ICC 93 Tall Mass Timber Buildings Exam QUESTIONS AND CORRECT ANSWERS WITH
RATIONALES
Exam Coverage
• ICC Exam 93 structure and prerequisites
• Mass timber materials and systems
• CLT and glulam fundamentals
• Structural connections
• Load paths and installation
• Fire-resistance concepts
• Charring and protection
• Moisture and environmental protection
• Approved plans and field inspection
• Special inspection documentation and nonconformance
1. After reviewing the applicable requirements and basic principles, Which statement most
accurately describes a char layer can insulate underlying wood during a fire?
A) A char layer can insulate underlying wood during a fire.
B) It applies only when the equipment is completely disconnected from all energy sources.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
,Correct Answer: A
Rationale: This is correct because Char has lower thermal conductivity than uncharred wood and
can slow heat penetration. The key point is that the stated principle directly governs the situation
described.
2. In a situation where accuracy and safety are both important, A supervisor asks for the
technically correct description. Which response best states glulam is manufactured by bonding
layers of lumber with their grain generally aligned?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) Glulam is manufactured by bonding layers of lumber with their grain generally aligned.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
Correct Answer: B
Rationale: The selected answer is appropriate because Glued-laminated timber forms structural
beams and columns by bonding laminations together. That principle is the controlling idea needed
to evaluate the scenario.
3. In a situation where accuracy and safety are both important, A supervisor asks for the
technically correct description. Which response best states temporary construction conditions can
affect mass timber stability before the final system is complete?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) It is primarily a documentation preference and does not affect the technical result.
,C) Temporary construction conditions can affect mass timber stability before the final system is
complete.
D) It is a procedure used only after the task has already been completed and inspected.
Correct Answer: C
Rationale: The selected answer is appropriate because Bracing, sequencing, weather exposure,
and partially completed connections can influence temporary stability. That principle is the
controlling idea needed to evaluate the scenario.
4. When deciding which statement is technically defensible, Which option demonstrates correct
understanding of a char layer can insulate underlying wood during a fire?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) It is primarily a documentation preference and does not affect the technical result.
C) It is a procedure used only after the task has already been completed and inspected.
D) A char layer can insulate underlying wood during a fire.
Correct Answer: D
Rationale: The defining feature is that Char has lower thermal conductivity than uncharred wood
and can slow heat penetration. This makes the selected response more technically accurate than
the alternatives.
5. When deciding which statement is technically defensible, Which option demonstrates correct
understanding of inspection competence includes understanding the relevant code provisions and
referenced standards?
, A) Inspection competence includes understanding the relevant code provisions and referenced
standards.
B) It applies only when the equipment is completely disconnected from all energy sources.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
Correct Answer: A
Rationale: The defining feature is that Special inspection depends on applying the governing code
and referenced standards to field conditions. This makes the selected response more technically
accurate than the alternatives.
6. While interpreting the governing technical concept, Which explanation most directly reflects the
standard principle represented by adhesive performance can be relevant to engineered wood
product quality?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) Adhesive performance can be relevant to engineered wood product quality.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
Correct Answer: B
Rationale: The rationale centers on the fact that Engineered wood products depend on
manufacturing processes and bond performance consistent with their specifications.
Understanding this mechanism helps with both examination questions and practical decisions.
RATIONALES
Exam Coverage
• ICC Exam 93 structure and prerequisites
• Mass timber materials and systems
• CLT and glulam fundamentals
• Structural connections
• Load paths and installation
• Fire-resistance concepts
• Charring and protection
• Moisture and environmental protection
• Approved plans and field inspection
• Special inspection documentation and nonconformance
1. After reviewing the applicable requirements and basic principles, Which statement most
accurately describes a char layer can insulate underlying wood during a fire?
A) A char layer can insulate underlying wood during a fire.
B) It applies only when the equipment is completely disconnected from all energy sources.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
,Correct Answer: A
Rationale: This is correct because Char has lower thermal conductivity than uncharred wood and
can slow heat penetration. The key point is that the stated principle directly governs the situation
described.
2. In a situation where accuracy and safety are both important, A supervisor asks for the
technically correct description. Which response best states glulam is manufactured by bonding
layers of lumber with their grain generally aligned?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) Glulam is manufactured by bonding layers of lumber with their grain generally aligned.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
Correct Answer: B
Rationale: The selected answer is appropriate because Glued-laminated timber forms structural
beams and columns by bonding laminations together. That principle is the controlling idea needed
to evaluate the scenario.
3. In a situation where accuracy and safety are both important, A supervisor asks for the
technically correct description. Which response best states temporary construction conditions can
affect mass timber stability before the final system is complete?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) It is primarily a documentation preference and does not affect the technical result.
,C) Temporary construction conditions can affect mass timber stability before the final system is
complete.
D) It is a procedure used only after the task has already been completed and inspected.
Correct Answer: C
Rationale: The selected answer is appropriate because Bracing, sequencing, weather exposure,
and partially completed connections can influence temporary stability. That principle is the
controlling idea needed to evaluate the scenario.
4. When deciding which statement is technically defensible, Which option demonstrates correct
understanding of a char layer can insulate underlying wood during a fire?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) It is primarily a documentation preference and does not affect the technical result.
C) It is a procedure used only after the task has already been completed and inspected.
D) A char layer can insulate underlying wood during a fire.
Correct Answer: D
Rationale: The defining feature is that Char has lower thermal conductivity than uncharred wood
and can slow heat penetration. This makes the selected response more technically accurate than
the alternatives.
5. When deciding which statement is technically defensible, Which option demonstrates correct
understanding of inspection competence includes understanding the relevant code provisions and
referenced standards?
, A) Inspection competence includes understanding the relevant code provisions and referenced
standards.
B) It applies only when the equipment is completely disconnected from all energy sources.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
Correct Answer: A
Rationale: The defining feature is that Special inspection depends on applying the governing code
and referenced standards to field conditions. This makes the selected response more technically
accurate than the alternatives.
6. While interpreting the governing technical concept, Which explanation most directly reflects the
standard principle represented by adhesive performance can be relevant to engineered wood
product quality?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) Adhesive performance can be relevant to engineered wood product quality.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
Correct Answer: B
Rationale: The rationale centers on the fact that Engineered wood products depend on
manufacturing processes and bond performance consistent with their specifications.
Understanding this mechanism helps with both examination questions and practical decisions.
