Engineers' Society of Western Pennsylvania


337 Fourth Avenue
Pittsburgh, PA 15222

Phone: (412) 261-0710 Email: Get Directions

Monday, June 11, 2018

Technical Sessions

Featured Country session

Time: 2:00-5:00 p.m.


Proprietary Session

Time: 2:00-5:00 p.m.
Session Chair: Jay Rohleder Jr., P.E ., S.E., FIGG, West Chester, PA

Listen to innovative strategies owners are using to stretch limited infrastructure funding that generates longer life for existing and new bridge assets.  These presentations include accelerated installation of precast arch bridges in New York for the Long Island Railroad, FRP retrofit for Interstate bridges in Arizona, Suspension bridge de-humidification and cable protective wraps in China and a creative method for installing press-in foundation piles at sites in Ohio and Japan with low overhead construction clearances.

IBC 18-9: Replacement of Colonial Road Bridge with a Precast Concrete Arch
Philip Creamer, P.E. and Jim Riseborough, Contech Engineered Solutions, West Chester, OH; Adam Schmit, Railroad Construction Company, Paterson, NJ

This complex Design/Build project incorporated innovative engineering, advanced precast concrete fabrication methods, and Accelerated Bridge Construction to successfully deliver an on-time and on-budget project to Long Island Railroad. The chosen design and construction methods allowed for fewer than allotted weekend shutdowns minimizing disruption to the public. The $25M Colonial Road Improvement Project included the replacement of a 115 year-old structurally deficient bridge, improved drainage at the track level and the extension of the existing pocket track.

IBC 18-10: Arizona DOT Uses CFRP for Bridge Repair, Restoration to Capacity
Mo Ehsani and Tadd Johnson, QuakeWrap, Inc., Tucson, AZ; William Downes, Arizona DOT, Phoenix, AZ

Learn how Carbon Fiber Reinforced Polymer is used to reduce costs and lessen repair times with minimal service interruption for high profile bridge retrofit projects. Recently, the Arizona Department of Transportation (ADOT) used an engineered CFRP design and materials to retrofit the 19th St. and Jefferson St. bridges at Interstate 17. The girders are now strengthened to their original capacity for a small fraction of the cost of replacement, saving ADOT critical resources for other projects.

IBC 18-11: Study on the Corrosion Protection System of Cable in Suspension Bridge
Qinglian Guo, Li Zhentao, and Wang Jing, Zhenjiang Lanbo Technology Inc., Zhenjiang, Jiangsu Province China

The protection of cable has a great influence on the life of bridge. In this paper, to improve the service life of cable and reduce the rate of corrosion, the main materials of cable, the corrosion factors and the main protection system in the service process are discussed and addressed.

IBC 18-12: Case Studies on Emergency Bridge Foundation Repair with Pressed-in Piles
Takefumi Takuma, Giken America Corp., Orlando, FL

This paper will highlight two case studies on emergency bridge pier foundation repair which utilized the Press-in piling method. The projects built sheet pile cofferdams surrounding the damaged bridge pier foundations in hard gravel-and boulder-mixed soil with low headroom clearance. Conventional pile driving such as diesel or vibratory hammer methods would not have been easily applicable without additional time-consuming and costly auxiliary methods to mitigate the difficult site conditions.

IBC 18-13: Automated & Semi-Automated Drone Inspection of the Delaware Memorial Bridge
David Day, Keystone Aerial Surveys, Philadelphia, PA; Shekhar Scindia, Delaware River & Bay Authority, New Castle, DE

Interested in the possibilities of automation, the Delaware River and Bay Authority (DRBA) contracted WSP and KAS to perform testing on the South Span of the Delaware Memorial Bridge. The work revealed that automation with existing drone technologies is possible and is especially applicable for large structures. This presentation details the tools, methodologies, time spent, results, repeatability of measurements, GIS potential and lessons learned in the course of cable attachment and bearing inspection.



W-1: Specialized Bridge Construction Techniques: Erection, Interim Crossings, Performance

Time: 1:00 – 5:00 p.m.

Non-Standard Temporary Bridge Design
Presented by: Mabey Inc.

The objective of the workshop is to share project examples and techniques for developing custom temporary bridges with the incorporation of modular elements. The workshop will demonstrate the versatility of the Mabey Universal bridge system for complex geometry and roadway alignments. The workshop will focus on representative projects that highlight these techniques. The workshop will also address innovative ways to launch and erect these non-standard bridges.

Special Lifting Equipment – Full Span Construction and Deconstruction
Presented by: Burkhalter Heavy Lift and Transport – Enerpac

Our objective is to educate Contractors, Designers, and Owners on the innovative new means and methods of handling full spans available today because of advances in equipment and engineering analysis.

Performance and Design of Pretensioned Bent Caps
Presented by: Texas A&M University

This workshop will focus on the use of pretensioned bent caps that can be used in accelerated construction of bridge substructures and that provide enhanced performance over reinforced concrete bent caps by eliminating cracking. The workshop will highlight Texas DOT practice that has led to the use of pretensioned bent caps and a recently completed experimental research project. Experimental tests incorporated a modified connection designed for pretensioned bent caps. The results of the full-scale tests, including the use of interior voids for weight reduction, will be shared. Implications of the project findings on design of pretensioned bent caps will be highlighted, along with recommended design procedures. Design examples will highlight how pretensioned bent caps can be used to improve performance and economize substructure design and construction.


W-2: Introduction to Strut-and-Tie Modeling (STM) for Concrete Structures

Time: 1:00 – 5:00 p.m.
Presented by: Michael Baker International

This will be a abbreviated version of the FHWA/NHI Course No. 130126, Strut-and-Tie Modeling (STM) for Concrete Structures. It covers the relevant issues related to strut-and-tie modeling in concrete bridge structures, including fundamentals, application in bridge design, design procedures, element-level considerations, and serviceability considerations. The course includes nine lessons based on Instructor Led Training (ILT). Information in this course about strut-and-tie modeling for concrete structures is based on the AASHTO LRFD Bridge Design Specifications, 8th Edition (referred to in this course as AASHTO LRFD). The normal course is one and one-half (1½) days in duration.