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Shotcrete Corner Fig. 5: Finishing the beams Fig. 4: Close-up of shotcrete placement the structural beams consisted of full- and partial- depth concrete removal and replacement (refer to Fig. 2). The use of shotcrete was an integral part of this repair. With the difficulty of access to the underside of the bridge, logistics, and the confined working space, dry-mix shotcrete was the smart choice (refer to Fig. 3 and 4). All materials and equipment were at the top of the bridge and just the hoses were mobilized to the work area. The ACI certified nozzlemen at RAM Construction repaired a total of 1200 ft2 (110 m2) of concrete on the structural beams. All of the exposed reinforcing steel was cleaned and coated or replaced if deterioration was signifi- cant. All seven support beams were finished to Fig. 6: Oakland University’s Meadow Brook Hall Bridge the original historic “chamfered” profile (refer to Fig. 5). reference One of the main concerns of the owner’s rep- Upward, G., “A Landmark Achievement,” Meadow Brook resentatives at Meadow Brook Hall and Oakland Magazine, Spring 2012, pp. 2-3. University was to not impede the schedule of main events, including weddings that took place during the week and on weekends. According to Jessica S. Farley is a Project Damian Farmer, Project Foreman for RAM Con- Manager at RAM Construction struction, planning the work around the schedule Services and has over 12 years of events at Meadow Brook Hall was the most of experience in the Masonry challenging part of this project. With the multiple Restoration industry as a mobilizations, using the dry-mix shotcrete Project Manager/Estimator. method was an advantage to decrease the duration She specializes in historic of the project while offering a cost saving to both preservation of masonry buildings the owner and contractor. and structures, including replacing; repointing; This project is reminiscent of the “glory days” and patching of brick, stone, terra cotta, and of the automobile industry in Metropolitan concrete. Farley is the Developer and Co-Chair Detroit. The triumph of the Meadow Brook Hall of the Masonry Restoration Technical Committee, bridge renovation and revitalization symbolizes an in-house committee that focuses on standardizing the historic turnaround of the auto industry and work procedures in the field and educating on Detroit (refer to Fig. 6). historic practices and techniques. Shotcrete • Spring 2013 27


2013SprShotcreteEMag
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