Kirjin hasumiya na yau da kullun yana da ƙayyadaddun bayanai masu zuwa:
Matsakaicin tsayi mara tallafi - ƙafa 265 (mita 80) Krane na iya samun jimlar tsayi fiye da ƙafa 265 idan an ɗaure shi cikin ginin yayin da ginin ke tashi a kusa da crane.
Matsakaicin isa - ƙafa 230 (mita 70)
Matsakaicin ƙarfin ɗagawa - ton 19.8 ( metrik ton 18), tonne-mita 300 (metric ton = tonne)
Ma'aunin nauyi - ton 20 (tan metric 16.3)
Matsakaicin nauyin da crane zai iya ɗaga shine metric ton 18 (fam 39,690), amma crane ba zai iya ɗaukar nauyin haka ba idan an sanya kaya a ƙarshen jib.Matsakaicin kusancin kaya zuwa mast ɗin, ƙarin nauyi na crane zai iya ɗagawa lafiya.Ma'aunin mita tonne 300 yana gaya muku dangantakar.Misali, idan mai aiki ya sanya nauyin da ya kai mita 30 (ƙafa 100) daga mast ɗin, crane na iya ɗaga iyakar tan 10.1.
Crane yana amfani da maɓalli biyu masu iyaka don tabbatar da cewa mai aiki ba ya yi lodin crane:
Matsakaicin madaidaicin madaidaicin kayan aiki yana lura da ja akan kebul ɗin kuma yana tabbatar da cewa nauyin bai wuce tan 18 ba.
Canjin lokacin lodawa yana tabbatar da cewa mai aiki bai wuce ma'aunin tonne-mita na crane yayin da lodi ke motsawa akan jib.Taron kan cat a cikin sashin kisa na iya auna adadin rugujewa a cikin jib da hankali lokacin da yanayin kisa ya faru.
Yanzu, zai zama babbar matsala idan ɗaya daga cikin waɗannan abubuwan ya faɗi akan rukunin aiki.Bari mu gano abin da ke kiyaye waɗannan katafaren gine-gine a tsaye.