According to ASME B30.3, how many broken wires in six rope diameters can you have for rotation-resistant running rope to remain in service?

The standard ASME B30.3 outlines safety requirements for tower cranes, including specifications related to the condition of ropes used in crane operations. When it comes to rotation-resistant running rope, the standard specifies that a maximum of one broken wire is permissible within a length of six rope diameters. This is important for maintaining the structural integrity and safety of the rope when it is in use.

Having only one broken wire indicates that the rope is still capable of performing its function safely, as long as any further deterioration does not occur. It ensures that operators can identify ropes that need to be replaced before they become a safety hazard, thus providing guidelines for regular inspections and maintenance. The standard aims to prevent accidents related to equipment failure, ultimately contributing to safer lifting operations in the construction and other industries.

In contrast, allowing more than one broken wire would increase the risk of rope failure, as each broken wire reduces the overall strength of the rope. Therefore, adhering to this guideline of having only one broken wire within six rope diameters helps maintain operational safety and equipment longevity.