100+ Free CA Seismic Practice Questions

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Question 1

Score: 0/0

Which California fault is the most prominent example of a transform (strike-slip) fault?

San Andreas Fault

Cascadia Subduction Zone

Sierra Madre Fault

Hayward Fault thrust segment

to track

2026 Statistics

Key Facts: CA Seismic Exam

Exam Questions

BPELSG

2.5 hrs

Exam Time

BPELSG

$125

Exam Fee

BPELSG 2026

Scaled

Passing Score

BPELSG

Content Areas

BPELSG Test Plan

CA only

Jurisdiction

BPELSG

California requires every civil PE applicant to pass two state-specific exams — Engineering Surveying and Seismic Principles — in addition to the NCEES PE Civil. The Seismic Principles exam is 55 multiple-choice questions over 2.5 hours, delivered by Pearson VUE and graded on a scaled basis. The 2026 BPELSG fee is $125 per 16 CCR §407. The exam is keyed to the current California Building Code (2022 CBC, IBC 2021 base) and ASCE/SEI 7-16/22, and emphasizes Building Forces (26%) and Analysis Procedures (26%) for over half of the test plan.

Sample CA Seismic Practice Questions

Try these sample questions to test your CA Seismic exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which California fault is the most prominent example of a transform (strike-slip) fault?

A.San Andreas Fault

B.Cascadia Subduction Zone

C.Sierra Madre Fault

D.Hayward Fault thrust segment

Explanation: The San Andreas Fault is California's defining strike-slip transform boundary, where the Pacific Plate moves laterally past the North American Plate. Strike-slip faults produce horizontal offset rather than vertical displacement. Designers must account for near-fault directivity and pulse-like ground motion close to the fault trace.

2Which magnitude scale is most commonly used by seismologists today for large earthquakes because it does not saturate at high magnitudes?

A.Modified Mercalli Intensity (MMI)

B.Local Richter magnitude (ML)

C.Moment magnitude (Mw)

D.Body-wave magnitude (mb)

Explanation: Moment magnitude (Mw) is based on the seismic moment M0 = μ·A·D, which directly captures the energy released by fault rupture and does not saturate for great earthquakes. It is the standard reported magnitude for events larger than about M6. Other scales saturate or measure only a portion of the wavefield.

3What does the Modified Mercalli Intensity (MMI) scale measure?

A.Energy released by fault rupture

B.Observed shaking effects at a specific location

C.Peak ground acceleration in g

D.Spectral acceleration at 1 second period

Explanation: MMI is an intensity scale that describes observed effects (perceived shaking, building damage) at a specific site using Roman numerals I to XII. Intensity decreases with distance from the source even for the same magnitude event. It is a qualitative description of impact, not a measure of source energy.

4USGS National Seismic Hazard Maps used in ASCE 7 design are most commonly expressed in terms of which probability of exceedance?

A.10% probability of exceedance in 50 years

B.2% probability of exceedance in 50 years (MCE)

C.50% probability of exceedance in 30 years

D.1% probability of exceedance in 100 years

Explanation: ASCE 7 design seismic motions are derived from the Risk-Targeted Maximum Considered Earthquake (MCE_R), which corresponds approximately to a 2% probability of exceedance in 50 years (about a 2,475-year return period). Design values Sds and Sd1 are taken as two-thirds of the MCE_R spectral accelerations.

5In ASCE 7, the design spectral response acceleration parameters Sds and Sd1 are computed as which fraction of the corresponding MCE values?

A.1.0 times Sms and Sm1

B.Two-thirds (2/3) of Sms and Sm1

C.One-half (1/2) of Sms and Sm1

D.Three-quarters (3/4) of Sms and Sm1

Explanation: ASCE 7 sets Sds = (2/3)·Sms and Sd1 = (2/3)·Sm1, where Sms and Sm1 are the site-modified MCE_R short-period and 1-second spectral accelerations. The 2/3 factor is intended to represent design-level shaking with margin against collapse at the MCE level.

6Which Risk Category in ASCE 7 includes hospitals, fire stations, and other essential facilities?

A.Risk Category I

B.Risk Category II

C.Risk Category III

D.Risk Category IV

Explanation: Risk Category IV covers essential facilities — hospitals, emergency operations centers, fire and police stations, and other buildings whose function must be maintained after an earthquake. Risk Category IV uses an importance factor Ie = 1.5, increasing design forces and tightening drift limits.

7How is the Seismic Design Category (SDC) primarily determined in ASCE 7?

