How far must the work space extend from the grade, floor, or platform for equipment that is 60 inches in height?

For equipment that is 60 inches in height, the work space must extend a minimum of 78 inches from the grade, floor, or platform. This is based on safety codes and regulations that ensure adequate room for operation and maintenance of the equipment. The extension of the work space beyond the height of the equipment is crucial for safe access and operation, allowing personnel to perform their tasks without obstruction or risk.

In this scenario, the 78-inch requirement provides a margin of safety, where personnel can work comfortably without the risk of hitting their heads or encountering other hazards. This standard is typically established by various safety organizations and regulations that focus on maintaining a safe working environment, especially in industrial settings. It's important to always reference the specific standards applicable to your jurisdiction or industry to ensure compliance.