Brent R. Leisenring, P.E. Civil Engineer & Construction Safety Expert

Brent R. Leisenring, Civil Engineer & Construction Safety Expert

Brent has provided engineered solutions to complex rigging projects across the country, he's managed construction projects for the Pennsylvania Turnpike Commission, and he's provided engineering and on-site management for the jacking of the twin 1,200 ton roof trusses on the Bank One Ballpark Stadium roof in Phoenix. If it involves heavy lift solutions or construction management or construction engineering, Brent has been there and done that!

The variety and depth of Brent's experience over the past 35 years is significant. He worked in the construction trades prior to pursuing his engineering degree. He has hands-on experience pounding nails and laying brick, as well as providing construction engineering and managing the construction of multi-million dollar projects. He has worked on Major League sports stadiums, nuclear power plants, steel mills, commercial buildings, single-family homes, roads, bridges, and other heavy civil projects.

Brent is a registered Professional Engineer in multiple states and the District of Columbia. Brent has completed training in a variety of OSHA courses. He is a member of the American Society of Civil Engineers and the Moles.

Professional Experience

Robson Forensic, Inc.


2006 to present

Provide technical investigations, analysis, reports, and testimony towards the resolution of commercial and personal injury litigation involving construction practices, safety, complex engineered systems, heavy rigging, structural design, construction management and failure analysis in the commercial, heavy, highway and residential construction industries:

Construction solutions to complex heavy lifting projects

  • Heavy rigging work, including work in power, oil refineries, and heavy construction
  • Barge roll-on and roll off operations
  • Vessel upending and erecting
  • Heavy structure, equipment, and vessel transport
  • Structure analysis and design
  • Falsework engineering
  • Crane layout
  • Critical crane lifts
  • Multiple crane lifts

Construction and construction management

  • Residential, high-rise, hotel, office, industrial, heavy, and highway/bridge construction
  • Experience as construction manager, general contractor, subcontractor, and material supplier
  • Construction claims analysis
  • CPM scheduling & analysis
  • Construction safety
  • Construction defect analysis
  • Highway/bridge construction including:
    • Earthwork (excavations, embankment, compaction)
    • Drainage
    • Concrete and asphalt pavements
    • Bridge foundation
    • Bridge substructures
    • Bridge superstructures
    • Bridge decks and deck overlays
    • Erection and falsework
  • Building construction including:
    • Sitework (earthwork, paving, landscaping)
    • Concrete (precast, cast-in-place)
    • Masonry
    • Metals (structural steel, joists, decking, ornamental metals)
    • Wood (rough carpentry, finish carpentry, framing)
    • Thermal and moisture protection (damproofing, waterproofing, insulation, shingles, roofing, siding, flashing, sealants)
    • Doors and windows (doors, windows, storefront entrances, skylights, hardware)
    • Finishes (gypsum drywall, tile, ceilings, flooring, paint, wallcovering)
    • Specialties
    • Equipment
    • Conveying systems (dumbwaiters, elevators, escalators)
    • Mechanical
    • Electricall

Complex hydraulic jacking and falsework engineering

  • Highway/bridge, heavy industrial, and commercial projects
  • Complex systems for transferring stresses in long-span roof truss systems
  • Custom designed linear winch systems to raise, position, and move heavy loads
  • Complete packages for performing pile load tests according to ASTM standards

Custom engineered and manufactured unique heavy construction equipment

  • Custom rail cars used in tunnel construction
  • Elevating platform as part of airliner mockup used for hostage rescue training
  • Variety of custom underground equipment supplied under numerous contracts for New York City Department of Environmental Protection’s Third Water Tunnel Project
  • Temporary operating system for drawbridge spans while the mechanical system was being replaced
  • Open-face, soft-ground tunnel shields for use in constructing large diameter tunnels in soil substrates
  • High-pressure hydraulic systems: tensioning pre-stressing strands for a pre-cast concrete bridge beam manufacturer; lifting bronze submarine screw castings out of the casting beds
  • Custom concrete pile cutting and disposal tool for the construction of new ship dock

Fournier Robson & Associates, LLC


2006 to present

Provide technical assistance and support to contractors and owners involving structural engineering, construction management and construction safety.

