When using scaffolding, why should nails not be left protruding?

Nails should not be left protruding on scaffolding primarily because they can cause injury. Protruding nails create a hazard for workers and anyone who might come into contact with the scaffolding. Accidental contact with sharp objects can lead to cuts, punctures, or other injuries, which could result in serious accidents on the job site. Ensuring that all nails are properly driven in not only enhances safety but also promotes a safer working environment overall.

While the appearance of the scaffolding and structural integrity are also important considerations, the immediate concern for worker safety makes the prevention of injuries the top priority.