Which of the following is an example of a physical hazard in construction?

Fire and explosion is categorized as a physical hazard in construction due to the tangible dangers it presents to workers and the work environment. Physical hazards are typically characterized by factors that can cause injury or harm through direct physical interaction. In this context, fire can result from flammable materials, electrical malfunctions, or other unsafe practices leading to burn injuries, smoke inhalation, and structural damage. Similarly, explosions may arise from mishandling of explosives or volatile substances, posing immediate physical threats.

The other options, while significant in their impacts on workplace safety, represent different types of hazards. Inadequate training refers to a lack of knowledge or skills that can lead to unsafe practices, which is more of an organizational or human factor concern. Poor communication falls under procedural or psychosocial hazards, impacting teamwork and safety awareness without directly causing physical harm. Lastly, fatigue and stress highlight mental and physiological conditions that can impair workers’ performance and increase the risk of accidents but do not directly associate with physical dangers in the same tangible way that fire and explosions do.