1.1 This Standard specifies requirements for the design, performance, testing, marking, and instructions of manufactured free-standing guardrails that rely on mass and friction and that are intended to protect workers from a fall hazard. These guardrails are not fixed to a structure.
1.2 This Standard does not apply to a) warning lines used for control zones; b) netting or infill panels used as barriers; c) guardrails that penetrate the structure and secure to the substrate; d) guardrails designed to support material-handling equipment; and e) guardrails intended for use on surfaces with a slope of more than 5 (1:12).
1.3 Tolerances Unless otherwise stated in this Standard, all units have an acceptable tolerance range of 2%.