OQ TRAINING EXAM QUESTIONS
AND ANSWERS
Shoring is mandatory for all excavations at what depth - ANSWER 5ft or more
What colour marking is used for gas - ANSWER Yellow
What color marking is used for electricity - ANSWER Red
What color marking is used for sewage - ANSWER Green
What color marking is used for water - ANSWER Blue
What color marking is used for the proposed excavation - ANSWER White
What color is used for a temporary survey - ANSWER Pink
What color is used for reclaimed grey water or radioactive lines - ANSWER
Purple slurry
A pneumatic tamper and pavement breaker tamping foot is needed for what size
lifts - ANSWER 6in
A vibratory plate compactor and percussive whacker rammer on what size lists -
ANSWER 6in-12in
Why must you be careful digging around plastic pipe? - ANSWER Because of
the tracing wire
What is used for marking out utilities - ANSWER 811
Proper compaction in each trench should be checked how often? - ANSWER
25ft
AND ANSWERS
Shoring is mandatory for all excavations at what depth - ANSWER 5ft or more
What colour marking is used for gas - ANSWER Yellow
What color marking is used for electricity - ANSWER Red
What color marking is used for sewage - ANSWER Green
What color marking is used for water - ANSWER Blue
What color marking is used for the proposed excavation - ANSWER White
What color is used for a temporary survey - ANSWER Pink
What color is used for reclaimed grey water or radioactive lines - ANSWER
Purple slurry
A pneumatic tamper and pavement breaker tamping foot is needed for what size
lifts - ANSWER 6in
A vibratory plate compactor and percussive whacker rammer on what size lists -
ANSWER 6in-12in
Why must you be careful digging around plastic pipe? - ANSWER Because of
the tracing wire
What is used for marking out utilities - ANSWER 811
Proper compaction in each trench should be checked how often? - ANSWER
25ft
