CO Prefabricated Building Installer
Exam Questions And Correct Answers
(Verified Answers) Plus Rationale2026
Q&A| Instant Download Pdf
1. What is the primary advantage of prefabricated building components?
A. Lower structural integrity
B. Reduced on-site construction time
C. Increased labor requirements
D. Need for more specialized tools
Reduced on-site time is a core benefit of prefabrication, improving
efficiency and lowering cost.
2. Which of the following is a critical first step before installing
prefabricated wall panels?
A. Painting the subfloor
B. Verifying foundation levelness
C. Installing interior finishes
D. Connecting electrical outlets
A level foundation ensures accurate alignment and structural stability.
3. What tool is most commonly used to position heavy modular sections?
A. Saw
B. Wrench
C. Crane
D. Hammer
Cranes lift and place large prefabricated modules safely and precisely.
,4. Which material is commonly used in prefabricated framing systems?
A. Glass
B. Light-gauge steel
C. Asphalt
D. Copper
Light-gauge steel is strong, lightweight, and ideal for prefabricated
framing.
5. The connection of prefabricated building modules is typically secured
using:
A. Glue
B. Tape
C. Bolts and fasteners
D. Mortar
Modules require structural fasteners to safely transfer loads.
6. What is the primary purpose of expansion joints in prefab
construction?
A. Add decoration
B. Allow movement due to temperature changes
C. Reduce insulation
D. Increase rigidity
Expansion joints prevent cracking by allowing controlled movement.
7. Electrical rough-in for prefabricated units is generally:
A. Done fully on site
B. Completed in the factory
C. Performed by crane operators
D. Not required
Prefabrication often includes factory-installed wiring to reduce field labor.
8. Before offloading prefabricated sections, the installer must:
A. Remove all workers from the site
B. Inspect lifting straps and rigging
, C. Pour concrete
D. Disconnect utilities
Rigging inspection ensures safety when moving heavy components.
9. Which code governs modular building installations in many U.S.
jurisdictions?
A. Farm Code
B. Highway Code
C. International Building Code (IBC)
D. Aviation Code
The IBC provides structural and safety requirements for modular
buildings.
10. A key characteristic of structural insulated panels (SIPs) is:
A. Lack of insulation
B. Fragility
C. High thermal efficiency
D. Steel-only construction
SIPs combine structure and insulation for excellent efficiency.
11. When aligning modules, installers commonly use:
A. Caulk
B. Laser levels
C. Paint
D. Duct tape
Laser levels ensure precise horizontal and vertical alignment.
12. What helps prevent moisture intrusion between prefab wall
connections?
A. Sand
B. Flashing and sealants
C. Aluminum foil
D. Carpet
Flashing and sealants protect joints from water penetration.
Exam Questions And Correct Answers
(Verified Answers) Plus Rationale2026
Q&A| Instant Download Pdf
1. What is the primary advantage of prefabricated building components?
A. Lower structural integrity
B. Reduced on-site construction time
C. Increased labor requirements
D. Need for more specialized tools
Reduced on-site time is a core benefit of prefabrication, improving
efficiency and lowering cost.
2. Which of the following is a critical first step before installing
prefabricated wall panels?
A. Painting the subfloor
B. Verifying foundation levelness
C. Installing interior finishes
D. Connecting electrical outlets
A level foundation ensures accurate alignment and structural stability.
3. What tool is most commonly used to position heavy modular sections?
A. Saw
B. Wrench
C. Crane
D. Hammer
Cranes lift and place large prefabricated modules safely and precisely.
,4. Which material is commonly used in prefabricated framing systems?
A. Glass
B. Light-gauge steel
C. Asphalt
D. Copper
Light-gauge steel is strong, lightweight, and ideal for prefabricated
framing.
5. The connection of prefabricated building modules is typically secured
using:
A. Glue
B. Tape
C. Bolts and fasteners
D. Mortar
Modules require structural fasteners to safely transfer loads.
6. What is the primary purpose of expansion joints in prefab
construction?
A. Add decoration
B. Allow movement due to temperature changes
C. Reduce insulation
D. Increase rigidity
Expansion joints prevent cracking by allowing controlled movement.
7. Electrical rough-in for prefabricated units is generally:
A. Done fully on site
B. Completed in the factory
C. Performed by crane operators
D. Not required
Prefabrication often includes factory-installed wiring to reduce field labor.
8. Before offloading prefabricated sections, the installer must:
A. Remove all workers from the site
B. Inspect lifting straps and rigging
, C. Pour concrete
D. Disconnect utilities
Rigging inspection ensures safety when moving heavy components.
9. Which code governs modular building installations in many U.S.
jurisdictions?
A. Farm Code
B. Highway Code
C. International Building Code (IBC)
D. Aviation Code
The IBC provides structural and safety requirements for modular
buildings.
10. A key characteristic of structural insulated panels (SIPs) is:
A. Lack of insulation
B. Fragility
C. High thermal efficiency
D. Steel-only construction
SIPs combine structure and insulation for excellent efficiency.
11. When aligning modules, installers commonly use:
A. Caulk
B. Laser levels
C. Paint
D. Duct tape
Laser levels ensure precise horizontal and vertical alignment.
12. What helps prevent moisture intrusion between prefab wall
connections?
A. Sand
B. Flashing and sealants
C. Aluminum foil
D. Carpet
Flashing and sealants protect joints from water penetration.
