ASME A17.6:2017 pdf free download – Standard for Elevator Suspension, Compensation, and Governor Systems
covers the general requirements for the more common types of stranded steel wire ropes for hoisting, compensation, and governorapplications on passengeror freight elevators. Included in the scope of this Part are steel wire ropes in various grades and constructions from 4 mm to 38 mm ( 5 ∕ 32 in. to 1 1 ∕ 2 in.) manufactured from uncoated wire or metallic coated wire. For specific applications, additional or alternative requirements may apply, provided equivalent safety is maintained. Part 1 covers regular lay and lang lay, preformed and nonpreformed elevator rope in nominal imperial dimen- sions as well as SI dimensions. Various constructions of steel wire rope are covered, i.e., Seale, Warrington, and Filler. Part 1 covers the broad range of wire materials in current use including Iron, Traction, Extra High Strength Traction, 1570 Single, 1180/1770 Dual, 1370/ 1770 Dual, 1770 Single, 1960 Single, and 2300 Single. Various rope core materials in current use are covered by this Part including natural and synthetic fiber cores and steel cores. This Part covers ropes made from uncoated wires or metallic coated wires (e.g., galvanized). This Part includes criteria for testing and compliance of rope, replacement of rope, and ordering information for steel wire rope.
NOTE: Part 1 is written in the combined format, presenting re- quirements for rope products in both Imperial units, utilized historically in the SI and U.S. Customary units as recognized by current international standards. The values stated in SI (metric) units or Imperial units are to be regarded separately. The values are not exact equivalents; therefore, each system must be used independently of the other.
1.3.2.2.2 Rope Construction.
The detail and arrange- ment of the various elements of the rope, taking into account the number of strands and the number of wires in the strand. For designation details refer to Tables I-1.1-1, I-1.1-2, 1-1.1-3, and I-1.1-4. NOTE: Rope construction is designated by listing the number of outerstrandsfollowedbythenumberofwiresineachstrandand the designation for the type ofconstruction, e.g., 6 × 25F. The “×” symbol is read as “by.”
1.3.2.3 Rope Grade.
A level ofrequirementofbreaking force that is designated either by a number (e.g., 1570, 1770) or historical grade designations (e.g., Traction, Extra High Strength). See 1.6.3. NOTE: Rope grade does notimplythatthe actual tensile strength ofthe wires in the rope are necessarily ofthis grade as multiple wire grades can be used in the same rope.
1.4.2 Rope Core
Cores ofstranded ropes are normally ofeither fiber or steel composition. Core lubricants shall be compatible with the lubricant applied during rope stranding, having no deleterious effects on any rope component.
1.4.2.1 FiberCore. Fibercores largerthan8 mm (0.315 in.) diameter shall be doubly closed. The cores shall be of uniform hardness, effectively supporting the strands.
1.4.2.1.1 Natural Fiber Core. All natural fiber cores shall be hard-twisted, sisal ormanilavegetable fibermade in accordance with ISO 4345. Core lubricant content shall be 10% to 15% by weight of the dry fiber material that shall be measured bythe method in ISO 4345, AppendixC.
1.4.2.1.2 Synthetic Fiber Core. Synthetic fiber cores shall be made of fiber made from polyolefins (i.e., poly- propylene or polyethylene), polyester, or other suitable synthetic fiber agreed to by purchaser and supplier. Lubricant content shall be the subject of agreement between purchaser and supplier.
1.4.2.2 Steel Core. Steel main cores, use subject to agreement between supplier and purchaser, shall be an independent wire rope core (IWRC) for ropes larger than 7 mm, unless otherwise specified. Steel cores for ropes 7 mm and smaller may be either a single strand or IWRC. Steel cores shall be lubricated. Cores closed in one operation (parallel lay) with the outer strands of the rope may be specified by agreement between the supplier and the purchaser.