SAFETY CODE FOR ELEVATORS DUMBWAITERS AND ESCALATORS Rules for Construction, Inspection, Maintenance, and Operation
|Publication Date:||1 July 1931|
This code of safety standards covers the construction, inspection, maintenance, and operation of elevators, dumbwaiters, escalators, and their hoistways except as stated in the following paragraph.
This code does not apply to belt, bucket, scoop, roller or similarly inclined or vertical freight conveyors, tiering or piling machines, mine elevators, skip hoists, wharf ramps or apparatus in kindred classes, amusement devices, stage lifts or lift bridges, elevators of capacity exceeding 30,000 pounds and platform area exceeding 300 square feet when suspended by cables near each corner of the hoistway and at additional positions, nor to elevators used only for handling building materials and mechanics during the building construction. These types of apparatus should be made subject to suitable specification for each type.
NOTE: The code recognizes the deteriorating influence of wear, rough usage, and the atmospheric conditions under which elevator apparatus, particularly door locks, interlocks, and electric contacts, are required to operate. In the design and installation of such apparatus due regard must be given to these conditions and to the part of the structure upon which such apparatus is mounted.
PURPOSE, INTERPRETATION AND EXCEPTIONS. The purpose of this code is to provide reasonable safety for life and limb. In case of practical difficulty or unnecessary hardship the requirements or permit the use of other devices or methods, but only when it is clearly evident that reasonable safety is therby secured.
NOTE: It is suggested that in cases where exceptions are asked for, the forcing authority consult with the sectional committee on safety code for elevators, care of American standards associations, 29 west 39th street, new york city, or care of the secretary of the committee, bureau of standards Washington D.C such inquiries will be referred to the sub-committee on research, recommendation, and interpretations who will be glad to advise as to the intended meaning of any code requirement ot to suggest modifications in particular cases where such suggestions are desired. Such consultation will tend to bring about uniform application of the code and will keep the committee in formed of criticisms which should be considered in future revisions of the code.