Official Answer
Answer
Ƙarfin tuƙi mai tasiri yana da matuƙar kula da zurfin tsagi $d$. Tsagi mara zurfi yana rage wurin tuntuɓar, yana ƙara damuwa mai ɗaukar nauyi. Bugu da ƙari, radius $r$ na kusurwa dole ne a kiyaye kadan (yawanci $< 0.1 \ cdot T$) don hana zobe daga 'rago' daga cikin tsagi. Idan radius ya yi girma da yawa, nauyin $P$ ya haifar da wani ɓangaren radial $ P \ cdot \ tan (\ phi) $ wanda ke tilasta zoben don faɗaɗa (na ciki) ko kwangila (na waje), yana haifar da gazawar da wuri. Ya kamata a daidaita ma'aunin tsaro $S_f$ bisa ga rabon $r/d$; yayin da $r$ ke ƙaruwa dangane da $d$, dole ne a rage girman ƙarfin tuƙi da kusan kashi 50%.
