Case Studies

Plaintiff counsel representing a homeowners association retained Dr. Mitchell in a construction defect action against the general contractor and framing subcontractor. A 32-unit condominium complex constructed in 2017 had developed extensive water intrusion affecting 18 of 32 units. The developer denied liability, arguing the damage was caused by improper owner maintenance. The causation question was complex: three different defect types were present simultaneously, making it difficult to attribute damage to any single party.

Dr. Mitchell conducted a systematic forensic investigation across all 18 affected units over three site visits. He reviewed the original construction drawings, approved submittals, and the architect's specifications against as-built conditions documented through invasive inspection. His analysis identified three distinct defect categories: improper window-to-wall flashing at 64 window openings, missing vapor barriers in the exterior wall assembly on the north-facing elevation, and undersized roof drainage scuppers designed 40% below the capacity required by the applicable CBC edition. He prepared a 120-page expert report with 300+ photographs and engineering calculations supporting each opinion.

Dr. Mitchell's report enabled plaintiff counsel to clearly separate liability among three parties: the general contractor (roof drainage), the window subcontractor (flashing), and the architect (vapor barrier specification). The case settled at mediation for $3.8M — 90% of claimed damages — before trial. Plaintiff counsel noted that the specificity and organization of Dr. Mitchell's report made the settlement achievable without going to trial.

Defense counsel for an engineering firm retained Dr. Mitchell after a partial collapse of a post-tensioned concrete parking structure at a mixed-use development. The plaintiff alleged that the structural design was deficient and sought $6.1M in damages. The engineering firm's original design had passed permit review, and the structure had performed without incident for four years before the collapse. Defense counsel needed an independent expert to evaluate whether the design was the true cause of failure or whether another factor was responsible.

Dr. Mitchell conducted emergency site documentation before the failed section was demolished, preserving critical physical evidence with photogrammetric documentation. His structural analysis confirmed the original design met all applicable code requirements and had adequate capacity under the design loads. Investigation of the failure zone revealed unauthorized modifications to structural support columns made by a tenant contractor during a buildout — modifications that had been made without permit, engineering review, or notification to the building owner. Dr. Mitchell's analysis quantified the load redistribution caused by the modifications and demonstrated that they directly caused the collapse.

The engineering firm defendant was dismissed from the action on summary judgment based on Dr. Mitchell's analysis. The plaintiff then pursued the tenant contractor responsible for the unauthorized modifications. Dr. Mitchell was re-retained as a neutral to assist the court in assessing damages for the reconstituted action. The engineering firm paid nothing in settlement.

A group of homeowners in a 45-lot hillside subdivision retained plaintiff counsel after experiencing progressive foundation settlement in their homes, with differential settlement of up to 2.5 inches causing interior and exterior cracking, sticking doors, and visible structural distress. The developer and geotechnical engineer both denied liability. The central dispute: whether the foundation design was adequate given the site soil conditions, or whether the geotechnical report provided incomplete information that led to an underdesigned foundation system.

Working alongside a geotechnical expert retained by the same counsel, Dr. Mitchell evaluated the structural foundation design against the geotechnical recommendations provided. His analysis showed that while the foundation engineer had followed the geotechnical report, the report itself had understated the compressibility of the fill soils placed during site grading. He documented the structural damage across 22 affected homes, quantified the remediation scope, and prepared an expert report addressing the standard of care for both the geotechnical engineer and the foundation engineer — identifying the geotechnical engineer as the primary responsible party.

Following Dr. Mitchell's deposition, the geotechnical engineer's insurer initiated settlement discussions. The case resolved for $2.1M covering full remediation of all 22 affected homes plus consequential damages. The foundation engineer was absolved based on Dr. Mitchell's opinion that their design appropriately relied on the geotechnical report.

Following the collapse of a mezzanine-level steel storage platform at a warehouse facility, two workers sustained serious injuries and the facility owner's insurer pursued subrogation against the steel fabricator and erector. The fabricator claimed the connections were built to the engineer's specifications; the engineer's drawings showed connection details that, on their face, appeared adequate. Determining whether the failure was a fabrication error, design deficiency, or load exceedance required detailed metallurgical and structural analysis of the recovered steel members.

Dr. Mitchell directed testing of recovered steel connection components at a certified materials laboratory, including weld quality analysis, steel chemistry testing, and fracture surface examination. His structural analysis quantified the actual load capacity of the connections as fabricated versus what the design required. He found weld defects — incomplete penetration and porosity — at six of the eight primary beam-to-column connections, reducing the actual connection capacity to approximately 55% of the design requirement. He also found that the steel material did not conform to the ASTM A36 specification called for in the design documents.

Dr. Mitchell's material testing results and connection capacity analysis supported clear attribution of liability to the fabricator. The subrogation claim resolved for $1.85M from the fabricator and its insurer. Dr. Mitchell testified at a liability hearing to address the fabricator's contention that the design was the contributing cause — testimony that the hearing officer found persuasive in rejecting the comparative fault argument.