ODRC Marion Concrete Floor Repair

Forensic investigation of six dorms second floor cracks, disintegrating, vibration, & Repair/Replacement of the flooring to maintain the structural integrity of these structure. Star Consultants, Inc. performed a forensic inspection of the wind loss and a study of the structural integrity of the flooring system of the above referenced group of dorms located in Marion, Ohio. The Ohio Department of Rehabilitation and Correction identified the cause of cracks and commissioned Star to replace Concrete Flooring in six dormitories (with a total area of about 15,360 SQ.FT) at Marion Correctional Institution.

Star investigated the existing Concrete Flooring, took core samples and bar scanning, determined source of problems, and proposed several options as to the replacement of the Concrete Flooring. Existing Concrete Flooring in these dormitories is made up of metal deck (0.6C28), 2î concrete without re-bars, and 1 Ωî finish floor. Major cracks were observed. These cracks did undermine the structural integrity of flooring. In addition, existing separation (damage) of finish floor from concrete flooring and separation between metal deck and concrete flooring produced large unacceptable deflection. Based on a visual inspection, metal deck looks sound and in acceptable condition. Our forensic inspection has indicated that existing metal deck is to remain in place and used as part of the new concrete flooring system. This will help protecting first floor from debris. This process would not require general temporary shoring. Existing finish floor and concrete flooring will be saw cut, removed, and replaced with new high strength concrete, re-bars, and finish flooring. Studs will be utilized and tack welded to make a composite section and to ensure bonding between concrete, metal deck, and joists. This mechanism will ensure controlled and acceptable deflection