When blocking off an area for a rig job, what is this known as?

The term "rigging envelope" refers to the designated space around a rigging operation where the movement and operation of equipment must be carefully monitored to ensure safety. It encompasses the area where the points of lift occur and identifies the height and radius needed for the equipment to operate without interfering with people, property, or other equipment. By establishing a rigging envelope, safety protocols can be adhered to, preventing accidents and ensuring that all personnel are kept at a safe distance from potential hazards during the lifting process.

In a rigging context, the other options do not specifically denote the area that is defined for rigging operations. A safety zone may refer more broadly to an area designated for safety, but it doesn't specifically capture the operational parameters of rigging. An isolation area might imply a space kept clear for safety reasons but doesn't encapsulate the operational dimensions and considerations inherent to rigging activities. Similarly, a work area is a more general term that may apply to various tasks and does not specifically pertain to the unique requirements and protocols of rigging operations.