1) Wurin ajiyar karfe ko ma'ajiya, yakamata a zaba a cikin tsaftataccen wurin magudanar ruwa, nesa da iskar gas ko masana'antar kura da ma'adinai.Kasancewa a ƙasa don share duk ciyayi da tarkace, kiyaye ƙarfe mai tsabta;
2) A cikin wani sito ba tare da acid, alkali, gishiri, siminti, karfe da sauran m kayan tarawa tare.Ya kamata a tara nau'ikan ƙarfe daban-daban daban, don hana rikicewa, guje wa lalata lamba;
3) Sashe masu nauyi, dogo, karfen kunya, babban bututun karfe mai diamita, kayan ƙirƙira, da sauransu, na iya buɗe juji;
4) Ƙarfe mai ƙanƙara da matsakaici, sandar waya, rebar, a cikin bututun ƙarfe mai diamita, waya na ƙarfe da igiyar waya, da dai sauransu, ana iya sa ran a cikin rumbun ajiya mai kyau, amma dole ne ya kasance a kan ciyawar ƙasa;
5) Wasu ƙananan ƙarfe, takarda, tsiri, takardar karfe na silicon, ƙananan ma'auni ko bututun ƙarfe na bakin ciki, kowane nau'in sanyi-birgima, ƙarfe mai sanyi da tsada, samfuran ƙarfe masu lalata, ana iya adanawa;
6) Baitul mali ya kamata a dogara da zaɓaɓɓen yanayin yanayin ƙasa, babban ɗakin ajiya na yau da kullun, wato rufin da bango, kofofi da tagogi, tare da na'urar samun iska na Baitulmali;
7) Baitul mali yana buƙatar kulawar rana ga samun iska, ruwan sama kusa da kula da danshi, da kiyaye yanayin ajiya mai kyau.