Chitoliro chosapanga dzimbiri ndi mtundu wa dzenje yaitali kuzungulira zitsulo, amene chimagwiritsidwa ntchito mapaipi kufala mafakitale monga mafuta, makampani mankhwala, mankhwala, chakudya, makampani kuwala, zida makina ndi zigawo zikuluzikulu makina structural.Kuonjezera apo, pamene kupindika ndi mphamvu zowonongeka ndizofanana, kulemera kwake kumakhala kopepuka, kotero kumagwiritsidwanso ntchito kwambiri popanga zida zamakina ndi zomangamanga.Amagwiritsidwanso ntchito ngati mipando, zida zakukhitchini, ndi zina.