Which option is a disadvantage of the K type shore?

The option indicating that the K type shore should not exceed a 90-degree angle is correct, as it emphasizes the design limitations of this specific type of shoring equipment. The K type shore is designed with its structural integrity based on certain angles and configurations. Exceeding a 90-degree angle can compromise its stability and effectiveness, which may lead to potential failure in supporting the structures it is meant to uphold.

Understanding the limitations regarding angle configuration is critical for ensuring safe and effective shoring practices. Proper installation at the recommended angles ensures that the load is distributed evenly and that the shoring can withstand external pressures without collapsing. Thus, adhering to these guidelines is essential for maintaining the safety of the shoring system in practical applications.