All trainees seeking Drilled Shaft Inspector qualification must:
1- Obtain on-site experience in which at least he/she has directly observed, inspected, and recorded the full installation of at least five (5) shafts using the wet method under the supervision of a CTQP qualified Drilled Shaft Inspector (DSI). 2- Pass the Drilled Shaft Inspection course written and proficiency examinations. The passing score of the written examination is 70%. The passing score of the proficiency exam is 100%.