Basic Structure System Rating of Post–Super Typhoon Haiyan Structures in Tacloban and East Guiuan, Philippines

This paper reports the investigation outcomes of the recent Super Typhoon Haiyan (also known as Hurricane Yolanda) in the Philippines using a basic structure damage rating technique. The rating technique ranked damaged conditions based on a 0 to 3 rating. A total of 156 structures were analyzed using the rating technique. Unlike previously published condition ratings, the technique does not include functional assessments such as mechanical and electrical systems and does not directly consider habitant safety nor costs to structure. The intent of the rating is to provide a quantitative measure of the effects of Haiyan. The outcomes indicate that wind damage dominated as the major cause of failures (53%) and that roof damage is the most significant of the damage modes (21%). The rating gives a first-order assessment of the damaged conditions of the structures pertaining to the loading effects (wind, water or storm surge, or combined) from Super Typhoon Haiyan.