Building Codes Consultants: 22

As an arbitrator, structural/civil engineer, and expert forensic consultant with nearly four decades of experience, Casey Hemmatyar has provided extensive expert services for defendants’ and plaintiffs’ attorneys on numerous construction litigation matters throughout the United States and Canada.

He has been retained as an expert engineer in over one hundred litigation matters on single and class-action legal cases by the U.S. government, law firms, and insurance carriers at the State and Federal levels, working with both plaintiff and defendant sides.

A partial list of litigation cases is available upon request. His understanding of core engineering and legal concepts has enabled him to assist a wide range of clientele effectively. He brings diversified experience in structural and civil engineering design and forensic engineering, investigation, and evaluation.

He also conducts research, has assisted in the development of building codes and standards, and has supervised the construction of domestic and international projects. His experience includes special structures and new buildings as well as modifications, alterations, seismic/hurricane retrofits, and upgrades to existing structures. He has provided failure analysis, expert consultation, structural forensic investigation, and damage assessment services for numerous litigation and insurance-related matters.

He actively presents continuing education lectures to audiences of licensed engineers, architects, and general contractors on topics of structural and forensic engineering throughout North America. Mr. Hemmatyar has been the principal structural engineer on high-profile projects for prestigious clients, including NASA and other notable organizations.  Currently, he directs PSFEG and has served as Director for SEAOSC from 2011 to 2013.

His work encompasses a diverse range of structures, including hospitals,  educational institutions (including schools and universities), telecommunication centers, aviation facilities, government buildings, laboratories, as well as commercial, industrial, and residential structures.

Jeffrey Phillip Weinstein, AIA, a California licensed Architect and Construction Project Manager since 1982, with a Masters Degree in Real Estate Development from USC, is actively involved with development, design and construction management. Mr. Weinstein provides preconstruction (entitlements, plans, permits) through on-site construction administration services (change order analysis, cost evaluation) on a wide range of building types. 

Expertise: Mr. Weinstein has extensive experience in real estate development, acquiring government approvals, entitlements and permits, architect's standard of care, construction management, claims & defects, and A/E/C agreements. His expertise includes scope of services and design fees, zoning and building codes, errors/omissions, construction defects, destructive testing and repairs. 

Previous positions include Director of Operations, Preconstruction Director, Senior Project Manager, Construction Manager and Administrator for Nadel and Callison Architects, Tishman Construction, Trammel Crow Company, California State University and Goleta Valley Cottage Hospital.

 Project Experience: Mr. Weinstein's project experience includes high-rise residential and mixed-use developments, multi-family residential podium-type apartments and condominiums, retail, big box, neighborhood shopping centers and regional malls, corporate and tenant improvements, hospitality including wineries and breweries, themed resorts and casinos, K-12 and university buildings, hospitals and medical facilities, custom and production homes. 

Professional Licenses / Certifications / Affiliations:

• California Registered Architect, License #12822
• AIA Certified in Construction Management, Contract Administration and Specifications
• Member, American Institute of Architects, Urban Land Institute, Construction Specification Institute
• Member, North Santa Barbara County Board of Architectural Review

Professional Services Include:

• Architectural, Engineering and Construction (A/E/C) Project Management
• Owner’s Representative / Real Estate Development / LEED Design-Build
• Director of Operations and Pre-Construction Services / Construction Administrator
• Forensic Architect / Construction Expert Witness

View Jeffrey Weinstein's Expert Witness Profile.

Ronald Tyson is a Building and Premises Expert in the construction business for over 45 years.  He has years of hands on experience in the individual trades as a tradesman, subcontractor and general contractor.  

Mr. Tyson has been a Michigan licensed builder since 1967 and has functioned as a general contractor and provided supervisory tasks for Tyson Enterprises, Incorporated and other contractors on all types of industrial, public, commercial and residential construction projects since 1963. He is a member of numerous building code and standard authorities, including but not limited to IBC [BOCA, UBC] NFPA, IAEI, NAHB, etc.

Mr. Tyson's experience and expertise can help clients with contracts, safety, and other obligations as they may affect project control of contractors and/or project managers.  He can advise on the duties in new and remodeling construction and maintenance required by the premises owner.

