Ubukonje-Ibimenyetso byubutaka
1. Inkunga ihamye: Inyandiko zihagaze zikozwe mubyuma byinshi cyangwa aluminiyumu alloy conloy hazameza imikorere yizuba mu bihe bitandukanye.
2. Guhindura ibintu byoroshye: gushyigikira guhinduranya akabari nubuyobozi, guhuza ahantu hatandukanye na geografiya no gucana amatara kugirango ushimishe imbaraga.
3. Kuvoma neza: Igishushanyo ntarengwa cyo gucunga amazi, bikagabanya ibibazo byamazi kandi bigana ubuzima bwa serivisi.
4. Ibikoresho biramba: Ibikoresho byicyuma bikoreshwa muguhangana numuyaga, imvura nibindi bihe bibi.
5.