(10) Collapse: refers to an accident caused by an object under external force or gravity exceeding its own strength limit or destroying structural stability, such as earth-rock collapse during trenching, scaffolding collapse, pile-up collapse, etc., which is not applicable to the collapse caused by屋頂下墜及車輛、起重機(jī)械及爆破。
Which identification method to choose depends on the nature of the object, characteristics, life stages and the knowledge, experience and habits of the analyst.There are two commonly used methods of identification: