updated
1. Shoring is
5ft or more
manda- tory for
all excava- tions
at what depth
2. What color marking Yellow
is used for gas
3. What color marking Red
is used for electric
4. What color marking Green
is used for sewage
5. What color marking Blue
is used for water
6. What color 9. A pneumatic tam- per and pavement
mark- ing is breaker tamping
used for pro-
posed
excavation
7. What color is
used for
temporary sur-
vey
8. What color is
used for
reclaimed gray
water or
radioac- tive
lines
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11
, OQ training (Questions with complete solutions) 2025
updated
White
Pink
Purple slurry
6in
2/
11