Guardrail system means a vertical barrier, consisting of, but not limited to, toprails, midrails, and posts, erected to prevent employees from falling off a scaffold platform or walkway to lower levels. Hoist means a manual or power-operated mechanical device to raise or lower a suspended scaffold. Horse scaffolds constructed of metal are sometimes known as trestle scaffolds. Interior hung scaffold means a suspension scaffold consisting of a platform suspended from the ceiling or roof structure by fixed length supports. Ladder jack scaffold means a supported scaffold consisting of a platform resting on brackets attached to ladders.
Landing means a platform at the end of a flight of stairs.
Large area scaffold means a pole scaffold, tube and coupler scaffold, systems scaffold, or fabricated frame scaffold erected over substantially the entire work area. Lean-to scaffold means a supported scaffold which is kept erect by tilting it toward and resting it against a building or structure. Lower levels means areas below the level where the employee is located and to which an employee can fall. Such areas include, but are not limited to, ground levels, floors, roofs, ramps, runways, excavations, pits, tanks, materials, water, and equipment. Masons' multi-point adjustable suspension scaffold means a continuous run suspension scaffold designed and used for masonry operations.