How 3D Models Improve Construction Quality Lessons from the Todd Cancer Institute Pavilion Project

The use of three-dimensional building information modeling has transformed how construction teams approach quality assurance on complex medical facility projects. When McCarthy Building Companies undertook the $31 million MemorialCare Todd Cancer Institute Pavilion at Long Beach Memorial in California, the firm deployed Autodesk Navisworks 2012 and Revit 2012 to create detailed 3D representations of existing facility elements for construction coordination. These digital tools, combined with traditional quality methods such as electronic plan rooms and in-place mock-ups, allowed the team to maintain strict quality standards while building above an active hospital loading dock, data center, and laboratory that operated 24 hours a day, seven days a week. Implementing 3D model-based quality workflows is a proven strategy for reducing field conflicts and ensuring project deliverables meet specifications, complementing broader Construction Quality Control Inspection Processes Testing Standards and programs that govern modern building projects.

The Role of 3D Models in Construction Quality Management

Three-dimensional modeling has moved beyond simple visualization to become a core quality management tool on complex building projects. On the Todd Cancer Institute Pavilion project, McCarthy used Navisworks 2012 and Revit 2012 to generate accurate 3D representations of structural elements, mechanical systems, and architectural features within the existing four-story administration building that would house the new 65,000-square-foot cancer treatment center. This digital approach gave the project team the ability to detect clashes and conflicts before any physical work began on site.

How Digital Models Eliminate Field Conflicts

The primary quality benefit of 3D modeling on the Todd Cancer Institute project was conflict elimination. By layering structural, mechanical, electrical, and plumbing models into a single coordinated environment, the team could identify interferences between building systems that would have been invisible in traditional two-dimensional drawings. McCarthy Project Manager Ileana Holguin stated that the 3D models helped eliminate field conflicts and aided directly in the quality of construction. The advantages of this approach include:

• Detection of spatial conflicts between ductwork, piping, and structural steel before installation
• Identification of clearance issues around medical equipment and treatment room fixtures
• Coordination of MEP systems with the stringent requirements of an active healthcare environment
• Visual verification that design intent matches the as-built conditions of the existing building
• Reduction of costly rework caused by uncoordinated trades working from separate drawings

Each of these benefits contributes directly to higher Essential Insights On Quality in Construction Industry Objectives by catching errors during the planning phase rather than after materials have been ordered or installed.

Coordination in Constrained Environments

The Todd Cancer Institute Pavilion presented a unique coordination challenge because the new facility was being built within and above an existing operational building. The construction zone sat directly over a loading dock, the hospital main data center, and a laboratory that serviced the entire campus around the clock. This meant that any quality failure, such as water intrusion during concrete work or debris falling into sensitive areas, could have catastrophic consequences for hospital operations. The 3D modeling process allowed the team to plan sequencing and containment strategies with a level of precision that would not have been achievable with paper drawings alone.

Quality Assurance Methods Beyond 3D Modeling

While 3D models formed the technological backbone of the quality program on the Todd Cancer Institute Pavilion, McCarthy supplemented digital tools with proven field-based quality assurance methods. The combination of virtual and physical quality checks created a comprehensive system that addressed quality from every angle.

Electronic Plan Rooms for Document Control

An electronic plan room functioned as the central repository for all project drawings, specifications, and quality documentation. Instead of relying on printed sets that could become outdated as revisions were issued, every member of the project team accessed the same digital documents in real time. This eliminated the common quality problem of crews working from obsolete drawings. The electronic plan room ensured that:

• All subcontractors accessed the most current drawing revisions simultaneously
• Request for information responses were linked directly to affected drawings
• Quality inspection checklists were referenced against current specifications
• Document version history was maintained for compliance and audit purposes
• Field changes were tracked and communicated to all stakeholders immediately

In-Place Mock-Ups for Critical Areas

For portions of the project requiring special attention, McCarthy constructed in-place mock-ups before proceeding with full-scale work. These physical samples allowed the team to verify that finishes, tolerances, and detailing met the specified quality standards before committing to large-scale installation. The infusion rooms and restrooms, which had specific Americans with Disabilities Act requirements and detailed finishes, were identified as areas that particularly benefited from mock-up construction. The mock-up process followed a structured sequence:

1. Identify areas with complex detailing, special finishes, or regulatory requirements
2. Construct a representative sample of the work in its actual location
3. Inspect the mock-up against specifications with the design team and owner
4. Document approved standards with photographs and written sign-off
5. Use the approved mock-up as the visual and dimensional benchmark for all subsequent work

This approach aligns with the principles outlined in Construction Quality Management Iso 9001 Total Quality Management frameworks, where process verification before full execution is a cornerstone of quality assurance.

