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GeoConSol
Geotechnical & Tunnel Consultants

A consultant is a universal observer who can look at a problem outside the environment in which the problem came to be, thereby creating a solution that was never possible before. Fernando Flores

EXPERT / FORENSIC SERVICES

DIFFERING SITE CONDITIONS

-->DSC Technical Principles

-->DSC Standards for Entitlement

-->DSC Independent Review

-->DSC Case Histories

GEOTECHNICAL / CONSTRUCTION

-->Rock Testing/Boreability

-->Impact Hammer Feasibility

ARTICLES / PUBLICATIONS

TUNNELS / TUNNELING

-->Tunnel Boring

-->Excavation Improvement

-->Microtunneling/Pipe-Jacking

-->Selection of TBMs & MTBMs

-->Forensic Investigations

-->Detection of Covert Tunnels

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Peter J. Tarkoy

Microtunneling / Microtunnelling
Pipe Jacking

Assessment of feasibility, project cost, and risk
Microtunneling specifications to project specific conditions
Contract plans & specifications and contract requirements
Cost / risk reduction
Pre-bid assessment of boreability and equipment selection
Assessment of encountered materials, conditions, and behavior
Higher rock, more rock, and rock when soil was anticipated
Performance below expectations
Machine failures, causes, and liabilities
Differing Site Conditions (DSC) and claims
Forensic investigations, machine failures, operational problems