Litigation Support - Mr. Tyson has served the legal community as a Construction Expert Witness for 35 years. He has worked for both plaintiff and defendant attorneys. He is available to perform onsite inspections, research, review litigation matters, makes drawings, interview litigants, and provides evidence for court, including correct building code and life safety statutes and standards as they may affect personal injury claims, construction, contracts, etc. and causation.  Mr. Tyson has never been disqualified in over 200 times in court.

Areas of Expertise:

Dale Wheeler is licensed in Fire Protection and Safety Engineering, and is certified in Basic Code Enforcement / Building Inspection by the Building Officials and Code Administrators (BOCA). He is published on fire safety in Atrium Buildings and in Exhibition Halls. Mr. Wheeler's Areas of Expertise include:

• Fire Protection System Design, installation and operation:
  - Fire detection
  - Smoke detection
  - Fire alarm
  - Central Station
  - Sprinkler systems
  - Fire suppression systems
  - Smoke control
• Fire and Smoke Barriers
• Building Code, Life Safety Code, and Fire Code Compliance
• Fire Hazard, Building Materials, Fire Resistance Ratings
• Fire Cause and Origin
• Arson
• Means of egress, egress signage, emergency lighting
• Forensic Fire and Fire Systems Investigation

Sunset Consultants is an Architectural and Engineering Management firm that provides professional strategic planning and management consulting services for various entities, including those that need help with planning or architectural projects. Sunset's clients include well-established design firms and new professionals learning the basics of running an independent business. Sunset provides the following services:

Principal, David J. Brotman, FAIA, is an accomplished Senior Executive with a proven career and solid experience in all aspects of Architectural and Engineering Firm Management. Mr. Brotman's skills include all facets of Architectural Practice. His worldwide, multi-million dollar project experience includes retail, office, hotel, institutional, and mixed-use. 

Mr. Brotman has a successful track record and expert qualifications in improving quality of work, market share, delivering strong revenue, and profit gains. His experience encompasses start-up, turnaround, high-growth, and multi-national operations. David Brotman holds a reputation among colleagues, subordinates, and associates for creative imagination, vision, team building, and leadership skills. He specializes in envisioning an end-result, then leading a management team to realize that result with marked improvements along the way.

 View David Brotman's Expert Witness Profile.

John D. Shepherd, RRC, RROis the principal of Shepherd Consulting Services, a Building Envelope, Roofing, Waterproofing, and Exterior Walls  construction forensic consulting firm, and the Building Envelope Institute, a firm that develops education programs for construction professionals (consultants, architects , engineers, con- tractors, etc.).

Mr. Shepherd has been consulting for more 26 years and has been active in the construction industry for over 50 years, including 10 as a roofing contractor. He is an IIBEC Registered Roof Consultant (RRC) and RRO, a Haag Certified Commer- cial/Residential Roof Inspector, and a certified building science thermographer. Over his career in the industry, Mr. Shepherd has conducted thousands of building envelope investigations including those related to leak investigations, construction defect, property assessment inspections, and property damage claims.

Through Thermal Imaging of America, a Division of Sheperd Consulting Services, Mr. Shepherd uses Thermal Imaging and various moisture meters to accurately locate the cause of moisture intrusion into a residential or commercial building. Mr. Shepherd is a noted author speaker in his field of expertise. He has been delivering presentations on Roofing and Waterproofing nationally for approximately 25 years. He has served on the board of directors for both RCI, Inc. and the SoCal Chapter of RCI, and has served on a number of committees in RCI/IIBEC and on ASTM International.

Consulting Services Include:

• Roof Surveys
• Replacement Cost Analysis
• Life Cycle Analysis
• Specification and Detail Review / Development
• Leak Investigations - Cause and Origin

View Expert Witness Profile.

Rieser Building Group is a leading builder, engineer, architect, and forensic team with over 25 years of experience in management, design, and construction of over 4,000 units. These units range from custom homes, commercial buildings, and developments, to public works like Caltrans and BART construction, and roadway improvements (over 500 miles). With a full breadth of professional development services, they manage all aspects of a project, from entitlements to design to warranty.

