Answer
Don hana gazawar birgima, zurfin tsagi $d$ dole ne ya isa don tabbatar da cewa zoben ya kasance a zaune ko da a lokacin da ake sa ran za a iya turawa. Ka'idar babban yatsan hannu ita ce, zoben ya kamata a zaunar dashi aƙalla $1/3$ zuwa $1/2$ na kaurin bangon radial $b$ cikin tsagi. Ta hanyar lissafi, ana gudanar da kwanciyar hankali ta hanyar rabon zurfin tsagi zuwa kaurin zobe. Don daidaitaccen ma'auni na tsaro na $2.0$, ana ƙididdige mafi ƙarancin zurfin rami $d_{min}$ bisa la'akari da ƙarfin yawan amfanin ƙasa $\sigma_y$ da ɗora nauyi $P$: $d_{min} = (P \ cdot S) / (D \ cdot \ pi \ cdot \ sigma_y) $. A cikin kayan laushi kamar robobi ko aluminium, tsagi dole ne ya yi zurfi sosai fiye da taurin karfe don hana abu daga sassaske ko 'tsara' a ƙarƙashin gefen zobe.
