Mabatani a konkriti ndi malo ofunika omanga mu malonda omanga ndi kupanga maboti awa amafunikira kugwiritsa ntchito makina apadera monga makonzedwe opanga makina ndikutchinga makina. Makinawa amatenga gawo lofunikira
Mu makampani omanga mphamvu ya mphamvu, kufunikira kwa okwera - zomangira zomangamanga sizinakhaleponso zambiri. Mwala wanji womwe ukufunidwa ndikugwiritsa ntchito makina a simenti opanga simenti, omwe ndi assensia