International Existing Building Code Implementation and Associated Challenges: Case Studies Related to the Repair of Damaged Structures

Proper implementation of the International Existing Building Code (IEBC) is challenging for both traditional design professionals implementing rehabilitation or renovation projects, as well as engineers dealing with the repair and restoration of structures damaged to varying degrees by natural hazards, fire or other severe loading events. When buildings suffer damage, sometimes incongruent perspectives of owners, insurance representatives, design professionals, contractors and authorities having jurisdiction can further complicate already challenging conditions. In order to effectively achieve a fair and reasonable resolution based on sound technical and economic considerations, applicable building code provisions and related ordinances must be properly interpreted and applied. This paper, written from the structural engineer’s perspective provides insights - primarily via case studies - regarding the application of the IEBC provisions related to the repair of buildings that were damaged by a natural hazard, fire or other severe loading event. The case studies are preceded by a brief background of the development of the IEBC and a summary of general practices appropriate to the repairs of damaged structures. This general material is supplemented with three examples of damaged building investigations, each of which was selected to illustrate particular challenges. Specific provisions in the IEBC are discussed, coupled with the engineering and economic principles that must be considered in order to provide logical, code-compliant solutions that best serve all affected parties.