Building Services - Design in-house, or, as licensed engineering and construction professionals, Rieser Building Group can manage an outside team of architects, civil engineers, structural engineers, and landscape architects.

Engineering and Design Services - Spearheaded by a professional Engineering & Architectural team, Rieser provides innovative designs and timely approvals in custom homes, commercial buildings, apartments, large developments, structures, topo-mapping, hydraulics, traffic engineering, and transportation engineering.

Development Services - Developing single custom-built home or a multiphase project, Rieser will expedite the development process, establish a joint venture to share costs, or purchase the project. In addition to flexible management, they conduct property feasibility studies to calculate the right mix of homes and maximize ROI. 

Mark E. Rieser, II, MS, PE, AIA, GBC, GEC, has over 30 years of experience in the Construction and Building Design industry. He provides his clients with a comprehensive knowledge of Construction Technology and Construction Standards of Professional Practice. Background Experience - President of an active Design / Build company, Mr. Rieser has managed, designed, and constructed over 4,000 units to include high-rise, single family homes, condominiums, townhomes, podiums, apartments, and commercial buildings, His experience includes construction, management, and design of over 500 miles of asphalt and roadway improvements, tunnels, San Francisco Airport, Santa Clara Light Rail, Southern Pacific Railroad, Caltrain, and BART. Mr. Rieser has an insightful understanding of Civil / Structural Engineering, Soil Engineering, Transportation / Traffic Engineering, Hydraulic Engineering, Architectural Design, Asphalt Design, Cost Estimation, Public Works Design Bidding and Estimation, General Engineering, General Building, and an Accident Reconstruction expert.

View Mark Rieser's Expert Witness Profile.

Quilici Engineers, Inc. draws on over 35 years of Structural and Civil Engineering experience to deliver a wide range of design and support services, tailored to meet their clients' specific needs.

Consulting Services:

Structural and Civil Engineering - Providing the very highest quality, most cost-effective solutions that take advantage of our automated engineering design capabilities, delivered on time and to the highest standards. Includes Commercial Development, Residential Development, Luxury Residential, Remodeling Restoration.

Pool and Water Services - Compu-Pools, a subsidiary of Quilici Engineering, uses the latest technology to deliver calculations and drawings for pools, spas and water features. Specialties include deep or shallow foundations, expansive soils, and hillside construction. They can help with structural repairs, construction support and design.

On-Call Engineering Services - When safety or other factors require immediate response and quick turnaround for needs such as on-site investigation and remedial repairs. Specializing in Building Evaluations, Dry Rot and Decay Repair, Insurance Evaluation, Insurance Evaluations, Fire and Earthquake Repair, Construction Support, Municipal Processing, Construction Support 

Joseph A. Quilici, PE, CE, SE, CCI, is a Registered Structural and Civil Engineer in the state of California and is a Certified Construction Inspector. Mr. Quilici has over 35 years of experience in the construction industry. He has extensive knowledge of building codes and familiarity with innovative building systems.

Mr. Quilici's expertise includes consulting for pools and spas, restorations, commercial, industrial, and community developments, in addition to luxury homes and buildings. experienced with a diverse range of building materials, including tilt-up concrete, structural  steel, post-tensioned concrete, concrete masonry, foam block, light gauge steel, and timber.

Qualifications:

• Licensed Structural Engineer, 36 years, 1986
• Licensed Civil Engineer, 40 years, 1982
• University of California, Berkeley, MS Civil Engineering - Structures, 1980
• US Green Building Counsel LEED, Accredited Professional, May 2009
• US Build it Green, Certified Green Building Professional, September 2009
•  Forensic Expert Witness Association Board of Directors - Past President
• Board Certified Forensic Litigation Consultant

View Joseph A. Quilici's Expert Witness Profile.

Isaak Technologies provides expert witness, consulting & training services in the areas of design, construction, procurement, implementation, commissioning and operations of information technology, telecommunications, network systems and critical data center facilities. Isaak Technologies provides clear solutions to complex challenges using best-practice forecasting, strategy & risk mitigation. 

