Assertion: scaffold's platform | /r/AtLocation | structure
Facets:
Source sentences:
text: "boom-supported" means supported by an elevating device that telescopes, articulates, rotates or extends relative to the machine base or vehicle, so that the platform can be positioned completely beyond the base; "boatswain's chair", also known as a bosun's chair, means a seat attached to a suspended rope designed to accommodate one person in a sitting position; "elevating work platform" means a movable work platform that self-elevates to overhead work locations; "movable work platform" means a work platform that can be re-positioned during the course of the work; "permanent powered platform" means a movable work platform that (a) is raised or lowered by other than manual means, and (b) is permanently installed on or attached to a building or structure; "portable powered platform" means a movable work platform that (a) is raised or lowered by other than manual means, and (b) is not permanently installed on or attached to a building or structure; "scaffold" means any temporary elevated work platform and its supporting structure used for supporting workers, materials or equipment; "self-propelled" means the capability of an elevating work platform to travel under power with the primary controls on the work platform; "swing stage" means a work platform that is raised and lowered by manual or powered hoisting equipment, supported by 2 or more suspension lines; "work platform" means an elevated or suspended temporary work surface used for supporting workers and includes a scaffold and boatswain's chair.