What is the minimum strength required for the top rail of a guardrail system for a suspended platform?

The correct choice reflects the requirement that the top rail of a guardrail system for a suspended platform must be able to withstand a minimum strength of 100 lbs. This specification is in place to ensure safety and stability for individuals working on or near suspended platforms. The strength of 100 lbs ensures that the guardrails can adequately support the force exerted by a person leaning or falling against them, thus helping to prevent accidents and injuries.

This requirement is typically set forth in safety regulations, which mandate that guardrails must be designed to effectively safeguard workers from falls, particularly in elevated work environments. By establishing a benchmark of 100 lbs, the regulation ensures that guardrails are sufficiently robust to provide reliable support and prevent potential hazards associated with working on suspended platforms.