A8 Flashcards
Which of the following is NOT an advantage of PCCP?
A. Ease of installation
B. High maintenance costs
C. Superior corrosion resistance
D. Custom-designed fittings
High maintenance costs
What is the purpose of a spigot ring in a Prestressed Concrete Cylinder Pipe (PCCP) joint?
A. To retain the O-ring gasket
B. To hold cement grout
C. To align fittings
D. To prevent corrosion
To hold cement grout
The long-term, steady-state internal pressure of a pipeline is referred to as:
A. Field test pressure
B. Transient pressure
C. Working pressure
D. External live load
Working pressure
Which type of external load is typically constant, such as earth weight?
A. External live load
B. External dead load
C. Working load
D. Transient load
External dead load
What material is used to coat the prestressing wire in Prestressed Concrete Cylinder Pipe (PCCP)?
A. Epoxy
B. Portland cement-rich mortar
C. Rubber
D. Steel mesh
Portland cement-rich mortar
Prestressed Concrete Cylinder Pipe (PCCP) fittings are manufactured from:
A. Plastic molds
B. Cast iron
C. Steel plate
D. Ceramic components
Steel plate
The Hazen-Williams formula is used to calculate:
A. Material strength
B. Corrosion resistance
C. Flow velocity
D. Pipe diameter
Flow velocity
Energy use in pipeline operation can be reduced by minimizing:
A. Pipe length
B. Head losses due to pipe wall friction
C. Pipe diameter
D. Coating thickness
Head losses due to pipe wall friction
Head losses in fittings are expressed using which formula?
A. hₛ = Cₛ * V^2
B. hₛ = Cₛ * (V^2/2g)
C. hₛ = V / d
D. hₛ = L / d
hₛ = Cₛ * (V^2/2g)
Which of the following is NOT a step in the Prestressed Concrete Cylinder Pipe (PCCP) manufacturing process?
A. Curing concrete
B. Applying prestressing wire
C. Painting with epoxy
D. Hydrostatic testing of cylinder assembly
Painting with epoxy
During storage, rubber gaskets should be kept:
A. In direct sunlight
B. Near fuel oil
C. In a cool, shaded place
D. Frozen in ice
In a cool, shaded place
Field hydrostatic tests verify:
A. Pipe alignment
B. Overall system integrity and water tightness
C. Soil composition
D. Coating thickness
Overall system integrity and water tightness
What is the minimum recommended test pressure for postconstruction hydrostatic testing, as per AWWA C304?
A. Equal to working pressure
B. 1.2 times the working pressure
C. 2 times the working pressure
D. 0.8 times the working pressure
1.2 times the working pressure
Subaqueous joints are designed for:
A. High-temperature environments
B. Underground pipelines
C. Underwater installations
D. Heavy traffic areas
Underwater installations
Which condition does NOT typically require supplemental protective measures for Prestressed Concrete Cylinder Pipe (PCCP)?
A. High chloride environment
B. Stray current interference
C. Atmospheric exposure
D. Low temperature environments
Low temperature environments
Special Prestressed Concrete Cylinder Pipe (PCCP) installations may require pier supports for:
A. Corrosion resistance
B. Unstable soil conditions or small river crossings
C. High-pressure systems
D. High-temperature conditions
Unstable soil conditions or small river crossings
Which factor is most critical when designing Prestressed Concrete Cylinder Pipe (PCCP) for areas with heavy vehicular traffic?
A. External live load
B. Internal working pressure
C. Transient pressure
D. Pipe diameter
External live load
What additional protective measure may be required for Prestressed Concrete Cylinder Pipe (PCCP) in a high sulfate environment?
A. Increased wall thickness
B. Supplemental coatings or linings
C. Larger pipe diameters
D. Deeper burial depth
Supplemental coatings or linings
Which material is typically used for fittings’ internal and external coatings to prevent corrosion?
A. Epoxy
B. Portland cement mortar
C. Polyethylene
D. Zinc alloy
Portland cement mortar
Which type of load considers factors such as motor vehicles or construction equipment above the pipeline?
A. External dead load
B. Transient pressure
C. External live load
D. Working pressure
External live load
What is the primary purpose of hydrostatic testing during Prestressed Concrete Cylinder Pipe (PCCP) installation?
A. To measure water quality
B. To confirm structural integrity and water tightness
C. To assess soil compatibility
D. To test for chemical resistance
To confirm structural integrity and water tightness
Which environmental factor may lead to the need for supplemental cathodic protection in Prestressed Concrete Cylinder Pipe (PCCP)?
A. High levels of nitrogen
B. High chloride content
C. Low temperatures
D. High pH levels
High chloride content
What type of joint is typically used to maintain axial tensile forces in Prestressed Concrete Cylinder Pipe (PCCP)?
A. Snap Ring joint
B. Bell and spigot joint
C. Flanged joint
D. Subaqueous joint
Snap Ring joint
What is the recommended method for handling Prestressed Concrete Cylinder Pipe (PCCP) during unloading?
A. Using a steel cable sling
B. Employing a fabric sling to prevent damage
C. Rolling the pipe manually
D. Storing pipes upright immediately
Employing a fabric sling to prevent damage
