ASME B30.9:2021 pdf download

ASME B30.9:2021 pdf download.Slings
Volume B30.9 includes provisions that apply to the fabrication, attachment, use, inspection, testing, and maintenance of slings used for load-handling purposes, used in conjunction with equipment described in other volumes of the B30 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.
abnormaloperating conditions: environmental conditions thatare 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. angleofchoke:the angle formedinaslingbodyas itpasses through the choking eye or fittings. angle ofloading: the acute angle between the sling legand the plane perpendicular to the direction ofapplied force, sometimes referred to as horizontal angle when lifting (see Figure 9-1.5-1). baskethitch: a method ofrigging 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 ofmultiple 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 ofwire rope composed ofsix indi- vidual wire ropes laid as strands around a wire rope core.cable-laid rope sling, mechanical joint: a wire rope sling made from a cable-laid wire rope with eyes fabricated byswagingoneormoremetalsleevesovereachropejunc- tion. chokerhitch: a method ofrigging a sling in which one end ofthe sling is passed around the load, then through itself, an eye opening, an end fitting, or other device, and attached to a hook, shackle, orotherload-handlingdevice. component: any load-bearing element of the sling including the chain, wire rope, metal mesh, synthetic rope, synthetic webbing, roundsling core yarns, thread, and fittings, as applicable. component strength: the published or industry accepted minimum breaking strength or minimum breaking force of the weakest component of the sling. coupling link: mechanical coupling link: a nonwelded cross-pinned link used as a connector to join a sling leg to a fitting. weldedcoupling link: analloysteel weldedlinkused as a connectortojoinalloysteelchaintoanothercomponentof the sling crossrod: a wire used to join spirals ofmetal mesh to form the complete fabric. D/d ratio: the ratio between the curvature taken by the sling, D, and the diameter ofthe wire rope, synthetic rope, or chain, d. denier: a mass-per-unit-length measure equal to the weight in grams of 9 000 m of the material. Denier is a direct numbering system in which the lower numbers represent the finer sizes and the higher numbers the coarser sizes. design factor: the ratio between the designed breaking load ofthe fabricated sling and the rated load ofthe sling. designed 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 sling (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.endless sling (wire rope): a wire rope sling made endless from one continuous length of cable-laid or strand-laid rope with ends joined by one or more metallic fittings (mechanical joint). eyeopening:theopeningintheendofaslingfortheattach- mentofthehook,shackle,orotherload-handlingdeviceor the load itself. fabric(metalmesh): the flexible portion ofthe sling exclu- sive of end fittings consisting of a series of transverse spirals and cross rods. fabric length (metal mesh): the distance of metal mesh between the end fittings. fabric thickness (metal mesh): the nominal overall thick- ness of the spirals. fabrication efficiency: the strength ofthe fabricated sling, as a percentage of the material strength prior to fabrica- tion. fitting: any load-bearing hardware used to fabricate the slingsuchasaswagesleeveforwireropeoracouplinglink for alloy chain, or an end attachment such as a hook or master link.