Eriksson Technologies
Roy L. Eriksson, P.E.

Years of Experience: 27

· M.S., Civil Engineering (structures emphasis), University of South Florida, 1989
· B.S., Civil Engineering (structures emphasis), University of Florida, 1982
· Additional Studies: completed 24 credits towards MBA, University of South Florida, 1986

Professional Affiliations

Precast/Prestressed Concrete Institute (PCI):
- Chairman, Prestress Losses Subcommittee (2005 – present)
- Chairman, PCI Bridge Technical Committee (1999 – 2003)
- Transportation Activities Committee (TrAC) (1994 – present)
- Bridge Committee (1994 – present)
- Bridge Producers Committee (1996 – present)
- LRFD Subcommittee (1995 – present)
- Girder Stability Subcommittee (2008 – present)

Professional Registrations

NCEES Record No. 36031

Florida, No. 40107 Pennsylvania, No. 077232 Texas, No. 103987
Virginia, No. 045631 New Jersey, No. 47952 New Hampshire, No, 12927
Maryland, No. 36505 Massachusetts No. 48750 Connecticut, No. 28179
Maine, No. 12930 New York, No. 090733-1 North Carolina, No. 038156
Rhode Island, No 9833 Utah, No. 8234976-2202 Vermont, No. 0075908

Key Qualifications

Roy Eriksson is President and CEO of Eriksson Technologies, Inc., a firm that specializes in developing and supporting state-of-the art bridge and structural engineering software and the rendering of consulting structural engineering services. The firm is a noted expert in developing technology transfer tools for the bridge engineering community and applying the AASHTO LRFD and Standard Specifications to engineering practice. Eriksson offers consulting, training, and research services to departments of transportation, consulting engineering firms, precast fabricators, and industry groups throughout the United States. Their PSBeam software, for the design of prestressed concrete bridges, is used extensively throughout the United States.

Roy has a broad range of experience in structural engineering and engineering software development. He has been responsible for structural engineering for a variety of projects using precast/pretensioned and post-tensioned concrete, cast-in-place concrete, and structural steel. Project types include new construction, expansion, failure investigations, and construction engineering of bridges and commercial structures. He also has extensive personal experience with AASHTO’s load and resistance factor design (LRFD) specifications, which includes development of design software, comprehensive LRFD training courses, industry committee involvement, and project design experience. During his tenure as the Chair of PCI’s Technical Committee for Bridges, Roy interfaced directly with the T-10 (Concrete) subcommittee of the AASHTO Subcommittee on Bridges and Structures. A primary activity of this involvement is preparing proposed revisions to the AASHTO Specifications.

Employment History

· LEAP Associates International, Inc.
Project Engineer 1983-1985
Performed structural engineering on a variety of projects, including bridges and commercial structures. Structural materials included reinforced and prestressed concrete, steel, and wood.

· LEAP Software, Inc.
VP/General Manager 1985-1994
Responsible for overall management of the company. During tenure developed the company from a single employee to a full staff of programmers, engineers, and support personnel. Oversaw conception, development, and bringing to market of the Conspan, RC-Pier, Geomath, Presto, and Axsys softwares.

· Parsons Brinckerhoff Quade & Douglas, Inc.
Supervising Structural Engineer 1994-2000
Lead structural engineer and project manager for a large, complex post-tensioned box girder bridge and moveable bridge project for FDOT, leading it from conception through post-design services. Oversaw development of standardized series of bridges for the Boston Central Artery Project. Integral member of a team that assessed the feasibility of the Charles River cable-stayed bridge (renamed the Howard Zakim Bridge after final design). Developed an LRFD training program for internal and external use.

· Eriksson Technologies, Inc.
President/CEO 2000-present
Principal structural engineer in overall charge of the company. Led company from single employee to a complete staff of engineers, programmers, CAD technicians, and support personnel. Company specializes in rendering engineering services and developing engineering software tools for external licensure and use in engineering services division of the company. Areas of expertise include highway bridges, prestressed concrete, reinforced concrete and programming.

Representative Design Projects (partial listing)
Dulles Metrorail, VA: Prepared many sheets of detailed shop drawings for large precast, pretensioned and post-tensioned box and inverted tee beams. These heavily-loaded girders support the passenger platforms at three of the elevated guideway stations. Parabolic post-tensioning ducts, future PT ducts, pretensioned strands, dapped ends, and a complex reinforcing steel layout provided a high degree of technical challenge.

Intercounty Connector, Baltimore, Maryland: Prepared conceptual designs, redesign calculations, and calculations for shipping and handling of bridge girders for the six structures of Contract A. Supervvised preparation of all shop drawings. Structural member types included bulb tees and box beams. Developed a new quick connect/disconnect lifting system for very heavy girders.

Prestress Bed Retrofit, San Marcos, TX: Performed a load study and prepared design calculations and drawings to retrofit an existing bed to enable it to handle draped strand patterns with high forces. New hold-down concept utilized deep foundation 18” diameter drilled shafts and cap beam due to highly expansive clay soil. Detailed calculations were also performed to assess capacities of other existing beds.

Oak Bluffs, Martha’s Vineyard, Massachusetts: Prepared all shop drawings for a single span and a three-span composite box beam structures.

