Tuubada godka leh waa nooc ka mid ah tuubo leh god ka dib marka la rogo. Caadi ahaan: tuubo godad wareegsan leh, tuubo godad leh oo qaabaysan, iwm. Waxaa loogu yeeraa tuubo godad leh sababtoo ah godka muuqda waxaa lagu arki karaa qaybta tuubada. Noocan tuubo ayaa ka dhigi kara dareeraha inuu dhex maro derbiga qaab-dhismeedkan qalalaasaha, soo saaro meelaha kala-soocidda qulqulka, oo sameeya wareegyo leh xoog iyo cabbirro kala duwan. Waa wareegyadan kuwa beddela qaab-dhismeedka socodka dareeraha oo kordhiya qalalaasaha u dhow derbiga, si loo hagaajiyo isku-dhafka filimka wareejinta kulaylka ee dareeraha iyo derbiga.

a. Tuubada rogrogmada ee tuubada rogidda waa in lagu rogo jeexdin jiif ah ama god wareegsan oo leh qoto dheer iyo qoto dheer oo ka imanaya dibadda tuubada wareegsan sida waafaqsan shuruudaha naqshadeynta, iyo sameynta feedh toosan oo soo baxaysa ama feedh wareegsan oo ku taal derbiga gudaha ee tuubada, sida ku cad Jaantuska 1. Godka derbiga dibadda iyo soo bixidda derbiga gudaha ee tuubada ayaa kor u qaadi kara wareejinta kulaylka ee dareeraha labada dhinac ee tuubada isku mar. Waxay si gaar ah ugu habboon tahay xoojinta wareejinta kulaylka ee dareeraha hal-waji ah ee tuubada iyo xoojinta uumiga uumiga iyo filimka dareeraha ah ee karkaraya wareejinta kulaylka ee dareeraha ka baxsan tuubada ee ku jirta isweydaarsiga kulaylka.

b. Tuubada godadka wareegsan waxay leedahay hal marin iyo wareegyo badan iyo noocyo kale. Ka dib marka la sameeyo, waxaa jira god leh xagal wareegsan oo ka baxsan tuubada godadka wareegsan, waxaana jira feeraha isku dhafan ee u dhigma tuubada. Godadka wareegsan waa inaysan aad u qoto dheerayn. Inta daloolku qoto dheer yahay, ayuu sii weynaadaa iska caabbinta socodka, xagasha wareegsan ee weyn, iyo inta badan isku-dhafka filimka wareejinta kulaylka ee tuubada godadka leh. Haddii dareeruhu uu ku wareegi karo godka, tirada duntu saameyn yar ayay ku leedahay wareejinta kulaylka.

c. Tuubada godadka isgoysyada ah waxaa sameeya rogid joogto ah oo isgoysyada ah. Dibadda tuubku waa god isgoys ah oo isgoysyada tuubyada ku teedsan 90 °, gudaha tuubkuna waa feedh isgoys ah oo isgoysyada ah. Ka dib marka socodka dareeruhu uu dhex maro feeraha isgoysyada ah ee tuubbada, ma soo saarto socodka wareegga, laakiin wuxuu soo saaraa kooxo isgoys ah oo ku teedsan qaybta oo dhan, si loo xoojiyo wareejinta kulaylka. Tuubbada iskutallaabta ah waxay sidoo kale leedahay saameyn xoog leh oo ku saabsan wareejinta kulaylka karkaraya ee dareeraha ku jira tuubada, taas oo kordhin karta isku-darka wareejinta kulaylka karkaraya 3-8 jeer.