Official Answer
Answer
Lokacin da kayan tsagi ya yi ƙarfi sosai, yanayin gazawar yana motsawa zuwa yanke zoben da kansa. Ana ƙididdige ƙarfin abin tuƙi dangane da ƙarar zobe $P_r a matsayin $P_r = \ frac{D \cdot t \cdot π τ_{ult}}{S}$, inda $t$ shine kauri na zobe kuma $τ_{ult}$ shine ƙarfin juzu'i na kayan (yawanci $ τ_{ult} σs = 6). Don zoben karkace da aka yi da karfen carbon SAE 1070 tare da ƙarfin ɗaure na $200$ ksi, ƙarfin shear zai zama kusan $120$ ksi. Yana da mahimmanci a lura cewa zoben karkace sau da yawa suna jujjuyawa; duk da haka, lissafin shear yawanci yana mai da hankali kan kauri na juzu'i ɗaya sai dai idan juyi sun daidaita daidai a cikin raba kaya. Don zoben juyi 2-style Smalley, ingantaccen $t$ shine jimillar kauri.
