Multi-Floor Commercial TI: 259 Issues Across 6 Disciplines
AI-powered plan review of a three-floor commercial tenant improvement uncovered 259 issues—including 35 critical findings related to fire protection conflicts, seismic bracing prohibitions, and accessibility violations—before permit submission.
Issues by Discipline
Critical Findings
Fire-Rated Wall Infill Conflicts
General note specifies single-layer gypsum for all infills, but legend shows 2-hour fire-resistive walls requiring double layers. Single layer only provides 1-hour rating.
Egress Hardware Incompatibility
Hardware set specifies mortise lock on door with existing rim panic device. These are mechanically incompatible—requiring two motions to exit instead of one.
Seismic Bracing Prohibition in High Seismic Zone
Note prohibits diagonal bracing for soffits in feature ceiling areas, but project is in Seismic Zone D/E/F where bracing is required.
Non-Existent Anchor Product Specified
Detail calls for 1/4" Hilti Kwik Bolt TZ, but this product doesn't exist in 1/4" diameter—minimum available is 3/8".
Accessible Turning Space Obstructed
Required 60" wheelchair turning diameter overlaps the water closet fixture, making the turning maneuver physically impossible.
Expired Building Code Referenced
Drawings reference 2019 CBC for seismic parameters, which has been superseded by 2022 CBC with significant methodological changes.
What We Reviewed
Drawing Set
- Architectural floor plans (3 floors)
- Reflected ceiling plans
- Interior elevations & restroom details
- Door schedule & hardware sets
- Partition types & framing details
- Finish plans & specifications
Code References
- 2022 California Building Code
- 2024 International Building Code
- CBC Chapter 11B (Accessibility)
- CBC Chapter 7 (Fire Protection)
- ICC-ES ESR-4266 (Anchor Systems)
- Structural loads (Seismic Design)
Key Takeaways
Fire Protection Gaps
27 fire protection issues including fire-rated assembly conflicts, missing firestop specs, and non-rated glazing in 90-minute doors.
Structural Conflicts
47 structural issues including seismic bracing prohibitions, undersized studs, and invalid anchor specifications.
Accessibility Violations
Multiple CBC 11B violations including obstructed turning spaces, excessive reach ranges, and missing knee clearances.
Disclaimer: This case study represents real findings from an AI-assisted plan review. All customer-identifying information has been removed. Issue counts and categories reflect the actual project scope.