For Vehicular Vertical Pivot Gates, what sphere size must be prevented through all moving gate areas?

For Vehicular Vertical Pivot Gates, what sphere size must be prevented through all moving gate areas?

• A. 2 1/4 inches
• B. 4 inches
• C. 2 inches
• D. 3 inches

Answer: (A)

Safety clearance in moving gate areas must block a sphere of a specified size from passing. For Vehicular Vertical Pivot Gates, that sphere is 2 1/4 inches in diameter. The design must ensure no gap along the gate’s travel allows a 2 1/4-inch sphere to pass, preventing entrapment of fingers or other body parts as the gate moves. This threshold is used to balance safety with functional clearance, so the system is built to block that size while still permitting normal operation. The larger diameters would risk allowing passage of a bigger sphere, and the smaller diameter isn’t the standard tested in this context, so 2 1/4 inches is the correct specification.

Safety clearance in moving gate areas must block a sphere of a specified size from passing. For Vehicular Vertical Pivot Gates, that sphere is 2 1/4 inches in diameter. The design must ensure no gap along the gate’s travel allows a 2 1/4-inch sphere to pass, preventing entrapment of fingers or other body parts as the gate moves. This threshold is used to balance safety with functional clearance, so the system is built to block that size while still permitting normal operation. The larger diameters would risk allowing passage of a bigger sphere, and the smaller diameter isn’t the standard tested in this context, so 2 1/4 inches is the correct specification.