Fufui vevela vaega ufiufi galvanized(prefabricated embedded parts) o vaega ia e muamua tuʻuina (tanu) i galuega natia. O ni vaega ma totoga ia e tuʻuina i le taimi o fausaga fausiaina ma e faʻaaoga mo fesiliaʻi pe a oʻo i luga superstructure. Ina ua maeʻa vevela galvanizing luga togafitiga, antirust aafiaga ua ausia. Ina ia mafai ona faʻafaigofieina le faʻapipiʻiina ma faʻamau o le faʻavae o fafo inisinia meafaigaluega. Tele vaega tuʻufaʻatasi e faia i uʻamea. I le fausaga, o faʻamau e ofi i totonu o le fausaga i le tasi taimi, ma o faʻamau faʻamau faʻatulagaina i le itu i luga o loʻo faʻaaogaina e faʻaleleia ai vaega ma faia ai se sao i le fesoʻotaʻiga ma faʻamau. E taatele le faʻasao o faʻamau mo mea faigaluega. E tusa ai ma ata mo gaioiga-fuaina faʻatulagaina-lagolago faʻamau-tuu faʻamau, ufiufi vaega ma le tumau tumau-toe suʻeina ma mulimuli ane faʻaleleia.