Wokongoletsedwa wodetsedwa ndi woyenera kuzinthu zopanda ufa ndi tinthu tating'onoting'ono (monga: simenti, fly phulusa, laimu, ndi zina))
1. The Wosankhidwa Wokongoletsayo ali ndi kapangidwe kake, kukula kamtunda kakang'ono ka gawo komanso kukhazikika kwabwino.
2.Kula kokongola kumatha kugwiritsidwanso ntchito pofotokoza mbali ziwiri mu thanki yomweyo.
3. Makina owoneka bwino ndi otetezeka komanso othandiza kugwiritsa ntchito, ndipo mtengo wopanga ndi wotsika.
4. Zojambula zojambulidwa zimapangidwa ndi zigawo zingapo ndi zigawo zikuluzikulu, ndipo kapangidwe kake ndi kosavuta, komwe ndikosavuta kupanga, kusamalira ndi kusamalira ndikuthana ndi kusamalira.