Independent forensic investigation of fire damage — structural assessment, material degradation, repairability analysis, and causation.
Fire damage forensic investigation assesses structural integrity after fire, evaluates material degradation (steel, concrete, wood), determines repairability, and quantifies damage scope. PE-stamped reports support insurance claims, litigation, and repair planning for commercial and industrial properties.
Structural Steel Degradation
High temperatures reduce steel yield strength and modulus — steel above 1000°F may lose 50%+ of its capacity, causing permanent deformation and requiring engineering evaluation.
Concrete Spalling
Trapped moisture in concrete expands rapidly during fire, causing explosive spalling that exposes reinforcement and reduces section area.
Wood Charring
Wood chars at a predictable rate (~1.5 inches/hour) — the char layer insulates the core, but remaining sound wood must be evaluated for adequate capacity.
Connection Failure
Heat-induced expansion, warping, and strength reduction in bolts, welds, and connectors can compromise structural connections.
Thermal Expansion Damage
Differential thermal expansion pushes walls, fractures connections, and distorts framing — damage that may not be immediately apparent.
Smoke & Chemical Damage
Acidic smoke residues and fire-suppression chemicals can cause ongoing corrosion and deterioration if not properly remediated.
Water Damage from Suppression
Firefighting water and suppression systems cause additional water damage — compounding the structural assessment requirements.
Site safety assessment — evaluating structural stability before allowing access for investigation.
Comprehensive photographic documentation of fire damage, including char patterns, structural distortion, and material conditions.
Damage severity mapping — classifying areas by fire exposure level (severe, moderate, light, smoke-only).
Structural steel evaluation — measuring distortion, checking for permanent deformation, and assessing remaining capacity.
Concrete assessment — evaluating spalling depth, reinforcement exposure, and compressive strength of fire-exposed concrete.
Wood member assessment — measuring char depth, calculating remaining sound section, and evaluating structural capacity.
Connection inspection — evaluating bolts, welds, and connectors for heat damage, distortion, and integrity.
PE-stamped report with damage assessment, repairability, and repair or replacement recommendations.
Char Patterns
Wood char depth, concrete spalling patterns, and steel distortion levels reveal the fire temperature and duration at each location — the damage map tells the fire story.
Steel Distortion
Permanent deflection, twisting, or sagging in structural steel indicates temperatures exceeded yield reduction thresholds — requiring capacity evaluation.
Concrete Spalling
Surface loss and exposed reinforcement indicate high-temperature exposure — the depth and extent determine whether repair or replacement is needed.
Connection Damage
Warped, fractured, or heat-damaged connections compromise the load path — connection evaluation is critical to structural assessment.
Smoke Patterns
Smoke deposition patterns reveal fire progression, ventilation paths, and areas of concealed damage — guiding the investigation scope.
✗ If steel looks OK after a fire, it's fine.
✓ Steel can lose significant strength at high temperatures without visible distortion. Engineering evaluation with capacity calculations — not visual assessment — determines whether steel members remain serviceable.
✗ Fire-damaged wood must always be replaced.
✓ Wood chars at a predictable rate, and the remaining sound section may have adequate capacity. Engineering analysis of char depth and remaining section determines whether members can remain, be sistered, or require replacement.
✗ Fire damage is limited to burned areas.
✓ Thermal expansion, smoke, water, and chemical damage extend well beyond the burn area. A comprehensive investigation assesses the full scope of structural and non-structural damage.
PE-stamped forensic report with fire damage assessment and repairability
Structural capacity evaluation of fire-exposed members
Damage severity mapping by area
Material evaluation — steel, concrete, wood
Connection assessment
Repair vs. replacement recommendations
Scope of structural and non-structural damage
Fire damage assessment determines whether a structure can be repaired or must be demolished — a decision worth millions for commercial properties. An independent engineering investigation provides the documentation needed for insurance claims, business interruption analysis, and repair planning. PE-stamped reports carry authority that contractors' estimates cannot.
Fire damage cases involve insurance coverage disputes, subrogation against responsible parties, and construction defect claims if fire resistance was inadequate. Key considerations: quantifying structural damage, determining repairability, and assessing whether code-required fire protection was properly designed and installed. Dr. Mousavi's reports provide the engineering analysis.
Fire damage is typically a covered peril. The engineering challenge is accurately quantifying the structural damage scope — including concealed damage that may not be visible. Our PE-stamped reports provide comprehensive damage assessment that supports fair claim settlement and prevents disputes from undervalued or overlooked damage.
Independent engineering answers about fire damage
Through visual inspection for distortion, measurement of permanent deflection, evaluation of connection integrity, and structural capacity calculations accounting for temperature-induced strength reduction. Members that look undamaged may still have reduced capacity.
Depending on spalling depth and reinforcement exposure, concrete can often be repaired with patching, reinforcement, or section restoration. Severe damage may require member replacement. Engineering evaluation determines the appropriate approach.
Through structural stability assessment evaluating remaining capacity of fire-exposed members, connection integrity, and overall structural system performance. The PE-stamped assessment determines whether the building is safe for occupancy, investigation, or requires shoring.
Discuss your commercial, industrial, insurance, or litigation-related engineering matter with an independent forensic engineer. All consultations are confidential.