Page | 1
VIRGINIA HEAVY HIGHWAY BATCH 1
QUESTIONS WITH DETAILED VERIFIED
ANSWERS
What lay of cable is less likely to kink and is easier to handle Ans:
Regular Lay
What lay of cable has increased resistance to abrasion Ans: Lang lay
________ is down stream and _________ is upstream Ans:
Backpressure is down stream and backsiphon is upstream
What is used to prevent water from flowing back into a main Ans:
Backflow preventer
Rebar placement is typically what multiple of the thickness Ans: 3
This is used to slow the water speed and improve control Ans: Rip Rap
Ductile Iron is also referred to as Ans: Cast
Before excavating, what should be done about the unmarked utilities?
Ans: Contact notification center, marking by color, then dig
What is the minimum compacted soil around a communication line Ans:
12"
What is the minimum space utilized (width) of a 24" pipe in a ground
Ans: 12" + 24" + 12" = 48"
What is the minimum required burial distance from the top of a rail to an
underground conduit system? Ans: 5.5 feet
What is the minimum dimension of a circular manhole? Ans: 26"
What is the minimum size of a rectangular manhole lid? Ans:
26"xwhatever
VIRGINIA HEAVY HIGHWAY BATCH 1
QUESTIONS WITH DETAILED VERIFIED
ANSWERS
What lay of cable is less likely to kink and is easier to handle Ans:
Regular Lay
What lay of cable has increased resistance to abrasion Ans: Lang lay
________ is down stream and _________ is upstream Ans:
Backpressure is down stream and backsiphon is upstream
What is used to prevent water from flowing back into a main Ans:
Backflow preventer
Rebar placement is typically what multiple of the thickness Ans: 3
This is used to slow the water speed and improve control Ans: Rip Rap
Ductile Iron is also referred to as Ans: Cast
Before excavating, what should be done about the unmarked utilities?
Ans: Contact notification center, marking by color, then dig
What is the minimum compacted soil around a communication line Ans:
12"
What is the minimum space utilized (width) of a 24" pipe in a ground
Ans: 12" + 24" + 12" = 48"
What is the minimum required burial distance from the top of a rail to an
underground conduit system? Ans: 5.5 feet
What is the minimum dimension of a circular manhole? Ans: 26"
What is the minimum size of a rectangular manhole lid? Ans:
26"xwhatever