Quality Challenges and Mitigation Strategies on Medical Facility Construction

Medical facility construction projects present quality challenges that are distinct from commercial or residential building projects. The Todd Cancer Institute Pavilion project required the team to maintain hospital-grade infection control, protect sensitive electronic systems, and ensure uninterrupted patient care throughout construction. These constraints demanded a quality approach that went beyond standard construction best practices.

Infection Control in Active Healthcare Environments

McCarthy developed a comprehensive infection control plan specifically for the laboratory space that operated continuously beneath the construction zone. The quality protocols for infection control included:

• Negative pressure containment barriers to prevent dust migration into clinical areas
• HEPA-filtered ventilation within construction zones to capture airborne particulates
• Strict material staging protocols to prevent contamination of clean pathways
• Daily inspections of containment systems by designated infection control personnel
• Dedicated construction entrance and exit points separate from patient and staff routes

Protecting Sensitive Hospital Infrastructure

The main data center located directly beneath the construction area required special quality provisions. Any water leak, dust intrusion, or vibration event could disrupt hospital information systems that supported patient care across the entire campus. The quality mitigation measures implemented for the data center and other sensitive areas are summarized in the table below.

These layered quality protections ensured that hospital operations continued without interruption throughout the demolition and construction phases, a requirement that was non-negotiable for this project. Understanding these site-specific factors is essential for Quality in Construction Industry Objectives Factors Affecting Quality in healthcare projects.

Implementing a 3D Model-Based Quality Program on Your Projects

The success of the Todd Cancer Institute Pavilion project demonstrates that a quality program built on 3D modeling, electronic document control, and physical mock-ups can deliver exceptional results even under the most challenging conditions. Construction teams that want to adopt similar approaches should consider the following implementation steps.

Selecting the Right Software and Workflow

McCarthy chose Autodesk Navisworks 2012 for clash detection and coordination review, paired with Revit 2012 for detailed building information modeling. The combination of these two platforms allowed the team to import models from multiple design disciplines, run automated clash detection algorithms, and review conflicts in a shared digital environment. Key considerations when selecting 3D modeling software for quality purposes include:

• Compatibility with the file formats used by the design team and subcontractors
• Ability to perform automated clash detection across all building systems
• Integration with project management and document control platforms
• Support for mobile and tablet viewing so field crews can access models on site
• Training requirements for project team members at all experience levels

Establishing Quality Benchmarks Before Construction Begins

The Todd Cancer Institute project established quality benchmarks during the preconstruction phase, well before any material was ordered or any crew mobilized to the site. The 3D models served as the primary reference for these benchmarks, providing a digital standard against which all installed work could be compared. The preconstruction quality benchmarking process should include:

1. Complete model coordination review with all trades before issuing permits for construction
2. Identification of high-risk areas requiring mock-up verification before full installation
3. Development of digital inspection checkpoints tied to specific model elements
4. Establishment of tolerance standards and acceptable deviation ranges for each building system
5. Creation of a quality communication protocol linking field observations to model updates

Integrating Field Quality Checks with Digital Models

The most effective quality programs connect field inspection data directly back to the digital model. When field crews identify a deviation during installation, that information should be captured and compared against the model to determine whether the deviation is acceptable or requires corrective action. On the Todd Cancer Institute project, the electronic plan room served as the bridge between the digital model and the physical installation, ensuring that quality data flowed in both directions. This integration creates a continuous feedback loop where the model informs field work and field results improve future model accuracy.

The project team transformed 65,000 square feet of existing office space into a dedicated cancer treatment center while maintaining uninterrupted hospital operations. The 3D modeling approach, combined with electronic plan rooms and in-place mock-ups, allowed McCarthy to deliver the project with the quality standards required for a nationally recognized cancer institute. The lessons from this project apply to any construction project where quality, coordination, and operational continuity are critical success factors.