Zida zolimbitsa thupi
1. Opangidwira madenga a tin: kutengera kapangidwe kazinthu zomwe zimapangidwira kuti madenga a tin amawonetsetsa kuti madenga a tin amatsimikizira kugwirizana komanso kukhazikika ndi zida zodetsa.
2. Kukhazikitsa mwachangu: kapangidwe kosavuta komanso zowonjezera zokwanira zimapangitsa kukhazikitsa mwachangu komanso kugwiritsa ntchito nthawi yomanga ndi mtengo.
3. Kutulutsa-chitsimikiziro: Kapangidwe kakang'ono kokhazikika ndi zinthu zopangira madzi ndi zinthu zosagwedezeka zimalepheretsa chinyezi ndikuteteza madenga padenga kuchokera kuwonongeka.
4. Chokhacho: Mphamvu-wamphamvu kwambiri aluminiyamu sloy kapena zinthu zosapanga dzimbiri, kugonjetsedwa ndi nyengo, ndikuonetsetsa kuti nthawi yayitali.
5. Kusintha kosinthasintha: Kutalika kwa bulaketi kumatha kusinthidwa kuti muzolowera ma ngolo mbali zosiyanasiyana, kwezani mphamvu yopepuka ndikusintha mphamvu zaka zotsatira.