Mzere wopanga zida zamakina opanda njerwa: zinthu zomwe zimagwiritsidwa ntchito ndi mitundu yosiyanasiyana

Njerwa za konkire ndi mtundu wa zomangira zobiriwira komanso zachilengedwe komanso gawo lofunikira la zida zatsopano zamakhoma. Amakhala ndi mikhalidwe yayikulu ingapo monga kulemera kwa kuwala, kukana moto, kutsekereza mawu, kusungitsa kutentha, kusawotchera, kukhazikika, komanso kusakhala ndi kuipitsidwa, kupulumutsa mphamvu komanso kuchepetsa kugwiritsa ntchito. Ndi kukwezeleza kolimba kwa zida zatsopano zomangira mdziko muno,njerwa zopanda konkritikukhala ndi danga lalikulu lachitukuko ndi chiyembekezo cha chitukuko. Makina opangira njerwa a Quangong amatha kupanga njerwa zopanda pake zamitundu yosiyanasiyana, ndipo mitundu ndi mphamvu za njerwa zimakwaniritsa zofunikira pakumanga zosiyanasiyana.

Kulimba kwa njerwa zapabowo kumapangitsa gawo lalikulu la njerwa zonse zopanda pake, motero zimatchedwa njerwa zopanda kanthu. Kukoma kwake nthawi zambiri kumakhala kopitilira 15% ya gawo lililonse la njerwa zopanda kanthu. Pamsika pali mitundu yambiri ya njerwa, makamaka njerwa zopanda simenti, njerwa zadongo, ndi njerwa zapabowo. Pokhudzidwa ndi ndondomeko zoyenera za dziko lino pa nyumba zopulumutsa mphamvu ndi zobiriwira, njerwa zopanda kanthu zakhala zikugwiritsidwa ntchito kwambiri pomanga nyumba m'zaka zaposachedwa. Tsopano gawo lalikulu la khoma la nyumba zogonamo nthawi zambiri limapangidwa ndi njerwa zopanda kanthu.