Struck-By Hazards

What is a struck-by hazard?

  • According to OSHA, the term “struck” is defined as injuries produced by forcible contact or impact between the injured person and an object or piece of equipment. The impact of object is the cause of the injury.
  • In construction work struck-by hazards can often appear to be caught-in or -between hazards. However, caught-in or -between hazards result in crushing injuries between two or more objects. Examples of struck-by hazards include:

Struck-by a flying object:

  • Examples of this hazard would be struck-by a nail from a pneumatic nailer, struck-by part of a shattered grinding wheel, struck-by a broken drill bit, and struck-by a piece of chipped concrete. These objects would be propelled with considerable force at the employee. Puncture or cutting wounds can result.
  • Protect yourself by using power tools as the manufacturer intended and do not remove guards. Inspect and ring-test grinding wheels before using them. Use appropriate personal protective equipment (PPE) like eye and face protection.

Struck-by a falling object:

  • Objects falling off building roofs, scaffolding, aerial lifts, scissors lifts, cranes, and forklifts can strike employees working nearby. The objects could be tools, brick, pipe, lumber, and other items. Gravity will cause the object to travel with speed and force. Broken bones and puncture injuries can occur.
  • Protect employees from being injured by falling objects by using appropriate toe boards, identifying and barricading the areas below work zones, and requiring PPE such as hard hats to be used.

Struck-by a swinging object:

  • Crushing injuries are often the result of being struck-by the revolving superstructure of a crane or an excavator.
  • Protect the crew by barricading the swing radius of crane and excavators. Display signage on cranes that identifies the swing hazard areas.

Struck-by a rolling object:

  • Dump trucks, end loaders, excavators, and forklifts can pose struck-by hazards. Severe crushing injures can occur due to the weight and force of being hit by these types of equipment.
  • Protect crew members on the ground by instructing equipment opera- tors to be aware of employees working around the equipment. Workers on the ground should stay alert and be aware of equipment moving nearby.