Answer
Lokacin da aka matsa ruwan magudanar ruwa daga tsayinsa kyauta ($H_f$) zuwa tsayin aikinsa ($H_w$) ko tsayayyen tsayi ($H_s$), tãguwar ruwa suna karkata, yana haifar da ma'anar diamita $D_m$ ya karu saboda juzu'i na sassan baka. Za'a iya ƙididdige kusan fadada $Δ D$ ta amfani da alaƙa $Δ D = 0.02 \cdot \ frac{(H_f - H_w)^2}{D_m}$. A cikin ƙaƙƙarfan shigarwa na juriya, wannan haɓakar radial yana da mahimmanci don hana ɗaurewa. Dole ne injiniyoyi su lissafta 'Mafi girman Expanded OD' ta amfani da $OD_{max} = OD_{free} + \sqrt{L^2 + R^2} - R$, inda $L$ shine tsayin igiyar ruwa kuma $R$ shine radius na curvature. Idan lokacin bazara ya takura ta hanyar busa, wannan haɓaka yana haifar da damuwa na hoop na biyu wanda zai iya haifar da samari da wuri ko 'scuffing' a jikin bangon da ba a taɓa gani ba, yana buƙatar raguwa cikin ƙayyadaddun OD na farko.
