4. Ukugcoba kokujikeleza kwamafutha, ukugcinwa okulula
Umphathi wokufaka uholela ekusebenzeni okuphelele kwephrojekthi
3. Ukudluliselwa okuzinzile, ukudluliswa kwamaketanga noma ukuxhumana okuqondile;
3. Impilo ende yokugqoka izingxenye, ukukhishwa kwekhanda lengxube ye-alloy elingagugi ngaphezu kwamathani angu-5,000, ukuphila kwendandatho yegiya ngaphezu kwamathani angu-15,000;