In load tests of hoists, winches, cranes, and crane structures, the test must be held for a minimum of how many minutes?

In load tests of hoists, winches, cranes, and crane structures, a duration of 10 minutes is specified to ensure that the equipment can sustain the imposed load adequately. This time frame allows operators to observe the performance of the machinery under stress and helps identify any potential issues such as deformations or failures in components that might not be evident during shorter tests. By maintaining the load for this minimum period, it is possible to gather enough data to assess the safety and reliability of the equipment in real operational scenarios, which is critical for ensuring safe usage in the future.