A.By Risk Category alone

B.By the larger SDC from Sds-based and Sd1-based tables, considering Risk Category

C.By PGA only

D.By the geotechnical engineer's judgment

Explanation: ASCE 7 assigns SDC using two tables — one based on Sds and one based on Sd1 — for the building's Risk Category, and the more severe (higher) SDC governs. Buildings on Site Class E or F or where S1 exceeds 0.75 may also be forced into SDC E or F. SDC drives required detailing, analysis procedures, and height limits.

8A reverse fault produces what kind of relative motion across the fault plane?

A.Horizontal lateral slip with no vertical component

B.Hanging wall moves up relative to the footwall (compression)

C.Hanging wall moves down relative to the footwall (extension)

D.Pure rotational motion about the fault tip

Explanation: A reverse fault is a dip-slip fault driven by compressive tectonic stress in which the hanging wall is pushed up relative to the footwall. Thrust faults are reverse faults with shallow dip angles. Major California examples include the Sierra Madre and the Northridge blind thrust.

9Peak ground acceleration (PGA) at a site is best described as:

A.The maximum spectral response of a single-degree-of-freedom oscillator at long period

B.The largest absolute acceleration recorded in the free-field ground motion time history

C.The product of damping ratio and structural period

D.The mean acceleration over the full duration of shaking

Explanation: PGA is the largest absolute amplitude on the recorded free-field acceleration time history. It corresponds physically to the spectral acceleration of an infinitely stiff oscillator (T → 0). PGA characterizes high-frequency content but does not by itself describe damage potential to longer-period structures.

10Spectral acceleration Sa(T) plotted against period T (a response spectrum) represents:

A.The peak response of single-degree-of-freedom oscillators of different periods to the same ground motion

B.The Fourier amplitude spectrum of the ground motion

C.The frequency content of the structure's vibrations only

D.The time history of base acceleration

Explanation: A response spectrum is constructed by exposing many SDOF oscillators of varying period (each with a chosen damping, typically 5%) to the same ground motion and recording each one's peak response. The spectrum thus shows how structures of different periods respond, which is why it is the basis of code design loads.

About the CA Seismic Exam

The California Civil Engineering: Seismic Principles examination is one of two state-specific exams that every California civil PE applicant must pass in addition to the NCEES PE Civil. It is a 55-question, 2.5-hour computer-based test delivered at Pearson VUE test centers and administered by the Board for Professional Engineers, Land Surveyors, and Geologists (BPELSG). The exam covers seven content areas drawn from the BPELSG Seismic Principles Test Plan: seismic data and design criteria, characteristics of engineered systems, seismic vulnerability and improvement, seismic forces on building structures, forces on non-building structures and components, seismic analysis procedures, and seismic detailing and construction quality control. Topics include the ASCE 7 Equivalent Lateral Force procedure (V = Cs·W), modal response spectrum analysis, NEHRP site classification, Risk Categories, drift limits, redundancy and over-strength factors, and California-specific provisions for hospitals (OSHPD/HCAi) and public schools (DSA).

Questions

55 scored questions

Time Limit

2.5 hours

Passing Score

Scaled (BPELSG)

Exam Fee

$125 (California BPELSG (Pearson VUE))

CA Seismic Exam Content Outline

Seismic Data and Seismic Design Criteria

Fault types (strike-slip, normal, reverse), magnitude scales (Mw moment, ML Richter, MMI intensity), USGS seismic hazard maps, design spectral accelerations Sds and Sd1, Risk Category I-IV, and Seismic Design Categories A-F.

Seismic Characteristics of Engineered Systems

Peak ground acceleration (PGA), spectral acceleration response spectra, NEHRP site classes A-F, soil amplification, near-fault directivity, response modification coefficient R, deflection amplifier Cd, and over-strength factor Omega-0.

Seismic Vulnerability and Improvement

Soft-story buildings, unreinforced masonry (URM) retrofit ordinances, ATC-20/ATC-45 post-earthquake evaluation tagging, ASCE 41-17 Tier 1/2/3 evaluation, and FEMA P-58 performance-based assessment.

26%

Seismic Forces — Building Structures

ASCE 7 Equivalent Lateral Force procedure: base shear V = Cs·W, Cs limits, period T = Cu·Ta with Ta = Ct·hn^x, vertical distribution Fx with k, diaphragm forces Fpx, redundancy factor rho, story drift Delta and allowable drift Delta_a, vertical and torsional irregularities.

14%

Seismic Forces — Non-Building Structures and Components

ASCE 7 Chapter 13 component force Fp = (0.4·ap·SDS·Wp/(Rp/Ip))·(1+2z/h), Chapter 15 non-building structures (chimneys, tanks, towers), parapets, suspended ceilings, equipment anchorage, and rigid versus flexible component classification.

