What force must rails be able to withstand?

The correct answer is based on the standards set by the Occupational Safety and Health Administration (OSHA) regarding the strength requirements for guardrails and similar structures. According to OSHA regulations, guardrails are required to withstand a force of at least 200 pounds applied downward and outward from the top rail. This specification ensures that the guardrails are strong enough to effectively provide the necessary fall protection in construction environments, where the risk of falls is significant.

Understanding the force requirement is crucial in preventing injuries on construction sites. Guardrails must not only be structurally sound but also able to resist forces that may occur due to individuals leaning or falling against them. This safety standard reflects the importance of maintaining a safe working environment and is a critical element in fall protection strategies.