Guardrails

When constructed and used properly, guardrails are a highly effective method for preventing falls. A guardrail is defined as a vertical barrier primarily intended to protect against personnel falling to lower levels. A guardrail system generally includes a top rail, a midrail, and toeboards.

The top rail of the guardrail must be between 39 and 45 inches above the working level.

The midrail must be installed halfway between the top rail and the working surface. They are required when there is no wall or surface at least 21 inches high. Screens and mesh can be used to extend from the top rail to the working surface to prevent items from falling off the guardrail. Any other structural components, such as balusters, must be no more than 19 inches apart.

The guardrail must be capable of withstanding a force of at least 200 pounds applied within two inches of the top edge. Midrails, screens, and mesh must be capable of withstanding a force of 150 pounds.

Guardrails should be used any time there is an uncovered opening in a floor or other surface, an open edge such as a roof, balcony, or other work area, or any time a person is exposed to the hazard of a fall.

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