North Carolina Building Contractor License Practice Exam

What is the minimum thickness of steel plate or wire mesh required for roll-over canopy structures on site clearing equipment?

1. 1/8 inch

2. 1/4 inch

3. 1/2 inch

4. 3/8 inch

The correct answer is: 1/4 inch

In the context of roll-over protective structures (ROPS) for site clearing equipment, the minimum thickness of steel plate or wire mesh is crucial for ensuring safety and integrity. A thickness of 1/4 inch provides adequate strength and durability necessary to withstand the forces that might occur during a rollover situation. This thickness strikes a balance between being sturdy enough to protect operators and not being overly heavy, which could impact the equipment's performance and maneuverability. Regulations and industry standards often dictate specific requirements for safety features in construction and machinery. The specified thickness is designed to provide structural support in the event of an accident, preventing collapse and protecting the operator's safety. Thus, the choice of 1/4 inch aligns with these guidelines, ensuring that the equipment is compliant with safety standards while maintaining functionality on the job. In this case, the other options may either represent insufficient thickness that does not provide adequate protection or excessive thickness that could be impractical for the equipment's design and operational purposes.