Philip J. Isaak, PE, P.Eng., DCDC, RCDD, SMIEEE, has over 20 years of experience as a design & operations consultant & training provider, with a focus in the information technology, telecommunications & critical data center facility industries. 

In recognition of Mr. Isaak’s professional standing, the Officers & Board of Directors of the Institute of Electrical & Electronic Engineers (IEEE), the world’s largest professional association for advancement of technology, certified his election to the grade of Senior Member, a level only 9% of IEEE’s over 400,000 global members hold. 

Professional Services:

View Philip Isaak's Expert Witness Profile.

Dr. Fari Barzegar is a Licensed Engineer with 37 years of experience in Civil and Structural Engineering & Construction Forensics, Construction Project Management, university teaching/research. He has been an Expert Consultant / Witness in over 100-cases.

Litigation-Support Consulting Expert Witness with testimony and trial experience. Has been retained by insurance companies, law firms, construction, energy, mining, technology & manufacturing industries, governmental & educational institutions, engineering and architectural firms, property owners and individuals. Consultant in both plaintiff and defendant cases.

• Insurance & Surety Claims, Peer Reviews
• Buildings, Structures & Materials: Residential, Commercial, Institutional, Historic Structures; Bridges, Towers, Stacks/Chimneys, Containment Vessels, Tanks, Grain Silos, Conduits & Pipelines, Retaining Walls, Foundations, Slabs & Pavements; Concrete, Steel, FRP Composites, Wood, CMU, Brick Masonry & Adobe
• Design / Construction / Integrity issues, Seismic Resistant Design; Errors & Omissions;Standards of Care; Repair & Retrofit Design Documents
• Construction Defects & Accidents; Defective Concrete; OSHA Standards, Excavations / Trenching / Scaffolds
• Slip/Trip/Fall, Code Compliance
• Damage & Failure Investigation; Due Diligence; Non-Destructive Testing 
• Explosion, Impact, Earthquake, Wind, Fire, Hurricane & Flood Damage Inspections / Analysis/Report
• Pile Driving & Demolition Damage to Adjacent Facilities: Vibrations, Cracking / Settlement
• Dynamic, Fracture, Thermal & Finite Element Stress Analysis; Product Design; Failure Simulation / Reconstruction
• Intellectual Property & Patent Infringement

Roger W. Griffith, PE, has over 37 years of professional experience as a Mechanical Engineer in the design, maintenance, and operation of mechanical systems. He specializes in the areas of Plumbing, HVAC, and Fire Sprinkler Systems Design.

Background - As the principal of Griffith Engineering & Consulting for 23 years, his design experience with commercial and industrial projects include convention centers, schools, office buildings, condominiums, apartment buildings, hotels, churches, manufacturing facilities, medical buildings, restaurants, historic buildings, dormitories, fire halls, and maintenance facilities. Prior to that, Mr. Griffith worked at the Tennessee Valley Authority (TVA) as a mechanical engineer for 14 years. 

His roles at TVA included nuclear piping analyst, valve and heat exchanger specialist, maintenance engineer, and later maintenance supervisor at a fossil plant, and quality manager. His engineering roles included failure analysis of plant equipment. He also taught many courses on the subject of problem-solving and failure analysis for company employees.

Consulting Services:

View Roger W. Griffith's Expert Witness Profile.

Expanded Resources LLC is a construction management consulting firm serving the legal and construction industries.

Expert Witness Services

At Expanded Resources, we bridge the gap between construction complexity and clarity. With decades of boots-on-the-ground experience—and a teaching background —we know how to translate multifaceted issues into easily understandable narratives. You’re not just getting an expert. You’re gaining a guide who understands and explains complex construction matters with clarity and conviction.

Construction Management Consulting

We help organizations manage their construction portfolios, programs, and projects more efficiently.

We start by listening. Through targeted interviews, surveys, and meetings with stakeholders at every level—from senior leadership to field staff—we uncover how your teams really operate.

We dig into your systems, documents, and workflows to pinpoint gaps, bottlenecks, and inconsistencies. Whether it’s outdated software, mismatched forms, or policies no one follows, we find what’s not working—and why.

