Radius na Elbow

Radius mai lankwasawa na gwiwar hannu yawanci yana ninka diamita na bututu sau 1.5 (R=1.5D), wanda ake kira gwiwar hannu mai tsayi; idan radius ɗin ya yi daidai da diamita na bututu (R=D), ana kiransa gwiwar hannu mai gajeren radius. Takamaiman hanyoyin lissafi sun haɗa da hanyar diamita na bututu sau 1.5, hanyar trigonometric, da sauransu, kuma ya kamata a zaɓa bisa ga yanayin aikace-aikacen ainihin.

Rarrabuwa gama gari:
Gwiwar hannu mai tsayi: R=1.5D, ya dace da yanayin da ke buƙatar ƙarancin juriya ga ruwa (kamar bututun sinadarai).
Gwiwar hannu mai gajeren radius: R=D, ya dace da yanayi mai ƙarancin sarari (kamar bututun gini na ciki).

Hanyoyin lissafi:
Hanyar diamita na bututu sau 1.5:
Tsarin: Radius mai lanƙwasa = Diamita na bututu × 1.524 (an zagaye shi zuwa lamba mafi kusa).

Hanyar Trigonometric:
Ya dace da gwiwar hannu marasa daidaito, ana buƙatar ƙididdige ainihin radius bisa ga kusurwar.

Yanayin aikace-aikace:
Gwiwar hannu mai tsayi: Yana rage juriyar ruwa, wanda ya dace da jigilar kaya daga nesa.
Gwiwar hannu mai gajeren zango: Yana adana sarari amma yana iya ƙara yawan amfani da makamashi.