Forensic Engineering: Building Collapses, Geotechnical Failures, Fire Origin, and Explosions
Published:
Questions
30
Duration
30 min
Faculty-reviewed
0
Updated
18 Jun 2026
About this mock
This mock test examines the forensic engineering analysis of catastrophic structural failures, geotechnical collapse mechanisms, fire origin science, electrical fire causation, and explosion dynamics. It draws on landmark investigations including Ronan Point (1968), L'Ambiance Plaza (1987), Rana Plaza (2013), and Surfside Champlain Towers South (2021), and on the physical principles underlying bearing capacity loss, liquefaction, heat release rate, primary arc versus secondary melting, and BLEVE mechanics. Relevant codes and standards include BS EN 1991-1-7, NFPA 921, ASTM E1355, ASME BPVC, and UFC 3-340-02.
Designed for MSc and BSc students, licensed forensic engineers, and practitioners preparing for technical assessments, this mock demands precise differentiation between closely related failure modes, investigation methodologies, and evidential standards. Questions probe geotechnical limit-equilibrium analysis, flashover HRR calculations using the Babrauskas-Peacock and t-squared growth models, Kingery-Bulmash blast scaling, and the morphological distinction between primary arc beads and secondary fire melting.
Topics covered:
- Building collapse case studies: Ronan Point, L'Ambiance Plaza, Rana Plaza, Surfside Champlain Towers South
- Geotechnical and foundation failure: bearing capacity, piping, liquefaction, differential settlement, slope instability
- Fire origin engineering: heat release rate, flashover thresholds, NFPA 921 origin indicators, t-squared growth
- Electrical fire failure analysis: arc bead morphology, primary versus secondary melting, arc mapping, breaker failure
- Explosion and pressure-vessel failure: BLEVE mechanics, ductile fracture, Mach stem formation, TNT equivalence, dust explosions
Allow 30 minutes.
Sources & references
Questions in this mock are written and verified against the following sources. Citations are recorded per question and shown in the explanation after submission.
- cited in 4 questions
NFPA — NFPA 921: Guide for Fire and Explosion Investigations, 2021 Edition
Chapter 6: Fire Patterns, Section 6.3.5 Area of Origin Determination
- cited in 1 question
NIST — Technical Investigation of the June 24 2021 Champlain Towers South Partial Building Collapse
NIST SP 1000-1, Interim Technical Report, 2024, Section 3
- cited in 1 question
Babrauskas, Vytenis — Ignition Handbook, 1st Edition
Chapter 14: Electrical Causes of Fire, Arc Bead Morphology and Arc Mapping
- cited in 1 question
National Bureau of Standards — Investigation of Construction Failure of L'Ambiance Plaza
NBSIR 87-3640, US Department of Commerce, 1987, Chapter 3
- cited in 1 question
Skempton, A.W. and MacDonald, D.H. — The Allowable Settlements of Buildings, Proceedings of the Institution of Civil Engineers
Vol. 5, Part III, 1956, pp. 727-768
- cited in 1 question
Kingery, C.N. and Bulmash, G. — Airblast Parameters from TNT Spherical Air Burst and Hemispherical Surface Burst
ARBRL-TR-02555, US Army Ballistic Research Laboratory, 1984
- cited in 1 question
Skempton, A.W. — Long-term Stability of Clay Slopes, Geotechnique
Vol. 14, No. 2, 1964, pp. 77-102
- cited in 1 question
van den Berg, A.C. — The Multi-Energy Method: A Framework for Vapour Cloud Explosion Blast Prediction
Journal of Hazardous Materials, Vol. 12, 1985, pp. 1-10
- cited in 1 question
Baker, W.E. et al. — Explosion Hazards and Evaluation
Chapter 4: Blast Scaling and Reflection, Mach Stem Formation, Elsevier, 1983
- cited in 1 question
NFPA — NFPA 654: Standard for the Prevention of Fire and Dust Explosions, 2020 Edition
Annex A: Explanatory Material on Dust Explosion Two-Stage Mechanisms
- cited in 1 question
AIChE Center for Chemical Process Safety — Guidelines for Chemical Process Quantitative Risk Analysis, 2nd Edition
Chapter 2: Consequence Analysis, BLEVE Mechanics and Thermal Weakening
- cited in 1 question
ASME — Boiler and Pressure Vessel Code, Section VIII Division 1
UG-27: Thickness of Shells under Internal Pressure, 2021 Edition
- cited in 1 question