Barnhart Crane & Rigging Company, Memphis, TN / Philadelphia, PA

Senior Engineer

3/2004 to 3/2005
7/2005 to 12/2005

Provided engineered construction solutions to complex heavy rigging projects including pre-event rigging and safety design, pre-planning, safe work practices on-site execution. Projects performed in power (nuclear, fossil and wind), oil refineries, and heavy construction industries. Types of projects include:

  • Lifting, lowering, sliding and erecting heavy equipment and vessels utilizing hydraulic gantry systems, Modular Lift Towers and custom slide systems
  • Transporting heavy equipment and vessels utilizing Goldhofer hydraulic transporters and custom dolly systems.
  • Barge transport and barge roll-on/roll-off (RO-RO) work.
  • Heavy lift crane layout and implementation, including complex two-crane pick operations. Prepared Critical Lift engineering packages.

Johnson, Mirmiran & Thompson, York, PA

Director of Pennsylvania Construction Management Operations

3/2005 to 7/2005

Responsible for all construction management work in Pennsylvania. Ongoing projects included contracts with the Pennsylvania Turnpike Commission and the Pennsylvania Department of Transportation.

Elgood Mayo Co., Lancaster, PA

1994 to 2005

Supplier of engineered complex heavy lifting/rigging rental systems, and a manufacturer of customized heavy construction equipment. Elgood Mayo was a subsidiary of Gannett Fleming, Inc. from 1993 through 2001. Purchased and operated the company as a soleproprietor from 2002-2004. Subsequently sold the company to, and worked for, Barnhart Crane and Rigging Company beginning in 2004.

President 1999-2005
Responsible for all management, engineering and safety.

Project Engineer 1994-1999
Engineering, technical support and field supervision for major heavy rigging and lifts performed around the country including numerous bridge roll-in/roll-out projects, the jacking and cable tensioning for the Gregorian upgrade for the Arecibo Radio Observatory in Arecibo, Puerto Rico, the jacking of major sports stadium roofs including the twin 1,200 ton trusses on the Bank One Ballpark stadium roof in Phoenix, Arizona, the 500 ton roof lift for the Apollo of Temple in Philadelphia, Pennsylvania, and the complex 15,000 ton retractable roof structure for Miller Park Baseball Stadium in Milwaukee, Wisconsin

Design, manufacture, field start-up and testing of specialized, heavy construction equipment for large national contractors on major projects throughout the country, such as the Metro Subway in Washington, D.C., the multi-billion dollar Third Water Tunnel Project in New York City, and the nuclear waste repository project in Yucca

Mountain, NV. Designed and supplied heavy lift systems for large national contractors on major projects such as the FBI in Quantico, Virginia, U.S. Navy at the Philadelphia Ship Yards in Philadelphia, Pennsylvania, and Brookhaven National Laboratory in Upton, New York.

Gannett Fleming, Inc., Harrisburg, PA

Project Manager on Construction Management Oversight Contracts

1988 to 1994

Supervised the work of the Resident Engineer and inspectors. Served as liaison between owners, contractors, inspectors, and designers on bid phase services, project scheduling, technical support, contract document interpretation, change order negotiation and preparation, shop drawing reviews, jobsite safety, and administration services. Involved in building and transportation projects across the northeast for a variety of clients including the Pennsylvania Turnpike Commission, the Pennsylvania Department of Transportation, the Port Authority of Allegheny County, Southeastern Pennsylvania Transportation Authority, the New Jersey Department of Transportation, and the Delaware Department of Transportation.

Donohoe Construction Co., Washington, D.C.

Project Engineer

1986 to 1988

Construction of a variety of commercial building projects in the Washington D.C. metropolitan region including the National Research Council/National Academy of Sciences Research Headquarters, the American Healthcare Association headquarters, and the new Embassy of Japan.

D.P. Raffensperger, Assoc., Harrisburg, PA

Engineering Assistant

1984 to 1985

Assisted engineering staff in site development and plans, and erosion & sedimentation control plans for residential and light commercial projects. Also performed field surveying duties.

