A two-story motel was damaged by fire. Hollow-core panels on the second floor have exhibited color change and map cracking. Where can we find out what kind of tests are needed to determine structural soundness?
We recommend hiring a consulting engineer with experience in evaluating fire-damaged structures. A listing of firms offering this specialized service starts on page 278 of the March 1991 issue of Concrete Construction magazine. The following three publications will increase your knowledge of the investigative methods used: "Assessment of Fire-damaged Concrete Structures and Repair by Gunite," Concrete Society Technical Report No. 15, 1978, The Concrete Society, Framewood Rd., Wexham Slough, Berks SL3 6PJ, England. "Evaluation and Repair of Fire Damage to Concrete," SP-92, 1986, American Concrete Institute, P.O. Box 19150, Detroit, MI 48219. "Fire Safety of Concrete Structures," SP-80, 1983, American Concrete Institute, P.O. Box 19150, Detroit, MI 48219. A paper by Armand Gustaferro in the last reference given discusses fire effects on precast, prestressed concrete construction as well as cast-in-place and post-tensioned concrete.