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  • Home
  • About GlassRatner
    • Overview
    • News and Press Releases
    • Case Studies
    • GlassRatner Articles
    • Employment Opportunities
  • Expert Services
    • Construction Claims & Disputes
      • Construction Delay Claims
      • Labor Productivity Claims
      • Design and Construction Defect Claims
      • Force Majeure Claims
      • Acceleration Claims
      • Suspension and Termination Claims
      • Differing Site Conditions Claims
      • Change Claims
    • Construction Defects
    • CPM Schedule Analysis
      • Windows Analysis or Contemporaneous Period Analysis
      • Time Impact Analysis (TIA)
      • Collapsed As-Built
      • Impacted As-Planned
      • As-Planned vs. As-Built
    • Construction Management
      • Contract Administration
      • Implementation of Project Controls
      • Execution of Processes and Procedures
      • Change Management
      • Risk Management
    • Litigation & Arbitration
      • Prudence Evaluation Experts
      • International Arbitration Construction Experts
      • Labor Productivity Analysis Experts
      • Schedule Delay Experts
      • Damage Quantification Experts
      • Design & Construction Defects Experts
      • Acceleration Experts
      • Suspension & Termination Experts
      • Force Majeure Experts
      • Differing Site Conditions Experts
      • Construction Change Experts
      • Standard of Care
    • Project Advisory
      • Construction Readiness Assessment
      • Contracting Strategy Development
      • Cost Risk Assessment
      • Project Audit
      • Project Execution Planning
      • Project Framing
    • Occupational Injury/Incident Analysis
  • Industries Served
    • Buildings & Facilities
      • Buildings
        • Education
        • Government Buildings
        • Commercial Buildings
        • Retail
      • Healthcare
      • Entertainment, Sports & Convention Centers
      • Industrial & Manufacturing
      • Multifamily Housing & Hotels
        • Multifamily Housing
        • Hotels
    • Transportation & Infrastructure
      • Airports
      • Heavy Civil
      • Roads, Highways, Bridges & Rail
      • Utilities
      • Water & Wastewater Treatment
    • Oil & Gas Pipelines
      • Land Pipelines
      • Subsea Pipelines
    • Marine & Offshore Production
      • Offshore
      • Ports, Piers & Wharfs
      • Shipbuilding & Vessels
    • Power & Energy
    • Chemical & Petrochemical
    • LNG & NGL
    • Oil & Gas Processing
    • Refining
    • Megaprojects
  • GlassRatner Experts
    • Sam Barakat, PE, Esq., PSP
    • Lisa Sumner Heard
    • Dennis R. Jasinski, Fellow – ICCP
    • Karen P. Matthews
    • Nicholas V. Ninan, CCP
    • Gabriel Paglicawan
    • Tapan Patni
    • Christopher J. Sullivan
    • Philip D. Barnard, PE
    • David Frinsco
    • Michael T. Gunter, PE, EVP
    • Michael A. Jorgenson, PMP
    • Chad P. Kirlin, PE, PMP
    • Greg Lamberson
    • Pete D. Luan, PMP
    • Charles W. Miller
    • Carolyn L. Morgan, CPA
    • Sean P. Pellegrino, PE
    • Leslie Rucker, CSP
    • Rodney Crawford, CPA
    • Joel Murovitz, LEED AP
  • Contact Us
  • Client Login

GlassRatner Experts

GlassRatner’s (formerly Interface Consulting) primary resource is our exceptional staff of highly qualified and experienced construction experts and consultants. Each consultant offers a unique combination of technical expertise and capabilities to address our clients’ challenges. We cultivate an atmosphere of creative thinking which maximizes our potential to provide innovative solutions, simplify complex issues, or give strategic guidance to meet our clients’ objectives.

CJS-Portrait-2
Christopher J. Sullivan
SENIOR MANAGING DIRECTOR
MBA, BS – Chemical Engineering
Houston Office
Lisa Sumner Heard
Lisa Sumner Heard
SENIOR MANAGING DIRECTOR
BA – Government and Psychology
Houston Office
KPM-Portrait-3
Karen P. Matthews
MANAGING DIRECTOR
MA – English, BA – English
Houston Office
Dennis R. Jasinski, Fellow – ICCP
MANAGING DIRECTOR
BS – Civil Engineering Technology, AS – Architectural & Building Engineering Technology
Houston Office
Sam barakat Cropped for Web
Sam Barakat, PE, Esq., PSP
MANAGING DIRECTOR
Juris Doctorate, MS – Structural Engineering , BS – Civil Engineering
Phoenix Office
Nicholas V. Ninan, CCP
Nicholas V. Ninan, CCP
SENIOR ASSOCIATE
MBA, BS – Mechanical Engineering
Houston Office
Gabriel Paglicawan
Gabriel Paglicawan
SENIOR ASSOCIATE
BS – Mechanical Engineering
Houston Office
Tapan Patni
Tapan Patni
DIRECTOR
BS – Mechanical Engineering
Houston Office
Philip D. Barnard, PE
Philip D. Barnard, PE
SENIOR ADVISOR
BS – Civil Engineering
Houston Office
David Frinsco
David Frinsco
SENIOR ASSOCIATE CONSULTANT
Houston Office
Michael T. Gunter, PE, EVP
Michael T. Gunter, PE, EVP
SENIOR ASSOCIATE CONSULTANT
BS – Mechanical Engineering
Houston Office
Michael A. Jorgenson, PMP
Michael A. Jorgenson, PMP
SENIOR ASSOCIATE CONSULTANT
BS – Civil Engineering
Houston Office
Chad Kirlin Cropped for Web
Chad P. Kirlin, PE, PMP
SENIOR ASSOCIATE CONSULTANT
MS – Mechanical Engineering , BS – Forestry Products
Vail, Arizona Office
Greg Lamberson
Greg Lamberson
SENIOR ASSOCIATE CONSULTANT
MBA, BS – Industrial Engineering and Technology
Houston Office
Inerface 2022-13-Edit-Edit_web crop
Pete D. Luan, PMP
SENIOR ASSOCIATE CONSULTANT
MS – Mechanical Engineering, BS – Mechanical Engineering
Houston Office
Charles W. Miller
Charles W. Miller
SENIOR ASSOCIATE CONSULTANT
BS – Electrical Engineering
Houston Office
CLM AIBG
Carolyn L. Morgan, CPA
SENIOR ADVISOR
BBA – Accounting
Houston Office
Sean P. Pellegrino, PE
Sean P. Pellegrino, PE
SENIOR ASSOCIATE CONSULTANT
MS, Engineering Management – University of Houston
BS, Mining Engineering – University of Pittsburgh
Houston Office
Leslie Rucker, CSP
Leslie Rucker, CSP
SENIOR ASSOCIATE CONSULTANT
MS – Environmental Management, MPH – Occupational Health and Industrial Hygiene, BS – Biological Sciences
Houston Office
Rod Crawford
Rodney Crawford, CPA
SENIOR MANAGING DIRECTOR
BS, Business Administration – Central Michigan University
Detroit Office
Joel Murovitz, LEED AP
Joel Murovitz, LEED AP
DIRECTOR – COURT-APPOINTED RECEIVER
MBA – Georgia Institute of Technology
BS, Civil Engineering – Georgia Institute of Technology
Atlanta Office
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GlassRatner (Formerly Interface Consulting) provides a portfolio of professional support services to a wide range of clients including owners, contractors, attorneys, engineers, insurers, and suppliers involved in the engineering and construction process.

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  • Houston, TX 77057
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