J. Douglas Wallace is a Roofing Industry Expert with over 35 years of experience specializing in Roofing Systems Analysis.
William John Associates (WJA) was founded by Mr. Wallace in 1980 in response to a need for a company to provide accurate and unbiased information of a full range of roofing issues. Mr. Wallace and Mr. Joel Hammock have over 60 combined years of roofing experience, and incorporate a detailed knowledge of roofing systems and installation procedures that differentiates WJA from other more theoretically oriented companies in the industry.
Corporate Clients include: Kerzner International, Walker & Co, Lougheed Resources Group, Starwood Properties, Vestcor Construction, SSW & Bush Construction, The Bove Company, Orlando Museum of Art, H.J. High Construction, Wood Partners, JDR Construction, Alliance Residential, United Dominion Realty Trust, The Roberston Group.
Litigation Support - Mr. Wallace provides expert witness testimony and arbitration related services for cases involving Roofing Failure. He also offers unbiased professional inspections to help the insurance industry identify sources of damage, whether repairs or replacement may be necessary, and associated costs involved. WJA currently work for over 40 insurance companies and have conducted over 40,000 inspections throughout Florida and from Arizona to the Carolinas.
Areas of Expertise:
Jeffery H. Warren, PhD, PE, CSP is Chief Engineer and CEO of The Warren Group. A licensed professional engineer in 14 states, he holds a Bachelor of Science in Mechanical Engineering from the University of North Carolina as well as a Master of Science and a Doctorate in Mechanical Engineering from Virginia Polytechnic Institute and State University — all with machine design emphasis.
Background Experience - A former research engineer for DuPont at the Savannah River Laboratory, Dr. Warren designed, patented, and built an incinerator to burn radioactive waste. He also taught mathematics and engineering at the University of South Carolina in Aiken. Later, Dr. Warren was chief machine designer and owner of Warren Engineering Company, Inc., which designed and built special machinery for manufacturing automation. He combined his passion for keeping people safe with his knowledge of mechanical engineering, machine design, risk assessment, and safety to pursue a career in forensic engineering.
Dr. Warren is a Certified Safety Professional in engineering aspects and a Certified Fire and Explosion Investigator. He has investigated more than 2,000 claims involving property damage and injuries related to machinery, equipment, and products since 1987. Dr. Warren is a court-qualified expert in mechanical engineering, machine design, risk assessment, and safety. He’s also testified in several hundred depositions and more than 75 trials in state and federal court. He has successfully passed Daubert challenges. Dr. Warren was on the committee that authored the ANSI Technical Report, ANSI B11.TR3-2000 entitled, “Risk Assessment and Risk Reduction – A Guide to Estimate, Evaluate and Reduce Risks Associated with Machine Tools.” He regularly investigates personal injury and wrongful death product liability claims as well as property damage claims involving machinery and equipment in both manufacturing and construction workplaces for both the plaintiff and the defense. He has a reputation for thoroughly analyzing each case to provide precise, understandable, fact-based opinions.
Dr. Warren has a way of making complicated mechanical engineering, machine design, risk assessment and safety concepts understandable to the ordinary person. He also presents classes and seminars on topics ranging from investigation of machinery and equipment, unintentional injury claims, subrogation and SAFETYTHROUGHDESIGN®.
Areas of Expertise:
Expert Technical Advisory Supervision and Approval of Fabrication Programs Forensic Engineering Third Party Reviews, Audits and Certification Troubleshooting Project Management Technical Due Diligence Incident Response
Litigation Support - Mr. Stein Offers consulting and expert services for attorneys on issues regarding road, street, highway, temporary traffic control, runway, and earthwork; asphalt, concrete, coatings and other construction materials; designs, plans, specifications, CPM scheduling (Primavera) and contract documents; right-of-way issues; and work zone safety. Licensed in Louisiana, Pennsylvania, and Texas, he performs contract performance forensic investigations and provides consulting, expert reports, rebuttals, and testimony if required.
Areas of Expertise:
|Failure Analysis||Accident Reconstruction|
|Fire & Explosion Analysis||........Safety|
Joseph Quinn, MS, PE, is a Forensic Metallurgy and Metallurgical Engineering consultant. Mr. Quinn is a Registered Professional Engineer in 5 states and has provided over 1,000 Failure Analysis investigations on metallic and non-metallic (glass, plastic, rubber, and composite) materials or products. Mr. Quinn provides metallurgical and materials consultation, expert witness testimony, and forensic failure analysis for civil litigation (with retentions by defendants and plaintiffs) insurance claims, and industrial failures. He has received awards in the International Metallographic Contest and has conducted several presentations on metallurgical engineering and failure analysis subjects at universities, ASM meetings, and industry events; and is active in technical societies and committees.
Product Area Failure Expertise:
W. Tom Thweatt is a Senior Principal with Long International and has over 40 years of engineering, construction, and management consulting experience. He has extensive experience in major U.S. and international refining, chemical, petrochemical, offshore oil & gas development, pipeline, infrastructure, and thermal / hydroelectric power generation projects ranging from US$40 million to US$12 billion. He has worked extensively in projects that were executed by multi-national joint ventures on both the owner’s and the contractor’s sides. Mr. Thweatt has served on Joint Venture and Consortium Executive Committees and has participated directly in claims negotiations and settlement agreements in excess of US$100 million.
|Philip J. Isaak, PE, P.Eng., DCDC, RCDD, SMIEEE, is an expert witness, consultant & trainer in the design, construction, procurement, implementation, commissioning & operations of information technology, telecommunications & critical data center facilities. Mr. Isaak provides clear analysis for complex disputes, incorporating industry standards, best-practices and over 20 years of consulting & training expertise working with clients located in 28 countries and territories across 6 continents.
In recognition of Mr. Isaak’s professional standing, the Institute of Electrical & Electronic Engineers (IEEE), the world’s largest professional association for advancement of technology, certified him to the grade of Senior Member, a level only 9% of IEEE’s over 400,000 global members hold. Mr. Isaak is also an author of several industry standards published by TIA & ANSI/BICSI, whitepapers published by The Green Grid, and the Data Center Handbook published by John Wiley & Sons.
|Expert Witness Services||Areas of Expertise|