ASME 30.9-2021 pdf free download.Slings.
SECTION 9-0.1: SCOPE OF ASME B30.9
Volume B30.9 includes provisions that apply to the fabrication, attachment, use, inspection, testing, and maintenance of slings used for Ioa(I—handling purposes, used in conjunction with equipment described in other volumes of the 1330 Standard, except as restricted in ASME B30.12 and ASME B30.23. Slings fabricated from alloy steel chain, wire rope, metal mesh, synthetic fiber rope, synthetic webbing, and polyester and high performance fiber yarns in a cover(s) are addressed.
SECTION 9-0.2: DEFINITIONS
abnormal operating conditions: environ in ental con ditions that are unfavorable, harmful, or detrimental to or for the operation of a sling such as excessively high or low ambient temperatures, exposure to weather, corrosive fumes, dust-laden or moisture-laden atmospheres. and hazardous locations.
abrasion: the mechanical wearing of a surface resulting from frictional contact with other materials or objects.
angle of choke: the angle formed in a sling body as it through the choking eye oi fittings.
angle of 10(111mg: the acute angle hetween the sling leg and the plane perpendicular to the direction of applied force, sometimes referred to as horizontal angle when lifting (see Figure 9-1.5-1).
basket hitch: a method of rigging a sling in which the sling is passed around the load, and both eye openings or end fittings are attached to a hook, shackle(s), or other load— handling device.
body (sling): that part of a sling between the eyes, end fittings, or loop eyes.
braided wire rope: a rope formed by plaiting component wire ropes.
braided wire rope sling: a sling made from braided rope. bridle sling: a sling composed of multiple legs with the top ends gathered in a fitting that attaches to a hook, shackle, or other load-handling device.
cable-laid rope: a type of wire rope composed of six individual wire ropes laid as strands around a wire rope core.
cahie—kild rope sling, mechanical joint: a wire rope sling made from a cable-laid wire rope with eyes fabricated by swaging one or inure metal sleeves over each rope junction.
choker hitch: a method of rigging a sling in which one end of the sling is passed around the load, then through itself, au eye opening, an end fitting, or other device, and atta(:hed to a hook, shackle, or other load—handling devi(:e.
component: any load-bearing element of the sling including the chain, wire rope, metal mesh, synthetic rope, synthetic webbing, roLlndsling core yarns, thread, and fittings, as applicable.
component str-ength: the published or industry accepted miii i iii u iii breaking strength oi’ mini mum breaking force of the weakest component of the sling.
cvupiinq link:
mechanical coupling link: a nonwelded cross-pinned link used as a connector to join a sling leg to a fitting.
welded coupling link: an alloy steel welded liii k used as a con nector to join alloy steel chain to another component of the sling
cross rod: a wire used to join spirals of metal mesh to form the complete fabric.
1)/cl ratio: the ratio between the curvature takeui by the sling, D, and the diameter of the wire rope, synthetic rope, or chain, ci.
denier: a mnass-per-uuiit-length measure equal to the weight in grams of 9 OO() iii of the material. l)enier is a direct numbering system in which the lower numbers represent the finer sizes and the higher numbers the coarser sizes.
clesqn factor: the ratio between the designed breaking Load of the fabricated sling and the rated load of the sling.
(1esqned breaking load: the minimum load at which a newly fabricated and unused sling is expected to break when loaded to destruction in direct tension.
endless slinq (alloy chain): a chain sling made from one continuous length of alloy chain with both ends joined by a welded link or mechanical coupling link.