Tsoma zafi sassan galvanized(abubuwan da aka saka prefabricated) sune abubuwanda aka riga aka sanya su (binne su) a cikin ɓoyayyun ayyuka. Abubuwan haɗi ne da kayan haɗi waɗanda aka sanya yayin jifa da tsari kuma ana amfani dasu don haɗuwa yayin shimfiɗa babban abu. Bayan zafin farfajiyar farfajiyar zafi, ana samun sakamako na antirust. Don sauƙaƙe shigarwa da gyarawa na tushen kayan aikin injiniya na waje. Yawancin sassan da aka saka an yi su ne da ƙarfe. A cikin tsarin, an sanya kusoshi a cikin tsari a wani lokaci, kuma ana amfani da zaren da aka ajiye a ɓangaren sama don gyara abubuwan da ke ciki da kuma taka rawa dangane da gyarawa. Yana da gama-gari don adana kusoshi don kayan aiki. Dangane da zane don gwargwadon gwargwadon gwargwadon gwargwadon ƙarfin-saka kusoshi, sassan da aka saka da kuma tsayayyen gwaji na ɗan lokaci kuma daga ƙarshe aka daidaita.