California Civil Seismic Principles Exam Newest
(2025 - 2026 Update) From Real Past Papers
Questions – Set 100 Most Common Exam
Frequently Tested Questions And Answers In
Details 100% Verified Exam Highly
Recommendable For Grade A+
1. The primary purpose of seismic design in buildings is to:
A. Prevent all structural damage during any earthquake
B. Eliminate all movement during earthquakes
C. Protect life safety by preventing collapse
D. Ensure no cosmetic damage occurs
Answer: C. Protect life safety by preventing collapse
Modern seismic design focuses primarily on protecting occupants by preventing
structural collapse during major earthquakes. Some damage is expected in strong
shaking.
2. Which type of seismic wave generally causes the greatest damage to
structures?
A. P-waves
B. Surface waves
C. Body waves
D. Compression waves
Answer: B. Surface waves
Surface waves typically produce the largest ground motions and are responsible
for much of the structural damage during earthquakes.
, 3. The epicenter of an earthquake is:
A. The point where fault rupture begins underground
B. The point directly above the focus on the Earth's surface
C. The deepest point of the fault
D. The strongest shaking location
Answer: B. The point directly above the focus on the Earth's surface
The focus (hypocenter) is underground, while the epicenter is located directly
above it at the surface.
4. The underground point where an earthquake originates is called the:
A. Epicenter
B. Fault plane
C. Hypocenter
D. Rift zone
Answer: C. Hypocenter
The hypocenter, also known as the focus, is the location where fault rupture
begins.
5. Which fault movement is characteristic of the San Andreas Fault?
A. Reverse slip
B. Normal slip
C. Strike-slip
D. Thrust slip
Answer: C. Strike-slip
The San Andreas Fault primarily experiences horizontal strike-slip movement.
6. Which plate boundary is most commonly associated with strike-slip faults?
A. Divergent
B. Convergent
C. Transform
D. Subduction
Answer: C. Transform
Transform boundaries involve plates sliding horizontally past each other.
, 7. Liquefaction occurs when:
A. Concrete melts during earthquakes
B. Saturated loose soils lose strength during shaking
C. Rock fractures permanently
D. Steel beams buckle
Answer: B. Saturated loose soils lose strength during shaking
Liquefaction reduces soil bearing capacity and may cause severe foundation
movement.
8. Which soil type generally amplifies seismic shaking the most?
A. Hard bedrock
B. Dense gravel
C. Soft clay
D. Massive granite
Answer: C. Soft clay
Soft soils tend to amplify earthquake ground motion more than competent rock.
9. Site Class A represents:
A. Soft clay
B. Hard rock
C. Loose sand
D. Artificial fill
Answer: B. Hard rock
Site Class A corresponds to hard rock conditions with minimal amplification.
10.Site Class D is generally associated with:
A. Hard rock
B. Average stiff soil
C. Very soft clay
D. Massive granite
Answer: B. Average stiff soil
Site Class D is one of the most common site classifications and represents stiff soil
conditions.
(2025 - 2026 Update) From Real Past Papers
Questions – Set 100 Most Common Exam
Frequently Tested Questions And Answers In
Details 100% Verified Exam Highly
Recommendable For Grade A+
1. The primary purpose of seismic design in buildings is to:
A. Prevent all structural damage during any earthquake
B. Eliminate all movement during earthquakes
C. Protect life safety by preventing collapse
D. Ensure no cosmetic damage occurs
Answer: C. Protect life safety by preventing collapse
Modern seismic design focuses primarily on protecting occupants by preventing
structural collapse during major earthquakes. Some damage is expected in strong
shaking.
2. Which type of seismic wave generally causes the greatest damage to
structures?
A. P-waves
B. Surface waves
C. Body waves
D. Compression waves
Answer: B. Surface waves
Surface waves typically produce the largest ground motions and are responsible
for much of the structural damage during earthquakes.
, 3. The epicenter of an earthquake is:
A. The point where fault rupture begins underground
B. The point directly above the focus on the Earth's surface
C. The deepest point of the fault
D. The strongest shaking location
Answer: B. The point directly above the focus on the Earth's surface
The focus (hypocenter) is underground, while the epicenter is located directly
above it at the surface.
4. The underground point where an earthquake originates is called the:
A. Epicenter
B. Fault plane
C. Hypocenter
D. Rift zone
Answer: C. Hypocenter
The hypocenter, also known as the focus, is the location where fault rupture
begins.
5. Which fault movement is characteristic of the San Andreas Fault?
A. Reverse slip
B. Normal slip
C. Strike-slip
D. Thrust slip
Answer: C. Strike-slip
The San Andreas Fault primarily experiences horizontal strike-slip movement.
6. Which plate boundary is most commonly associated with strike-slip faults?
A. Divergent
B. Convergent
C. Transform
D. Subduction
Answer: C. Transform
Transform boundaries involve plates sliding horizontally past each other.
, 7. Liquefaction occurs when:
A. Concrete melts during earthquakes
B. Saturated loose soils lose strength during shaking
C. Rock fractures permanently
D. Steel beams buckle
Answer: B. Saturated loose soils lose strength during shaking
Liquefaction reduces soil bearing capacity and may cause severe foundation
movement.
8. Which soil type generally amplifies seismic shaking the most?
A. Hard bedrock
B. Dense gravel
C. Soft clay
D. Massive granite
Answer: C. Soft clay
Soft soils tend to amplify earthquake ground motion more than competent rock.
9. Site Class A represents:
A. Soft clay
B. Hard rock
C. Loose sand
D. Artificial fill
Answer: B. Hard rock
Site Class A corresponds to hard rock conditions with minimal amplification.
10.Site Class D is generally associated with:
A. Hard rock
B. Average stiff soil
C. Very soft clay
D. Massive granite
Answer: B. Average stiff soil
Site Class D is one of the most common site classifications and represents stiff soil
conditions.
