Dr. Elgabry's 24 years of professional experience include contributions to the following Major Projects while working for Buckland & Taylor - COWI (from Jul 1995 to Apr 2014) and Monenco AGRA Inc. (from Dec 1993 to Jun 1995).
St. Croix River Crossing, Minnesota, USA - Jul 2012 to Apr 2014. The main Extradosed Bridge is 1024 m (3360 ft.) long. The extradosed superstructure combines post tensioned precast segmental concrete twin box girders 5.5 m (18 ft.) deep and relatively low angle stay cables. The deck twin box girders are integral with the bridge piers with 183 m (600 ft.) spans. Key responsibilities included Team Leader for the extradosed precast segmental deck longitudinal and transverse design. The deck longitudinal design included the completed bridge, step by step erection analysis for the construction stage and full post tensioning layout & details. The deck transverse design included a 3D Finite Element model (Sofistik) to carry on the analysis of the precast twin boxes including the transverse post tensioned strut connecting the boxes at the stay cable locations. The duties also included reviewing of the design criteria, load rating of the extradosed deck and conducting redundancy analysis.
Shaikh Zayed Bridge, Abu Dhabi, UAE – Dec 2003 to Oct 2010. The bridge is the new gateway to Abu Dhabi Island with three twin steel arches resembling the desert sand dunes. The overall length of the main bridge is 842 m (2762 ft.), divided into 11 spans ranging from 60 m (197 ft.) to 140 m (459 ft.). The bridge deck has two cast-in-situ post tensioned concrete cellular box carriageways each 24 m (78 ft.) wide with large transverse cross beams linking them. The deck is supported by post tensioned concrete piers and the three steel arches. Key responsibilities included Team Leader for the independent concrete design review for the completed bridge and during the staged construction. The duties also included providing detailed post tensioning sequence for the piers and deck box girders.
Harilaos Trikoupis (Rion-Antirion) Bridge, Greece – Jul 1999 to Aug 2004. Member of the Independent Design Review Team that checked the design for this 2,252 m (7388 ft.) long multi-span cable-stayed bridge. The Independent Review included the design criteria, the seismic loadings and the concrete design of the piers, pylons and deck precast slabs. The four reinforced concrete pier bases are 90 m (295 ft.) in diameter which were built in dry-docks and then floated into position and sunk in approximately 50 m (164 ft.) of water to support the four legged pylons. The Review also included checking the concrete design for the 985 m (3231 ft.) long seismically isolated approach viaduct consisting of two independent composite bridges with spans that vary between 30 m (98 ft.) and 62 m (203 ft.).
Confederation Bridge, Prince Edward Island, Canada – Mar 2005 to Apr 2014. Buckland & Taylor - COWI is the Independent Engineer for the 13 km (8 miles) long post tensioned precast concrete crossing linking Prince Edward Island to New Brunswick. Filled the role of the Independent Engineer’s Project Manager from Mar 2005 to Apr 2012 and Project Director from May 2012 to Apr 2014. During the operation period of the bridge, the Independent Engineer is responsible for administration of the Concession Contract, reviewing the maintenance and operation of the facility, reviewing all changes to the bridge, inspecting the bridge at least once annually and reporting on the condition of the bridge to the Developer and the Government of Canada.
Hibernia Offshore Project, St. John's, NL, Canada – Dec 1993 to Jun 1995. The massive concrete gravity base structure (GBS) of the Hibernia Offshore Oil Project is located in approximately 80 m (262 ft.) deep water; its caisson has a diameter of 106 m (348 ft.) and a height of 85 m (279 ft.). As a Member of the GBS Design Team, provided design for the post tensioned 80 m (262 ft.) high utility shaft and roof beams. The duties also included providing details to account for slip-form construction.