Amagwiritsidwa ntchito makamaka mu konkriti ndi mwala wandiweyani wachilengedwe, kapangidwe kachitsulo, njanji, mizere ya elevator, makina, mabulaketi, zitseko, masitepe, kumaliza kwa khoma, Windows, ndi zina zambiri, oyenera kugwira ntchito yokonza katundu wapakatikati.