FALL 2013

ASPIRE is a quarterly magazine published by PCI in cooperation with the associations of the National Concrete Bridge Council. The editorial content focuses on the latest technology and key issues in the Concrete Bridge Industry.

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F O C U S 8 | ASPIRE , Fall 2013 As budgets shrink and needs increase, bridge engineers are expanding their expertise to meet a growing array of bridge rehabilitation and construction challenges. At Structure Design & R e h a b i l i t a t i o n ( S D R ) E n g i n e e r i n g C o n s u l t a n t s I n c . i n Ta l l a h a s s e e , Fla., bridge rehabilitation has been a major focus of the firm since its 1992 inception. This has required strong emphasis on having vast knowledge of nondestructive testing (NDT), new repair materials and methods, accelerated methods of bridge construction, and development of custom software programs to address special details and damage assessment that are not available through the use of traditional design software. ÒSoftware integration and creating custom designs using new materials and techniques have become vital to resolving bridge issues,Ó says Dr. M o h s e n S h a h a w y, p r i n c i p a l a n d founder. ÒThe ability to diagnose existing conditions within a bridge has become paramount to achieving success in the bridge industry. With so many considerations about rehabilitating or replacing a bridge quickly and economically, more than engineering skill is required to complete these projects efficiently.Ó Diverse Expertise SDRÕs diversity in experience is reflected in ShahawyÕs professional history and vision for the future of bridge engineering. He began his career in Switzerland in the 1970s, working as a design and construction engineer on communication towers and a tunnel connecting Italy to Switzerland. He then moved to Amoco Petroleum in Egypt, where he designed offshore structures. Later, in Canada, he studied at QueenÕs University and The University of Manitoba and worked as a forensic engineer. More Than Engineering by Craig A. Shutt Evolution of owner concerns, new materials, and changing needs have expanded the analysis and techniques used by SDR to replace or rehabilitate bridges The completed full-depth deck replacement for the Highway I-75 project near Tampa utilizing sawed in carbon reinforcement connections. All photos: SDR Engineering Consultants Inc. This photo shows sawing of the deck panel and attaching the lifting frame to the section for removal of existing deck during a nighttime replacement operation. The existing I-75 deck was removed during a nighttime replacement operation. The new full-depth deck panel is ready for installation for the Highway I-75 project near Tampa. The panel is aligned in place and shimmed 1.4 in. higher than the existing deck to allow for future grinding, ensuring a smooth travelling surface. Book_Fall13ASPIRE.indb 8 9/6/13 12:05 PM

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