Route 896, Delaware: Performed detailing and prepared detailed shop drawings and handling calculations for precast/prestressed concrete pavement panels. These 24’ wide by 10’ long 8” thick panels were pretensioned in the direction transverse to the roadway and post-tensioned with strands and PT bars longitudinal to traffic.

Route 23 Over Peckman’s Brook, New Jersey: Served as Engineer of Record for this hybrid-composite beam bridge. The hybrid composite beam is a new-generation composite structural member that incorporates an inner concrete compression arch and tension tie to create a highly structurally efficient member.

Knickerbocker Bridge, Maine: Performed detailing and prepared complete shop drawings for this 8-span continuous hybrid-composite beam bridge.

Subsea 7 Spool Base Facility, Texas: Designed superstructure for this waterfront structure. The main structural elements were continuous precast/prestressed concrete voided slabs.

International Boulevard Viaduct, Fulton Co., Georgia: Rendered construction engineering services to the fabricator. Prepared redesign calculations and shop drawings for these twin 12-span, highly asymmetrical precast/pretensioned concrete girder structures.

SR-77 Over Talladega Creek; Talladega Co., Alabama: Prepared value engineering calculations, redesign calculations, and drawings for this bridge replacement project that incorporates both standard AASHTO girders and bulb-tee girders.

Hallandale Beach Flyover Ramp, Hallandale Beach, Florida: Served as project manager and lead structural engineer, and post-design services manager for a cast-in-place, highly-curved, post-tensioned concrete box girder flyover ramp. With span lengths ranging from 131 to 187 feet, this four-span highly-curved structure with phased construction presented numerous design challenges.

Central Artery/Tunnel Project, Boston, Massachusetts: Served as lead engineer for the development of a series of standardized bridges, both concrete and steel. Also served as an Integral member of a team that performed a special feasibility investigation of the asymmetric cable-stayed Charles River segmental concrete bridge, which consists of eight inboard and two outboard traffic lanes.

Harbour Island People Mover, Tampa, Florida: Project engineer for the superstructure of the prestressed precast spliced-girder span of this elevated people mover. [See Selected Publications below for PCI Journal article on this project.]

Software Development

Roy has extensive experience in all phases of commercial software development. Major areas of responsibility have included software design, programming, operations management, business development, contract negotiation, technical support, and design seminars. He has over ten years of hands-on experience developing Windows-based engineering applications using C++.

Selected Teaching Experience (partial listing)
“LRFD Training: Principles & Practice” – Participated in the delivery of this full-day course on concrete bridge design in accordance with the AASHTO LRFD Specifications. This course was conducted in Tampa; Atlanta; Newark, NJ; Springfield, IL; Portland, OR; Sacramento, CA; and Irvine, CA from March 2004 through April, 2005. Several hundred practicing bridge engineers in private and public practice attended it.

“AASHTO LRFD Training Seminar”, developed course material and taught Concrete Bridges I & II modules (7 hrs total) covering LRFD principles, bridge superstructure design, substructure design, strut-and-tie modeling, and integral bridge design. Part of 4-day seminar sponsored by Michael Baker Engineers for the WV DOT, FHWA, and consultants, August 1-4, 2000, Charleston, WV.

“PCI Bridge Design Manual Seminar”, taught 3 hours covering design optimization, LRFD, and superstructure design. Sponsored by Prestressed Concrete Producers of Arkansas, Little Rock, AR, August 8, 2000.

“1997 Load and Resistance Factor Design (LRFD) of Bridges,” developed presentation material for, and participated in the presentation of, a half-day concrete module for a series of 2-day, intensive seminars sponsored by the Florida DOT and Florida Institute of Consulting Engineers, August-October, 1997. The purpose of the seminars was to prepare Florida bridge engineers for statewide adoption of LRFD.

Spliced Girder Standards, PennDOT – Developed standard drawings and model calculations for Pennsylvania DOT for standardizing the use of spliced girders in the state of Pennsylvania.

NCHRP 12-69 – “Design and Construction Guidelines for Long-Span Decked Precast, Prestressed Concrete Girder (DPPCG) Bridges“. Eriksson served as Co-Principal Investigator on this project. Eriksson’s role in the project was to perform literature search related to design and analysis methods of DPPCG, refine/revise design and analysis methods with respect to research conducted, draft specifications language, and develop design examples.Total project budget was $500,000 and was completed in 2010.

NCHRP 10-71 – “Evaluation of CIP Reinforced Joints for Full-Depth Precast Concrete Bridge Decks“. Eriksson serves as a primary consultant on this $500k project. Areas of responsibility include: review of design procedures, preparation of design examples, and review of specifications language. Project is scheduled for completion in late 2010.

2002 PCI National Design Awards Judge
Elected a Professional Associate of Parsons Brinckerhoff; March, 1996
Technical Writing Awards: Merit (1993), Excellence (1991), and Merit (1991), Society for Technical Communications Technical Writing Competitions.
Selected Publications
“LRFD Bridge Design Seminar Series: Overview of the AASHTO LRFD Specifications and Concrete Bridge Design,” PB Office of Professional Practice, 1996.

Co-author, "Segmental Design of the Harbour Island People Mover," PCI Journal, Vol. 30, No. 4, July-August, 1985, pp. 38-51

Updated design examples portion of the PCI Bridge Design Manual. Since its release in 1987, the PCI BDM has become the industry's standard reference for the design and fabrication of plant-cast precast prestressed concrete transportation products.

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