Leisenring Associates, Harrisburg, PA

Mason Tender
Brick Mason

1973 to 1983

Construction experience in the building trades. Experienced in all aspects of Residential and Light Commercial construction. Nine summers plus three years full time working “with the tools” in all phases of construction, including: site work, concrete work, rough & finish carpentry, insulation & drywall, painting, roofing, siding, and masonry

Professional Credentials

Registered Professional Engineer: NCEES, Alabama, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Kentucky, Maryland, Minnesota, Mississippi, New Jersey, New York, North Carolina, North Dakota, Oklahoma, Pennsylvania, South Dakota, Tennessee, Texas, Virginia, West Virginia, Wisconsin, and Wyoming


B.S., Civil Engineering (concentration in Construction Management and Structural Engineering), Pennsylvania State University, 1985

A.A., Engineering, Harrisburg Area Community College, 1983

Continuing Education

  • ASTM Workshop on Conducting Periodic Facade Inspections, 2011
  • Commercial Roof Inspection and Evaluation, Haag Engineering, 2011
  • Residential Roof Inspection and Evaluation, Haag Engineering, 2011
  • OSHA #500 Course – Trainer course for the Construction Industry, 2007
  • OSHA #510 Course – 30-hour OSHA construction safety, 2006 (latest)
  • OSHA 10-hour construction safety course, 2006 (latest)
  • Goldhofer training, 2005
  • Colorado School of Mines – Soft Ground Tunneling course, 1996
  • Colorado School of Mines – Microtunneling course, 1994
  • Value Engineering Techniques training, 1992
  • PennDOT Bridge Inspector Training Course, 1990
  • Lehigh University – Fracture Critical Bridge Design, 1989

Professional Affiliations

  • American Society of Civil Engineers
  • Chi Epsilon Civil Engineering Honor Fraternity
  • The Moles (an association of individuals engaged in Heavy Construction in the New York metropolitan area)


  • Update on Residential Building Codes in Pennsylvania, Lorman Education Services: Teleconference (2010)
  • Building Codes in Delaware, Lorman Education Services: Wilmington, DE (2009)
  • Building Codes in Pennsylvania, Lorman Education Services: Lancaster, PA (2007, 2008), Scranton, PA (2008), Harrisburg (2008, 2009)
  • OSHA 10-hour Construction Safety Training: Lancaster, PA (2007)


  • Brennan, D. D., and B. R. Leisenring, Guide Rail Climbing Lifting Platform and Method. D. H. Blattner and Elgood Mayo, assignees. U.S. Patent 6,357,549. 19 Mar. 2002. U.S. Application 20020084142.
  • Brennan, D. D., and B. R. Leisenring, Guide Rail Climbing Lifting Platform and Method. D. H. Blattner and Elgood Mayo, assignees. EP 1,057,770. European Patent Office, 5 Oct. 2005.

v. 02/16/21

Related Resources

See All of Brent's Published Content

Deck Collapse - Expert Introduction to Residential Deck Failures

By Brent R. Leisenring
Expert Article

The collapse of a deck is a significant structural failure that can result in serious injury and/or substantial monetary damages. This article provides an overview of a typical deck anatomy and…

Heavy Rigging Operations

By Brent R. Leisenring
Expert Article

In this short article, Civil Engineer, Brent Leisenring, P.E., retells the details of a heavy rigging project that he was responsible for managing prior to joining Robson Forensic. Brent now applies…

Damage to Adjacent Building During Construction - Expert Investigation

By Brent R. Leisenring
Expert Article

In this article we revisit a case in which a building owner claimed that damage to his building was caused by vibrations associated with a construction project on an adjacent property. Damage to…

Trench & Excavation Investigations

Thursday, July 23, 2020
2:00 - 3:00 pm
Featuring C. William Brewer, Jason Randle, Brent R. Leisenring
Video Webinar

Trench and excavation mishaps comprise a significant portion of the construction injury and property damage cases investigated by the Civil Engineers at Robson Forensic. This webinar examines three…