What is the standard proof test load for a personnel platform?

• A. 100%
• B. 150%
• C. 110%
• D. 125%

Answer: (D)

When validating a personnel platform, you test it with a load that pushes beyond the normal working capacity to reveal any hidden weaknesses in the structure, hydraulics, pins, and base. The standard proof test load is 1.25 times the rated capacity, applied and held for a specified period to check for any deflection, leaks, or signs of distress. This 25% margin accounts for dynamic effects, misloads, and real-world conditions where occasional overloads can occur, ensuring the equipment can safely handle its rated load with a safety buffer. Using only the rated load wouldn’t expose latent defects, while a much higher figure could risk damage or unsafe conditions during testing. Therefore, 125% is the commonly accepted standard.