CO Support Systems Contractor Exam
Practice Questions And Correct
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1. A Colorado contractor is installing a support system for mechanical
piping in a commercial building. Before selecting anchors and
support hardware, which factor is MOST important to verify?
A. The color of the finished ceiling
B. The structural capacity and composition of the supporting substrate
C. The manufacturer's preferred paint system
D. The number of workers assigned to the installation
Answer: B
Rationale: Support systems transfer imposed loads to the building
structure, so the contractor must verify the substrate type and its
structural capacity before selecting anchors or attachment methods.
2. Which of the following BEST describes the primary function of a
pipe hanger support system?
A. To increase fluid pressure inside the piping
B. To transfer piping loads safely to structural elements while maintaining
,required alignment
C. To eliminate the need for pipe expansion joints
D. To prevent all vibration in a mechanical system
Answer: B
Rationale: Pipe support systems carry dead, live, thermal, and
operational loads and transfer them safely to suitable structural
components while maintaining the piping in its intended position.
3. A contractor installs a hanger directly into a suspended ceiling grid
rather than an approved structural member. What is the PRIMARY
concern?
A. The grid may change color over time
B. The ceiling grid may not be designed to support the imposed piping
load
C. The piping will become more resistant to corrosion
D. The pipe insulation will become unnecessary
Answer: B
Rationale: Suspended ceiling systems generally are not structural
supports for piping or equipment unless specifically designed and
approved for those loads.
4. Which load is generally considered the permanent weight of pipe,
fittings, valves, insulation, and contained fluid under normal
operating conditions?
,A. Dead load
B. Wind load
C. Impact load
D. Seismic drift load
Answer: A
Rationale: Dead load consists of the sustained weight of permanently
installed components, including the piping assembly and, where
applicable, its normal contents.
5. Why must the weight of water be considered when designing
supports for a water-filled piping system?
A. Water reduces the strength of steel hangers
B. The piping may be substantially heavier when filled than when empty
C. Water eliminates thermal movement
D. Water prevents corrosion at attachment points
Answer: B
Rationale: The contained fluid can add significant weight to a piping
system, and supports must be capable of carrying the loaded operating
condition.
6. A support rod is subjected primarily to a straight pulling force
caused by the suspended load below it. This force is called:
A. Compression
B. Tension
, C. Torsion
D. Shear only
Answer: B
Rationale: A vertical hanger rod supporting a suspended load is
generally subjected primarily to tensile force.
7. Which condition is MOST likely to cause a hanger rod to fail by
buckling?
A. Excessive tensile loading
B. Excessive compressive loading on a slender member
C. Properly tightened threaded connections
D. Installation of a larger washer
Answer: B
Rationale: Slender structural members subjected to compression may
buckle before reaching their material's compressive strength.
8. What is the PRIMARY purpose of using a trapeze support for
multiple parallel pipes?
A. To eliminate all pipe insulation
B. To support several pipes from a common structural support
arrangement
C. To increase water velocity
D. To replace all expansion joints
Answer: B
Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2027 Q&A| Instant
Download Pdf.
1. A Colorado contractor is installing a support system for mechanical
piping in a commercial building. Before selecting anchors and
support hardware, which factor is MOST important to verify?
A. The color of the finished ceiling
B. The structural capacity and composition of the supporting substrate
C. The manufacturer's preferred paint system
D. The number of workers assigned to the installation
Answer: B
Rationale: Support systems transfer imposed loads to the building
structure, so the contractor must verify the substrate type and its
structural capacity before selecting anchors or attachment methods.
2. Which of the following BEST describes the primary function of a
pipe hanger support system?
A. To increase fluid pressure inside the piping
B. To transfer piping loads safely to structural elements while maintaining
,required alignment
C. To eliminate the need for pipe expansion joints
D. To prevent all vibration in a mechanical system
Answer: B
Rationale: Pipe support systems carry dead, live, thermal, and
operational loads and transfer them safely to suitable structural
components while maintaining the piping in its intended position.
3. A contractor installs a hanger directly into a suspended ceiling grid
rather than an approved structural member. What is the PRIMARY
concern?
A. The grid may change color over time
B. The ceiling grid may not be designed to support the imposed piping
load
C. The piping will become more resistant to corrosion
D. The pipe insulation will become unnecessary
Answer: B
Rationale: Suspended ceiling systems generally are not structural
supports for piping or equipment unless specifically designed and
approved for those loads.
4. Which load is generally considered the permanent weight of pipe,
fittings, valves, insulation, and contained fluid under normal
operating conditions?
,A. Dead load
B. Wind load
C. Impact load
D. Seismic drift load
Answer: A
Rationale: Dead load consists of the sustained weight of permanently
installed components, including the piping assembly and, where
applicable, its normal contents.
5. Why must the weight of water be considered when designing
supports for a water-filled piping system?
A. Water reduces the strength of steel hangers
B. The piping may be substantially heavier when filled than when empty
C. Water eliminates thermal movement
D. Water prevents corrosion at attachment points
Answer: B
Rationale: The contained fluid can add significant weight to a piping
system, and supports must be capable of carrying the loaded operating
condition.
6. A support rod is subjected primarily to a straight pulling force
caused by the suspended load below it. This force is called:
A. Compression
B. Tension
, C. Torsion
D. Shear only
Answer: B
Rationale: A vertical hanger rod supporting a suspended load is
generally subjected primarily to tensile force.
7. Which condition is MOST likely to cause a hanger rod to fail by
buckling?
A. Excessive tensile loading
B. Excessive compressive loading on a slender member
C. Properly tightened threaded connections
D. Installation of a larger washer
Answer: B
Rationale: Slender structural members subjected to compression may
buckle before reaching their material's compressive strength.
8. What is the PRIMARY purpose of using a trapeze support for
multiple parallel pipes?
A. To eliminate all pipe insulation
B. To support several pipes from a common structural support
arrangement
C. To increase water velocity
D. To replace all expansion joints
Answer: B
