CA D-80 T-Bar Systems Contractor Exam
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
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1. What is the primary purpose of a T-bar ceiling suspension system?
A. To support exterior roofing materials
B. To provide a suspended framework for ceiling panels
C. To reinforce concrete foundations
D. To support plumbing underground
Answer: B. To provide a suspended framework for ceiling panels
Rationale: A T-bar suspension system creates a grid of main runners
and cross tees that supports acoustical ceiling panels. The system is
suspended from the structure above and provides a level, accessible
ceiling plane.
2. Which component is typically the main structural member of a
suspended T-bar grid?
,A. Cross tee
B. Wall angle
C. Main runner
D. Ceiling panel
Answer: C. Main runner
Rationale: Main runners, also called main tees, form the primary load-
carrying members of the grid. Cross tees connect to the main runners
to create the individual openings for ceiling panels.
3. What is the primary function of a cross tee?
A. To connect main runners and form panel openings
B. To anchor the ceiling to the roof deck
C. To provide electrical power
D. To replace suspension wires
Answer: A. To connect main runners and form panel openings
Rationale: Cross tees lock into the main runners at predetermined
intervals. Together, the main runners and cross tees form the modular
grid that receives ceiling panels.
4. What is commonly used to support a suspended T-bar grid from
the building structure?
,A. Drywall screws
B. Suspension wire
C. Roofing nails
D. Plastic trim
Answer: B. Suspension wire
Rationale: Suspension wires transfer the load of the ceiling system to
the overhead structure. They must be properly attached, spaced, and
installed according to the applicable requirements and manufacturer's
instructions.
5. Before installing a suspended ceiling, what should the contractor
establish first?
A. The location of ceiling panels only
B. The finished ceiling elevation
C. The color of the walls
D. The furniture layout
Answer: B. The finished ceiling elevation
Rationale: Establishing the finished ceiling elevation provides a
reference for installing wall angles, suspension wires, main runners,
and cross tees. Accurate elevation is essential for producing a level
and properly aligned ceiling.
, 6. Which tool is especially useful for establishing a consistent ceiling
elevation over a large room?
A. Concrete vibrator
B. Laser level
C. Pipe wrench
D. Reciprocating saw
Answer: B. Laser level
Rationale: A laser level can project a consistent reference line around
a room or work area. This helps installers establish the elevation for
wall angles and maintain a level ceiling grid.
7. What is the primary purpose of the perimeter wall angle?
A. To support the building roof
B. To provide a perimeter support and visual edge for the ceiling grid
C. To carry electrical wiring
D. To replace main runners
Answer: B. To provide a perimeter support and visual edge for the
ceiling grid
Rationale: Wall angle is installed around the perimeter of the ceiling
area. It establishes the finished edge of the grid and provides support
for grid components at the walls.
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf
1. What is the primary purpose of a T-bar ceiling suspension system?
A. To support exterior roofing materials
B. To provide a suspended framework for ceiling panels
C. To reinforce concrete foundations
D. To support plumbing underground
Answer: B. To provide a suspended framework for ceiling panels
Rationale: A T-bar suspension system creates a grid of main runners
and cross tees that supports acoustical ceiling panels. The system is
suspended from the structure above and provides a level, accessible
ceiling plane.
2. Which component is typically the main structural member of a
suspended T-bar grid?
,A. Cross tee
B. Wall angle
C. Main runner
D. Ceiling panel
Answer: C. Main runner
Rationale: Main runners, also called main tees, form the primary load-
carrying members of the grid. Cross tees connect to the main runners
to create the individual openings for ceiling panels.
3. What is the primary function of a cross tee?
A. To connect main runners and form panel openings
B. To anchor the ceiling to the roof deck
C. To provide electrical power
D. To replace suspension wires
Answer: A. To connect main runners and form panel openings
Rationale: Cross tees lock into the main runners at predetermined
intervals. Together, the main runners and cross tees form the modular
grid that receives ceiling panels.
4. What is commonly used to support a suspended T-bar grid from
the building structure?
,A. Drywall screws
B. Suspension wire
C. Roofing nails
D. Plastic trim
Answer: B. Suspension wire
Rationale: Suspension wires transfer the load of the ceiling system to
the overhead structure. They must be properly attached, spaced, and
installed according to the applicable requirements and manufacturer's
instructions.
5. Before installing a suspended ceiling, what should the contractor
establish first?
A. The location of ceiling panels only
B. The finished ceiling elevation
C. The color of the walls
D. The furniture layout
Answer: B. The finished ceiling elevation
Rationale: Establishing the finished ceiling elevation provides a
reference for installing wall angles, suspension wires, main runners,
and cross tees. Accurate elevation is essential for producing a level
and properly aligned ceiling.
, 6. Which tool is especially useful for establishing a consistent ceiling
elevation over a large room?
A. Concrete vibrator
B. Laser level
C. Pipe wrench
D. Reciprocating saw
Answer: B. Laser level
Rationale: A laser level can project a consistent reference line around
a room or work area. This helps installers establish the elevation for
wall angles and maintain a level ceiling grid.
7. What is the primary purpose of the perimeter wall angle?
A. To support the building roof
B. To provide a perimeter support and visual edge for the ceiling grid
C. To carry electrical wiring
D. To replace main runners
Answer: B. To provide a perimeter support and visual edge for the
ceiling grid
Rationale: Wall angle is installed around the perimeter of the ceiling
area. It establishes the finished edge of the grid and provides support
for grid components at the walls.
