ICC 93 Tall Mass Timber Buildings Exam
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A |
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1. Which material is most commonly used as the primary structural
element in tall mass timber buildings?
A. Light-frame lumber
B. Cross-laminated timber (CLT)
C. Oriented strand board
D. Plywood
CLT panels provide the required strength, stiffness, and fire
performance for tall mass timber construction.
2. What is the primary advantage of mass timber compared to
structural steel or concrete?
A. Higher density
B. Greater thermal conductivity
C. Reduced embodied carbon
D. Increased weight
Mass timber sequesters carbon and typically has lower embodied
energy than steel or concrete.
3. According to the IBC, tall mass timber buildings are classified into
which construction types?
, A. Types I and II
B. Types III and IV
C. Type IV-A, IV-B, and IV-C
D. Type V only
The IBC introduced new Type IV subcategories specifically for tall
mass timber.
4. Type IV-A construction requires what level of fire-resistance rating
for primary structural elements?
A. 1 hour
B. 2 hours
C. 3 hours
D. No rating required
Type IV-A is the most fire-resistive mass timber construction type.
5. What is the maximum building height permitted for Type IV-A
mass timber construction under the IBC?
A. 9 stories
B. 12 stories
C. 18 stories
D. Unlimited
Type IV-A allows the greatest height among mass timber
construction types.
6. Which fire protection system is mandatory for tall mass timber
buildings?
A. Standpipes only
B. Smoke control systems only
C. Automatic sprinkler system throughout
D. Fire pumps only
, Automatic sprinklers are required to mitigate fire risk in tall mass
timber structures.
7. Encapsulation of mass timber elements primarily serves what
purpose?
A. Structural reinforcement
B. Moisture resistance
C. Fire resistance
D. Acoustic insulation
Encapsulation delays charring and extends fire-resistance
performance.
8. What material is commonly used to encapsulate mass timber for
fire protection?
A. Plywood
B. Cement board
C. Gypsum board
D. Fiberboard
Gypsum board provides predictable fire-resistive performance.
9. What is the typical charring behavior of mass timber during a fire?
A. Sudden collapse
B. Melting
C. Predictable char layer formation
D. Explosive spalling
The char layer insulates the remaining wood, slowing fire spread.
10. Which structural property allows mass timber to perform
well under fire exposure?
A. High moisture content
B. Low thermal conductivity
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. Which material is most commonly used as the primary structural
element in tall mass timber buildings?
A. Light-frame lumber
B. Cross-laminated timber (CLT)
C. Oriented strand board
D. Plywood
CLT panels provide the required strength, stiffness, and fire
performance for tall mass timber construction.
2. What is the primary advantage of mass timber compared to
structural steel or concrete?
A. Higher density
B. Greater thermal conductivity
C. Reduced embodied carbon
D. Increased weight
Mass timber sequesters carbon and typically has lower embodied
energy than steel or concrete.
3. According to the IBC, tall mass timber buildings are classified into
which construction types?
, A. Types I and II
B. Types III and IV
C. Type IV-A, IV-B, and IV-C
D. Type V only
The IBC introduced new Type IV subcategories specifically for tall
mass timber.
4. Type IV-A construction requires what level of fire-resistance rating
for primary structural elements?
A. 1 hour
B. 2 hours
C. 3 hours
D. No rating required
Type IV-A is the most fire-resistive mass timber construction type.
5. What is the maximum building height permitted for Type IV-A
mass timber construction under the IBC?
A. 9 stories
B. 12 stories
C. 18 stories
D. Unlimited
Type IV-A allows the greatest height among mass timber
construction types.
6. Which fire protection system is mandatory for tall mass timber
buildings?
A. Standpipes only
B. Smoke control systems only
C. Automatic sprinkler system throughout
D. Fire pumps only
, Automatic sprinklers are required to mitigate fire risk in tall mass
timber structures.
7. Encapsulation of mass timber elements primarily serves what
purpose?
A. Structural reinforcement
B. Moisture resistance
C. Fire resistance
D. Acoustic insulation
Encapsulation delays charring and extends fire-resistance
performance.
8. What material is commonly used to encapsulate mass timber for
fire protection?
A. Plywood
B. Cement board
C. Gypsum board
D. Fiberboard
Gypsum board provides predictable fire-resistive performance.
9. What is the typical charring behavior of mass timber during a fire?
A. Sudden collapse
B. Melting
C. Predictable char layer formation
D. Explosive spalling
The char layer insulates the remaining wood, slowing fire spread.
10. Which structural property allows mass timber to perform
well under fire exposure?
A. High moisture content
B. Low thermal conductivity
