AR MB Metal Building Contractor Exam
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
Download Pdf
Section 1: Metal Building Fundamentals and Structural Components
1. What is the primary function of a rigid frame in a pre-engineered
metal building?
A. To provide decorative support for the exterior walls
B. To eliminate the need for foundation anchorage
C. To support building loads and transfer them safely to the
foundations
D. To prevent all movement caused by temperature changes
Rationale: A rigid frame is a primary structural system consisting of
columns and rafters connected to resist applied loads. It transfers roof,
,wind, and other structural forces through the frame and into the
foundations. Properly designed rigid frames provide structural stability
and help control deflection. They do not eliminate the need for
foundation anchorage or accommodate every movement without
consideration of connections and design.
2. Which component primarily supports the roof panels between the
main structural frames?
A. Anchor bolts
B. Wall girts
C. Purlins
D. Base plates
Rationale: Purlins are secondary structural members that span between
primary frames and support roof sheeting. They transfer roof loads to
the rafters or other primary structural members. Wall girts perform a
similar function for wall panels, while anchor bolts and base plates are
associated with connecting the building structure to its foundation.
3. What is the primary purpose of wall girts in a metal building?
A. To support the concrete foundation
B. To serve as the building's primary roof rafters
,C. To support wall panels and transfer wall loads to the main
structural frames
D. To replace all vertical columns
Rationale: Wall girts are horizontal secondary framing members
attached to the building's primary columns. They provide attachment
points for wall panels and help transfer wind and other wall loads to the
main frame. Their spacing and size must comply with the engineered
design, panel requirements, and applicable loading conditions.
4. What is the purpose of a base plate on a steel column?
A. To provide a surface for attaching roof insulation
B. To connect wall panels directly to the roof
C. To distribute column forces to the foundation through the designed
anchorage system
D. To eliminate the need for grout or concrete
Rationale: A base plate provides a bearing and connection interface
between a steel column and its supporting foundation. Depending on
the design, it transfers axial loads, shear forces, and moments through
bearing, anchor rods, and other specified components. Grout may be
required to provide uniform bearing beneath the plate. The base plate
does not eliminate the need for properly designed foundations.
, 5. What is the main function of an eave strut in a typical metal
building?
A. To support underground drainage pipes
B. To replace all roof purlins
C. To provide structural support and a transition connection at the
roof-to-wall eave
D. To serve as the building's primary foundation beam
Rationale: An eave strut is a structural member located along the eave,
where the roof meets the wall. It supports roof and wall system
components and provides attachment points for related framing and
cladding. Its specific structural role depends on the building design and
connection details.
6. Which drawing should a contractor primarily consult to determine
the specified dimensions and locations of primary structural frames?
A. Material safety data sheet
B. Paint manufacturer's brochure
C. Approved structural erection drawings
D. Equipment maintenance log
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
Download Pdf
Section 1: Metal Building Fundamentals and Structural Components
1. What is the primary function of a rigid frame in a pre-engineered
metal building?
A. To provide decorative support for the exterior walls
B. To eliminate the need for foundation anchorage
C. To support building loads and transfer them safely to the
foundations
D. To prevent all movement caused by temperature changes
Rationale: A rigid frame is a primary structural system consisting of
columns and rafters connected to resist applied loads. It transfers roof,
,wind, and other structural forces through the frame and into the
foundations. Properly designed rigid frames provide structural stability
and help control deflection. They do not eliminate the need for
foundation anchorage or accommodate every movement without
consideration of connections and design.
2. Which component primarily supports the roof panels between the
main structural frames?
A. Anchor bolts
B. Wall girts
C. Purlins
D. Base plates
Rationale: Purlins are secondary structural members that span between
primary frames and support roof sheeting. They transfer roof loads to
the rafters or other primary structural members. Wall girts perform a
similar function for wall panels, while anchor bolts and base plates are
associated with connecting the building structure to its foundation.
3. What is the primary purpose of wall girts in a metal building?
A. To support the concrete foundation
B. To serve as the building's primary roof rafters
,C. To support wall panels and transfer wall loads to the main
structural frames
D. To replace all vertical columns
Rationale: Wall girts are horizontal secondary framing members
attached to the building's primary columns. They provide attachment
points for wall panels and help transfer wind and other wall loads to the
main frame. Their spacing and size must comply with the engineered
design, panel requirements, and applicable loading conditions.
4. What is the purpose of a base plate on a steel column?
A. To provide a surface for attaching roof insulation
B. To connect wall panels directly to the roof
C. To distribute column forces to the foundation through the designed
anchorage system
D. To eliminate the need for grout or concrete
Rationale: A base plate provides a bearing and connection interface
between a steel column and its supporting foundation. Depending on
the design, it transfers axial loads, shear forces, and moments through
bearing, anchor rods, and other specified components. Grout may be
required to provide uniform bearing beneath the plate. The base plate
does not eliminate the need for properly designed foundations.
, 5. What is the main function of an eave strut in a typical metal
building?
A. To support underground drainage pipes
B. To replace all roof purlins
C. To provide structural support and a transition connection at the
roof-to-wall eave
D. To serve as the building's primary foundation beam
Rationale: An eave strut is a structural member located along the eave,
where the roof meets the wall. It supports roof and wall system
components and provides attachment points for related framing and
cladding. Its specific structural role depends on the building design and
connection details.
6. Which drawing should a contractor primarily consult to determine
the specified dimensions and locations of primary structural frames?
A. Material safety data sheet
B. Paint manufacturer's brochure
C. Approved structural erection drawings
D. Equipment maintenance log
