ASME A17.1b-2009 pdf download

ASME A17.1b-2009 pdf download.Addenda to ASME A17.1-2007/ CSA B44-07 Safety Code for Elevators and Escalators.
escalatorpanel, exterior: the panelenclosingtheexterior side of the balustrade. escalator panel, interior: the panel located between the skirt and the escalator high deck or the handrail stand. escalatorskirt: the fixed, verticalpanels locatedimmedi- ately adjacent to the steps. escalator skirt cover, dynamic: the stationary cover that protects the interface between the dynamic skirt panel and the escalator balustrade. escalator skirt, dynamic: see skirt panel, dynamic. escalator wellway: an opening in a floor provided for escalator installation between two levels of a building. escalators, tandem operation: escalators used in series with common intermediate landings. factor of safety: the ratio of the ultimate strength to the working stress of a member under maximum static loading, unless otherwise specified in a particular requirement. fail safe: a characteristic of a system or its elements whereby any failure or malfunction affecting safety will cause the system to revert to a state that is known to be safe. fire barrier: a fire-resistance-rated vertical or horizontal assembly of material designed to restrict the spread of fire in which the openings are protected. fire-protection rating: a designationindicatingthedura- tion of the fire test exposure to which a fire door assem- bly (entrance) was exposed and for which it met all the acceptance criteria as determined in accordance with a recognized fire test standard. Ratings are stated in hours or minutes. fire-resistance rating: a designation indicating the dura- tion of the fire test exposure to which components of building construction (walls, floors, roofs, beams, and columns) are exposed and for which itmetall the accept- ance criteria as determined in accordance with a recog- nized fire test standard. Ratings are stated in hours or minutes. fire-resistive construction: a method of construction that prevents or retards the passage of hot gases or flames, specified by the building code. fixed side panel: a panel used to close a hoistway enclo- sure opening on the side of a hoistway entrance. flat steps: the distance, expressed in step lengths, that the leadingedge ofthe escalatorstep travels afteremerg- ing from the comb before moving vertically. gate: the moveable portion(s) of an entrance that closes the opening. A gate has through openings. horizontally sliding collapsible gate: a series of horizon- tally sliding vertical members, joined by a scissors-like linkage that allows the assembly to collapse. 9 horizontally sliding noncollapsible gate: a noncollapsible assembly consisting of one or more sections that slide horizontally. verticallyslidinggate: a counterweighted orcounterbal- anced assembly, consisting of one or more sections that move vertically to open or close. gate, semiautomatic: a gate that is opened manually and that is closed automatically as the car leaves the landing. governor: see speed governor. governor pull-through tension (force): the magnitude of the tensile load developed in the moving governor rope afterthe governorrope retardingmeans is actuated. governor rope retarding means: a mechanical means of developing a sufficient force in the governor rope to activate the car or counterweight safeties or to trip the governor rope releasing carrier, where used. Such mechanical means include, but are not limited to, rope- gripping jaws, clutch mechanisms, and traction arrangements. hall lantern: an audible and visual signaling device located at a hoistway entrance to indicate which car is answering the call and the car’s intended direction of travel. handrail stand: the uppermost portion of the balustrade that supports and guides the handrail. hoistway (shaft), elevator, dumbwaiter, or material lift: an opening through a building or structure for the travel of elevators, dumbwaiters, or material lifts, extending from the pit floor to the roof or floor above. hoistway, blind: the portion of a hoistway where hoistway entrances are not provided. hoistway, multiple: a hoistway with more than one ele- vator, dumbwaiter, or material lift. hoistway, single: a hoistway with a single elevator, dumbwaiter, or material lift. hoistway, mine: The area within a mine shaft, and its aboveground structure required for the elevator equip- ment, associated supports, and operations, including a minimum of 450 mm (18 in.) around same. hoistway access switch: a switch, located at a landing, the function of which is to permit operation of the car with the hoistway door at this landing and the car door or gate open, in order to permit access to the top of the car or to the pit. hoistway door: see door. hoistway door electric contact: see door or gate electric contact. hoistway door or gate locking device: a device that secures a hoistway door or gate in the closed position and prevents it from being opened from the landing side except under certain specified conditions.