Fixed to the ground on a concrete slab (and sometimes attached to the sides of structures), tower cranes often give the best combination of height and lifting capacity and are used in the construction of tall buildings.
Is a national qualification certifying that a person is competent to be a TOWER CRANE OPERATOR. Before one is issued an NC III Certificate, a person needs to undergo a training to gain the competencies required, after which, such person is assessed according to TESDA standards.