III. Yiziphi Izinto Zokudla Zebanga Lokudla
A. Incazelo nezici zezinto zebanga lokudla
Izinto zebanga lokudla zingathintana nokudla. Futhi ukucubungula kwayo kufanele kulandele izindinganiso zokuhlanzeka kanye nezidingo zokuphepha. Izici zezinto zebanga lokudla zihlanganisa lokhu okulandelayo. Okokuqala, izinto zokusetshenziswa zidinga ukuhlolwa okuqinile kanye nokulawulwa kwenqubo yokukhiqiza. Futhi kudingeka zingabi yingozi futhi zingabi yingozi. Okwesibili, izakhiwo ezinhle zemishini nezokucubungula, ezifanele ukukhiqizwa nokucubungula ukudla. Okwesithathu, ingahlangabezana nempilo yeshelufu kanye nezidingo zokuphepha kokudla kokudla. Okwesine, ngokuvamile inokumelana okuhle kwamakhemikhali, ukuzinza, nokucwebezela.
B. Izidingo zezinto zebanga lokudla
Izidingo main for ukudla grade materials kanje. Okokuqala, azinabuthi futhi azinangozi. Izinto ezisetshenziswayo ngeke zikhiqize izinto eziyingozi noma zidale ukulimala empilweni yomuntu kanye nemvelo. Okwesibili, akulula ukuwohloka. Impahla kumele igcine ukuzinza, ingaphenduli ngokudla, futhi ngeke ibangele iphunga noma ukonakala kokudla. Okwesithathu, iyakwazi ukumelana namazinga okushisa aphezulu. Impahla ingamelana nokwelashwa kokushisa. Akufanele ibole noma ikhulule izinto eziyingozi. Okwesine, impilo nokuphepha. Ukukhiqizwa, ukugcinwa, ukupakishwa, kanye nokuthuthwa kwezinto zokwakha kufanele kulandele izindinganiso zenhlanzeko nezokuphepha. Futhi ingakwazi ukugcina isimo esiyinyumba sithintana nokudla. Okwesihlanu, ukuthobela umthetho. Izinto ezisetshenziswayo kumele zilandele imithetho neziqondiso ezifanele.