Answer to Question 1
PtD causes designers to think through what workers will actually have to do in constructing the permanent features of a structure. If any aspect of the design creates a hazardous condition the design is altered to eliminate or mitigate the condition.
Answer to Question 2
Heinrich's theory has two central points: 1) Injuries are caused by the action of preceding factors; and 2) removal of the central factor (unsafe act/hazardous condition) negates the action of the preceding factors and, in so doing, prevents accidents and injuries.
The double-stranded structure of DNA
Fluid-mosaic model of membrane structure
Diversity within the family structure.
Nose, nasal cavity, and pharynx: (A) nasal cartilages and external structure; (B) meatus and positio
Freud’s Conception on the Structure of the Mind
Age structure for three countries