Name: 
 

OSP Construction - Underground Construction



True/False
Indicate whether the statement is true or false.
 

 1. 

Underground cables are pulled in conduit that is buried underground.
 

 2. 

“Dig Once” refers to the construction method where only one conduit is buried in each trench.
 

 3. 

Direct -buried cable should be armored to prevent crushing loads and rodent penetration.
 

 4. 

Armored cable with metallic armor must be grounded and bonded for safety.
 

 5. 

Robots have been used to install fiber optic cables in sewers and other underground pipes.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 6. 

If the conduit and cables are all dielectric, a __________ should be buried above the conduit to warn anyone digging in the vicinity of the cable and assist in future cable location.
a.
Bright colored nylon rope
b.
Paving stones
c.
Sand
d.
Conductive marking tape
 

 7. 

The most common cause of failure of underground cable systems is ________.
a.
Water ingress
b.
Lightning
c.
Dig ups or “backhoe fade”
d.
Bad splices
 

 8. 

Underground conduit is generally buried _________ under the surface of the ground.
a.
1 to 1.2 meter
b.
0.5 meter
c.
2 meters
d.
Only enough to cover with soil
 

 9. 

The preferred method of burying conduit on road or sidewalk crossing is _______.
a.
Sawing road sections out which can be replaced
b.
Directional drilling or boring
c.
Microtrenching
d.
Digging with a large backhoe
 

Multiple Response
Identify one or more choices that best complete the statement or answer the question.
 

 10. 

No excavation work should begin until ________.
 a.
The contractor has called “Call Before You Dig” services
 b.
Copies of easements for other utilites are obtained
 c.
Cable locators are used to confirm the presence of other services
 d.
Pilot holes are dug to position the trench
 



 
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