Next, we deliver a clear roadmap tailored to your organization. Think of it as an operating manual, grounded in contract compliance and practical experience. 

Implementation isn’t left to chance. We build your team's capability through guided training, toolkits, and change support. Whether onboarding new project managers or retooling seasoned teams, we help embed the right habits across your organization.

Kiwesa King, PE, CCM, DBIA, PMP, is a Licensed Professional Engineer and a Certified Construction Manager and Trainer.

Ms. King has managed restoration, renovation, and ground-up construction projects as a designer, subcontractor, general contractor, and construction manager. She teaches graduate and continuing education courses in Construction Management at Fordham University and New York University.

Degrees and Certifications:

• New York State Licensed Professional Engineer
• Bachelor of Science and Master of Science in Mechanical Engineering
• Certificate of Competence- Master Fire Suppression Contractor - New York City Department of Buildings (NYCDOB)
• Site Safety Manager: NYCDOB
• Certified Construction Manager: Construction Management Association of America
• Designated Design-Build Professional:  Design-Build Institute of America
• Project Management Professional: PMI

View Kiwesa King's Expert Witness Profile.

• Over 35 years of experience in Mechanical / Structural Engineering & Design, Failure Analysis, Product Liability, Industural Asbestos,Pressure Vessel & Boiler analysis and evaluation of mechanical and structural components.
• Extensive trial experience. Has been involved in multi-million dollar cases. Areas involved included:

  
  

  - Piping & pipe supports - Structural failure of products - Failure analysis - Industrial asbestos - Seismic analysis - Fire protection - Pressure vessels

  - Tanks - Construction - Heat transfer analysis - Environmental qualification of equipment - Welding - Product design - Patent information

• Expertise in developing litigation rate-case exhibits and detailed supporting testimony, and in organizing case documentation into easy-to-use computer databases for trial use.

DM Bekus Construction is a New Jersey Home Design, Construction, and Remodeling Contractor. For over 30 years they've been helping homeowners throughout the area improve properties and build homes. DM Bekus Construction delivers high quality, reliable construction services that help homeowners get more pleasure and enjoyment from their homes and buildings.

Services Include:

Principal, David M. Bekus has over 35 years in the Construction Industry specializing in home design, construction, and remodeling. He offers services to homeowner associations, housing communities, townhome complexes, property managers, and individuals. Mr. Bekus is licensed by the State of New Jersey as a building inspector (RCS, ICS, and HHS), a licensed home remodeler, and a licensed new home builder. He is also certified in Project Management, Cost Estimating, Construction Methods, Construction Site Safety, and is a EPA Lead Safe Certified Contractor. Mr. Bekus has been a project manager, overseeing all aspects of construction from conception and approvals to final sales for single homes and developments. He has designed and built over 100 custom homes.

View David Bekus' Expert Witness Profile.

Construction Strategies provides a complete range of Construction and Construction Consulting services. They offer pre-construction services for owners considering future projects who need assistance in evaluating the feasibility and conceptual costs. Construction Strategies also offers post construction services for owners who are facing close out problems including conflict resolution, mediation assistance, close out service completion, punch lists, and warranty assistance.

Principal, Sanford C. Loy , CCM, B.Arch, MSCE, has over 40 years of experience in the Construction Industry. Mr. Loy has Degrees in Architecture and Engineering. A Certified Construction Manager (CCM), he is committed to the Code of Ethics and Standards of Professional Practice established by the Construction Management Association of America. CCM is the ANSI accredited professional designation for construction management and is the gold standard for CM service providers in over 145 countries.

Background Experience - Mr. Loy's experience spans virtually every type of building and design process. His strength centers on his understanding of the dynamics and interactions of the various trades and professions unique to every building project. He has experience with Construction Management at Risk, Construction Management Agency, Design-build, and Design-bid-build. Having successfully managed the completion of over one billion dollars of construction, Mr. Loy served as a Regional Engineer for the American Institute of Steel Construction and as Director of Construction and Development for Belz Enterprises, the largest development company in Tennessee, before founding Construction Strategies in 1988.

See more at our website: https://www.construction-strategies.com

View Sanford Loy's Expert Witness Profile.