Beams & Flexural / Shear Forensics
2 GuidesReinforced Concrete Beam Shear Failure: Mechanics & ACI 318-19 Repair Protocol
Forensic diagnosis of 45-degree diagonal tension shear cracks in RC beams. Explores Mohr's circle shear stress trajectories, aggregate interlock loss, dowel action, UPV verification, and structural epoxy injection plus CFRP U-wraps.
Carbon Fiber Reinforced Polymer (CFRP) Strengthening: ACI 440.2R Engineering Guide
Engineering design calculations and installation protocols for wet layup CFRP systems: flexural soffit laminates, debonding strain limits (εfd), shear U-wraps, column confinement (Δf'cc), and direct tensile pull-off testing.
Slabs & Prestressed Concrete Systems
2 GuidesTwo-Way Punching Shear Failure in Flat Plate Slabs: ACI 318 Analysis & Retrofit
Mechanics of truncated 45-degree cone punching failure around columns. Covers critical shear perimeter bo at d/2, eccentric unbalanced moment transfer (γv Msc), post-installed through-slab shear studs, and progressive collapse integrity bars.
Post-Tensioned Concrete Slab Tendon Forensics: Rupture, Corrosion & Splicing
Forensic investigation protocol for unbonded monostrand tendons: hydrogen embrittlement, paper-wrapped tendon failures, GPR radar scanning, in-situ hydraulic lift-off testing, and PTI DC80.3 dog-bone pocket coupler splicing.
Cracking Mechanics & Pressure Injection
2 GuidesEpoxy vs Polyurethane Concrete Crack Injection: ASTM C881 vs EN 1504-5 Selection Guide
Comparative engineering analysis for structural bonding vs active water-stopping: viscosity criteria, mechanical bond strength, hydrophobic/hydrophilic resins, port spacing formulas, and high-pressure drilled packer techniques.
Tolerable Crack Width Limits in Concrete: ACI 224R vs Eurocode 2 Engineering Guide
Direct comparison between US and European crack width limits across exposure classes (dry interior, humid, deicing salts, water-retaining). Optical measurement methodologies and vibrating wire crackmeter monitoring protocols.
Durability, Rebar Corrosion & Service Life
2 GuidesRebar Corrosion Forensics, Half-Cell Potential & Cathodic Protection (ACI 222R)
Chloride attack and rust volumetric expansion mechanics (200%-600%). Half-cell potential equipotential contour surveys, ICRI 310.1R concrete breakout undercut (25 mm clear), and discrete sacrificial zinc galvanic anode specifications.
Concrete Carbonation Depth & Service Life Modeling: EN 14630 & Fickian Diffusion
Chemical kinetics of atmospheric CO2 neutralization and pore pH collapse below 9.0. Standardized phenolphthalein indicator spray protocol (EN 14630), Tuutti square-root service life modeling, and EN 1504-2 anti-carbonation coatings.
Foundations, Geotechnics & Metrology
2 GuidesFoundation Settlement Cracks: Skempton-MacDonald Limits & Underpinning Forensics
Geotechnical structural forensic guide to differential settlement: angular distortion (β = δ/L) limits, stepped diagonal masonry cracks, ZIPLEVEL floor elevation surveys, push piers, helical piles, and poly-jacking.
Non-Destructive Testing (NDT) of Concrete: UPV, Impact-Echo & GPR Forensics
The forensic engineer's guide to in-situ assessment: Ultrasonic Pulse Velocity wave transmission, Impact-Echo resonant frequency delamination analysis, 2.6 GHz GPR radar scanning, and combined SonReb compressive strength calibration.
Need an Instant Field Calculation for an Active Defect?
Open the StructForensic Pro Diagnostic Engine to input your real-world crack dimensions, structural member types, environment exposures, and get instant code verification with auto-generated stamped PDF reports.