S. (FHWA) Micropile Practice and Update - "Implementation Manual and Teaching Modules" (Tom Armour) •U.K. Specifications (Paul Woodfield) •Buckling of Micropiles (Allen Cadden) Session VIII: Workshop Chair: Prof. Ilan Juran , Secretary: Gary Weinstein •Breakout sessions with team activity Session IX: Research Programs •FOREVER (Prof. Roger Frank) •Research Programs in Japan (Dr. Jiro Fukui) •FHWA Pooled Fund Study (Tom Shantz) •Washington State University (Prof. Adrian Rodriguez-Marek) •Northwestern University (Prof. Richard Finno) •University of Missouri (Prof. Erik Loehr) •Rautaruukki (Finland) (Hannu Jokiniemi) •Skanska (U.K.) (Philip Ball) Session X: Review of the Workshop and Discussion of Future Directions •Chair: Tom Armour, Secretary Scot Litke •Session III (Horst Aschenbroich) •Session IV (Bob Traylor) •Session V (James Mason) •Session VI (Prof. Ilan Juran) •Session VII (Dr. Thomas Herbst) •Session VIII (Prof. Ilan Juran) •Session IX (Al DiMillio •Discussion of micropile organizations, applications, research needs, conferences and markets Closing (Dr. Donald Bruce)