Aguardrail's top rail must be able to withstand at least?

A guardrail's top rail must be able to withstand at least 200 LBS of force. 

"Guardrail systems are capable of withstanding, without failure, a force of at least 200 pounds (890 N) applied in a downward or outward direction within 2 inches (5 cm) of the top edge, at any point along the top rail." - OSHA Requirements for Guardrail and Safety Railing Compliance

The above statement is where I based my answer of minimum force of 200 pounds. 

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