#Scaffold ladder series

Load refusal is the point where the ultimate strength is exceeded. Failure: Load refusal, breakage, or separation of component parts. Fabricated frame scaffold (tubular welded frame scaffold): A scaffold consisting of a platform(s) supported on fabricated end frames with integral posts, horizontal bearers, and intermediate members. Fabricated decking and planking: Manufactured platforms made of wood (including laminated wood and solid sawn wood planks), metal, or other materials.

Eye or Eye splice: A loop with or without a thimble at the end of a wire rope. Such lines do not include extension cords or power tool cords. Exposed power lines: Electrical power lines which are accessible to employees and which are not shielded from contact. Equivalent: Alternative designs, materials, or methods to protect against a hazard which the employer can demonstrate will provide an equal or greater degree of safety for employees than the methods, materials, or designs specified in the standard. Double pole (independent pole) scaffold: A supported scaffold consisting of a platform(s) resting on cross beams (bearers) supported by ledgers and a double row of uprights independent of support (except ties, guys, braces) from any structure. Deceleration device: Any mechanism, such as a rope grab, rip-stitch lanyard, specially woven lanyard, tearing or deforming lanyard, or automatic self-retracting lifeline lanyard, which dissipates a substantial amount of energy during a fall arrest or limits the energy imposed on an employee during fall arrest. Crawling board (chicken ladder): A supported scaffold consisting of a plank with cleats spaced and secured to provide footing, for use on sloped surfaces such as roofs. Coupler: A device for locking together the tubes of a tube and coupler scaffold.

#Scaffold ladder series

Continuous run scaffold (Run scaffold): A two-point or multi-point adjustable suspension scaffold constructed using a series of interconnected braced scaffold members or supporting structures erected to form a continuous scaffold. Competent person: One who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them. Cleats are also used to provide footing on sloped surfaces such as crawling boards. (See ' Multi-point adjustable suspension scaffold'.) Cleat: A structural block used at the end of a platform to prevent the platform from slipping off its supports. Chimney hoist: A multi-point adjustable suspension scaffold used to provide access to work inside chimneys. Additional support may be provided by vertical pickups. Catenary scaffold: A suspension scaffold consisting of a platform supported by two essentially horizontal and parallel ropes attached to structural members of a building or other structure. Carpents' bracket scaffold: A supported scaffold consisting of a platform supported by brackets attached to building or structural walls. Bricklayers' square scaffold: A supported scaffold composed of framed squares which support a platform.

Brace: A rigid connection that holds one scaffold member in a fixed position with respect to another member, or to a building or structure. Body harness: A design of straps which may be secured about the employee in a manner to distribute the fall-arrest forces over at least the thighs, pelvis, waist, chest, and shoulders, with means for attaching it to other components of a personal fall arrest system. Body belt (safety belt): A strap with means both for securing it about the waist and for attaching it to a lanyard, lifeline, or deceleration device. Boatswain's chair: A single-point adjustable suspension scaffold consisting of a seat or sling designed to support one employee in a sitting position. Bearer (putlog): A horizontal transverse scaffold member (which may be supported by ledgers or runners) upon which the scaffold platform rests and which joins scaffold uprights, posts, poles, and similar members. Angulated roping: A system of platform suspension in which the upper wire rope sheaves or suspension points are closer to the plane of the building face than the corresponding attachment points on the platform, thus causing the platform to press against the face of the building. Adjustable suspension scaffold: A suspension scaffold equipped with a hoist(s) that can be operated by an employee(s) on the scaffold.