Babrauskas, Vytenis — Arc Fault and Electrical Fire Investigation, SFPE Handbook Reference
Chapter 7: DC Arcing in Photovoltaic Systems
- cited in 1 question
Lees, Frank P. — Loss Prevention in the Process Industries, 4th Edition
Chapter 17: Explosion, BLEVE versus Vapour Cloud Explosion Classification
- cited in 1 question
ASTM International — ASTM E1355: Standard Guide for Evaluating Predictive Capability of Deterministic Fire Models
Section 5: Limitations and Documentation Requirements
- cited in 1 question
Das, Braja M. — Principles of Foundation Engineering, 9th Edition
Chapter 11: Lateral Earth Pressure and Retaining Structures
- cited in 1 question
Institution of Structural Engineers — Structural Aspects of the Rana Plaza Building Collapse
IStructE Fact-Finding Mission Report, London, 2013
- cited in 1 question
Seed, H.B. and Idriss, I.M. — Simplified Procedure for Evaluating Soil Liquefaction Potential, ASCE Journal of Soil Mechanics
Vol. 97, No. SM9, 1971, pp. 1249-1273
- cited in 1 question
Foster, M., Fell, R. and Spannagle, M. — Statistics of Embankment Dam Failures, Canadian Geotechnical Journal
Vol. 37, No. 5, 2000, pp. 1000-1024
- cited in 1 question
Babrauskas, V. and Peacock, R.D. — Heat Release Rate: The Single Most Important Variable in Fire Hazard, Fire Safety Journal
Vol. 18, Issue 3, 1992, pp. 255-272
- cited in 1 question
Das, Braja M. — Principles of Geotechnical Engineering, 9th Edition
Chapter 15: Slope Stability, Infinite Slope Analysis
- cited in 1 question
ASM International — ASM Handbook Volume 11: Failure Analysis and Prevention
Chapter 12: Ductile and Brittle Fractures
- cited in 1 question
DiNenno, P.J. (ed.) — SFPE Handbook of Fire Protection Engineering, 5th Edition
Chapter 3.1: Estimating Temperatures in Compartment Fires, t-squared Growth Model
- cited in 1 question
Drysdale, Dougal — An Introduction to Fire Dynamics, 3rd Edition
Chapter 10: Fully Developed Fires and Post-Flashover Compartment Temperatures
- cited in 1 question
Pearson, C. and Delatte, N. — Ronan Point Apartment Tower Collapse and its Effect on Building Codes, Journal of Performance of Constructed Facilities
Vol. 19, No. 2, 2005, pp. 172-177
- cited in 1 question
BSI — BS EN 1991-1-7:2006 Eurocode 1: Actions on Structures, Part 1-7: Accidental Actions
Section 5 and UK National Annex: Design for consequences of localised failure
- cited in 1 question
Florida Legislature — HB 1021: Building Safety
Florida Statutes Section 553.899, enacted May 2022
How our mocks are built
Questions are written and edited by the ForensicSpot team and cited from peer-reviewed forensic textbooks, official syllabi and primary case law. Each one is verified before publishing. Detailed explanations show after you submit, so the test stays a real test. See a mistake? Tell us.
Common questions
What does the Forensic Engineering: Building Collapses, Geotechnical Failures, Fire Origin, and Explosions mock cover?+
This mock test examines the forensic engineering analysis of catastrophic structural failures, geotechnical collapse mechanisms, fire origin science, electrical fire causation, and explosion dynamics. It draws on landmark investigations including Ronan Point (1968), L'Ambiance Plaza (1987), Rana Plaza (2013), and Surfside Champlain Towers South (2021), and on the physical principles underlying bearing capacity loss, liquefaction, heat release rate, primary arc versus secondary melting, and BLEVE
How many questions and how long is the test?+
30 multiple-choice questions, 30 minutes total. Difficulty: hard. Tier: Premium.
Who is this mock for?+
Forensic science students and aspirants who want timed, exam-style practice with explanations and verified source citations on Forensic Engineering. Useful for postgraduate entrance preparation and for BSc / MSc forensic students testing their recall under time.
Are the questions reviewed?+
Each question carries a verified source citation. Faculty review for individual questions is in progress.
Do I need an account to take this mock?+
Yes, a free ForensicSpot account is required to start a timed attempt — this lets you save progress, see per-question explanations after submission, and track your topic-level performance over time.