Majajjawa lebur wadda ke da gajeriyar ƙafafu kaɗan na iya kawo dakatar da aikin dagawa. Tunanin nan da nan: me yasa ba kawai haɗa majajjawa biyu tare ba? Al'adar haɗa majajjawa ta zama ruwan dare gama gari, amma bisa ga OSHA 1910.184(c)(2) da ASME B30.9, ba za a gajarta ko tsawaita majajjawa ta hanyar dunƙule ko murɗawa ba, kuma ba za a haɗa ta da kulli ba.

Dokar 1/10 mai sauƙi ne amma mahimmancin ma'auni na ritaya don slings: lokacin da lalacewa ta rage girman girman yanar gizon ta 1/10 ko fiye, dole ne a cire majajjawa daga sabis. An ƙayyade wannan ƙa'idar a cikin EN 1492-1 kuma ASME B30.9 ta gane shi azaman maɓalli mai nuna alamar lalacewa. Wannan jagorar yana bayyana ma'anar ƙa'idar 1/10, yadda ake auna faɗin gidan yanar gizon daidai, dalilin da yasa aka zaɓi wannan ƙofar, da yadda ake amfani da shi a cikin binciken yau da kullun. Don masu sa ido na rigingimu da ƙwararrun aminci, fahimtar wannan ƙa'ida mai sauƙi na iya hana yin amfani da majajjawa masu haɗari.

Ƙarƙashin majajjawa yana yin fiye da ɗaga kaya kawai—yana kāre shi. Faɗin falon yanar gizo mai lebur yana rarraba nauyin nauyi akan wani yanki mafi girma, yana rage matsi sosai a kowane wuri guda. Wannan ita ce ainihin ka'idar kimiyyar lissafi a bayan majajjawa lebur: Matsi = Ƙarfi ÷ Yanki. Ta hanyar haɓaka wurin tuntuɓar, majajjawa mai lebur suna rage haɗarin lalacewa, haƙora, da murkushe su—yana mai da su zaɓin da aka fi so don ɗaga abubuwa masu laushi, ƙarewa, ko cikin sauƙin lalacewa. Wannan jagorar yana bayanin ilimin kimiyyar lissafi na rarraba matsa lamba, yana kwatanta majajjawa mai lebur da sauran hanyoyin ɗagawa, kuma yana ba da jagora mai amfani don zaɓar faɗin majajjawa daidai don aikace-aikacenku.

Majajjawa mai ɗagawa tana zuwa cikin takamaiman launi-amma wannan launi ba don ƙayatarwa ba ce kawai. Dangane da EN 1492-1 (slings webbing slings) da EN 1492-2 (zagaye slings), kowane launi ya dace da ƙayyadaddun ƙayyadaddun ƙayyadaddun Load na Aiki (WLL), yana ba da damar gano saurin aiki da sauri a kan wurin aiki.

Majajjawa zagaya baya zuwa da ranar ƙarewar da aka buga akan tambarin sa-amma wannan baya nufin yana dawwama har abada. Dangane da EN 1492-2, ƙa'idodin Turai don zagaye, iyakokin aiki (WLL) da yanayin aminci an ƙayyade, amma rayuwar sabis ɗin ya dogara da ainihin yanayin amfani. Wasu masana'antun sun ƙididdige iyakar tsawon shekaru 10 daga farkon amfani a ƙarƙashin ingantattun yanayi.

Zaɓi tsakanin majajjawar polyester flat da majajjawar nailan ba batun ɗaya bane 'mafi kyau' fiye da ɗayan-ya dogara gaba ɗaya akan yanayin aikace-aikacen. Dukansu kayan biyu suna raba iyakokin nauyin aiki iri ɗaya da kewayon zafin jiki (-40 ° C zuwa 100 ° C) ƙarƙashin EN 1492-1, amma sun bambanta sosai a cikin haɓakawa, juriya na sinadarai, da amsa danshi. Nailan yana shimfiɗa 6-10% a ƙimar nauyi kuma yana tsayayya da alkalis amma acid ya lalata shi. Polyester yana shimfiɗa kawai 3-4% kuma yana tsayayya da acid amma alkalis ya lalace. Wannan jagorar tana ba da cikakken kwatance don taimakawa injiniyoyi da ƙwararrun ƙwararru don zaɓar madaidaicin kayan majajjawa don takamaiman yanayin aiki.