Malo osakaniza nthaka yokhazikika amagawidwa m'magulu awiri: malo osakaniza osasinthasintha osasinthasintha ndi malo osakaniza osasinthasintha osasinthasintha. Malo osakaniza osasinthasintha osasinthasintha ali ndi mphamvu ya matani 300 mpaka 800 pa ola limodzi ndipo amagwiritsidwa ntchito kwambiri popanga zipangizo zoyambira misewu. Ndi oyenera ntchito monga misewu, madamu, ndi misewu ya ndege. Malo osakaniza osasinthasintha oyendayenda ali ndi mphamvu ya matani 300 pa ola limodzi ndipo amagwiritsidwa ntchito makamaka popanga mipanda ya misewu kapena zinthu zokhazikika. Amatha kusinthidwa mosavuta kuti agwirizane ndi mitundu yosiyanasiyana ya nthaka yopanda simenti kapena yokhala ndi simenti.