26%

Seismic Analysis Procedures

Modal response spectrum analysis (MRSA), nonlinear response history analysis, capacity design and plastic hinging, P-Delta effects, story shear distribution by rigidity, accidental and inherent torsion, chord/collector/drag forces, and load combinations with Ev = 0.2·SDS·D.

12%

Seismic Detailing and Quality Control

Special moment frames (SMF), special concentrically braced frames (SCBF), special structural walls and boundary elements (ACI 318 Chapter 18), wood shear walls, OSHPD/HCAi for California hospitals, DSA for public schools, and CBC Chapter 17 special inspection.

How to Pass the CA Seismic Exam

What You Need to Know

Passing score: Scaled (BPELSG)
Exam length: 55 questions
Time limit: 2.5 hours
Exam fee: $125

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

CA Seismic Study Tips from Top Performers

1Allocate study time by BPELSG weighting — Building Forces (26%) and Analysis Procedures (26%) are 52% of the exam, so build the deepest fluency there.

2Master the ASCE 7 base-shear chain end to end: SDS and SD1 from mapped Ss, S1 and site coefficients Fa, Fv; then Cs, V = Cs·W, Ta = Ct·hn^x, T = Cu·Ta.

3Memorize Risk Category I-IV and importance factor Ie, and how SDC is set jointly by SDS, SD1, and Risk Category.

4Drill vertical force distribution Fx with the period-dependent exponent k (1 for T ≤ 0.5 s, 2 for T ≥ 2.5 s, linear interpolation in between).

5Practice diaphragm force Fpx including the 0.2·SDS·Ie·wpx lower bound and 0.4·SDS·Ie·wpx upper bound, plus chord and collector forces with Omega-0.

6Know the Chapter 13 component force formula Fp = (0.4·ap·SDS·Wp/(Rp/Ip))·(1+2z/h) and its 0.3·SDS·Ip·Wp lower / 1.6·SDS·Ip·Wp upper bounds.

7Memorize allowable story drift Delta_a from ASCE 7 Table 12.12-1 by structure type and Risk Category, and how Cd amplifies elastic drift.

8Study horizontal irregularities (torsional, re-entrant corner, diaphragm discontinuity) and vertical irregularities (soft-story, weak-story, mass, geometric) and the analysis penalties each triggers.

9Review California-specific seismic provisions: OSHPD/HCAi for hospitals, DSA for public schools, the URM Law, and local soft-story retrofit ordinances (San Francisco, Los Angeles).

10Take full 2.5-hour timed practice sets and track your accuracy by content area; expand effort where your weighted accuracy is lowest.

Frequently Asked Questions

Do all California civil PE applicants need to pass the Seismic Principles exam?

Yes. Every applicant for civil engineering licensure in California must pass two state-specific exams in addition to the NCEES PE Civil — the Seismic Principles exam and the Engineering Surveying exam. There are no broad waivers; out-of-state PEs seeking comity generally still take both state exams unless BPELSG grants a specific exemption.

What is the format and length of the California Seismic Principles exam?

The exam is a 55-question, 2.5-hour computer-based multiple-choice test delivered at Pearson VUE test centers. Scoring is scaled and BPELSG does not publish a fixed cutoff percentage. Most candidates report needing roughly 60-70% raw correct to pass.

How much does the California Seismic Principles exam cost in 2026?

The BPELSG state-specific examination fee is $125 per the 2026 BPELSG fee schedule (16 CCR §407). This is in addition to the NCEES PE Civil fee ($400) and the Engineering Surveying state exam fee ($125). Retake candidates pay $125 again for each attempt.

Which code editions does the BPELSG Seismic Principles exam reference?

The exam is currently keyed to the 2022 California Building Code (2021 IBC base) and ASCE/SEI 7-16 with selected ASCE 7-22 updates. ACI 318, AISC 341/360, and TMS 402 cover detailing for concrete, steel, and masonry. BPELSG candidate bulletins specify the exact code editions in effect for each administration window.

What are the most heavily weighted content areas?

Seismic Forces on Building Structures (26%) and Seismic Analysis Procedures (26%) together account for 52% of the exam. Non-Building/Component Forces (14%) and Detailing/QC (12%) come next. Allocate the majority of study time to ELF base shear, drift, diaphragm forces, rigidity-based distribution, and capacity-design detailing.

Is the California Seismic Principles exam open-book?

Per current BPELSG bulletins, the exam at Pearson VUE is closed-book. Candidates may not bring personal references into the test room. Any allowed digital references are presented on screen as specified by the candidate information bulletin in effect for the testing window. Always verify the latest BPELSG rules before exam day.